audison thesis quattro

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Audison Thesis TH Quattro 4-Channel 1400 Watts RMS Class A TH Series Amplifier

• SKU #: 01083

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Special Price $4,899.99

Retail: $5,390.99

Availability: Available

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• Description

FOUR CHANNEL POWER AMPLIFIER

Thesis amplifiers are born with the know-how and experience achieved with the HV venti, improved by the innovation of digital technology. The result is a perfect combination between the highest level of analog technology and the advanced features of the digital technology in one unique product.  The precious synergy with Full DA HD technology takes the in-car listening experience to a new level of excellence; the synthesis of a unique know-how employed in mobile audio reproduction.

TH quattro  is a four-channel amplifier fully adjustable and entirely manageable by the internal microprocessor, for limitless system configurations.

Specifications:

• Nominal power (RMS) @ 12 VDC, 1% THD:
• Dual Power Mode - Hi-Current:
•  4 Ch @ 4 Ω 115 W x 4
• Dual Power Mode - A Class:
•  4 Ch @ 4 Ω 40 W x 4
• Output power (RMS) @ 14.4 VDC, 1% THD
•  4 Ch @ 4 Ω 160 W x 4
•  4 Ch @ 2 Ω 260 W x 4
•  4 Ch @ 1 Ω 340 W x 4
•  3 Ch @ 4 Ω 150 W x 2 + 540 W x 1
•  3 Ch @ 2 Ω 250 W x 2 + 650 W x 1
•  2 Ch @ 4 Ω 500 W x 2
•  2 Ch @ 2 Ω 700 W x 2
•  4 Ch @ 4 Ω 55 W x 4
• Voltage: 11 ÷ 15 VDC
• Idling current (@ Dual Power Setting): 2.6 ÷ 8.9 A
• Idling current when off: 0.04 mA
• Consumption @ 14.4 VDC, 1 Ω,
• Max Musical Power: 105 A
• Remote In: 7 ÷ 15 VDC (1 mA)
• Remote Out: 12 VDC (20 mA)
• Fuse (AFS): 100 A
• Distortion -THD@1kHz,4Ω;90%Power: 0.03 %
• Bandwidth @ -3 dB, 2 VRMS, 4 Ω: 5 ÷ 70k Hz
• S/Nratio@Aweighted,1V,MaxPower: 104 dBA
• Damping factor @ 1 kHz, 2 VRMS, 4 Ω: 80
• Pre-In sensitivity: 0.3 ÷ 4.8 VRMS
• Pre-In impedance: 15 kΩ
• Load impedance (Min@DualPowerMode- Hi-Current):
• • 4 Ch 1 Ω
• • 2 Ch 2 Ω
• Output power @ 4 Ω, 1% THD+N:
• 14.4 V: 150 W x 4 Ch
• SN ratio (ref. 1 W output): 80 dBA
• Max size (mm/inches): 259 x 510 x 67 / 10”1/4 x 20”1/8 x 2”11/16

According to the definition of HiRes audio provided by JAS (Japan Audio Society - jas-audio.or.jp), HV venti far exceed the above 40 kHz bandwith analog requirement, providing an astonishing 5 ÷ 75k Hz (@ -3 dB, 2 VRMS, 4 Ω).

Pure digital signal transfer with a resolution up to 24 bit / 96 kHz

Innovation is at the heart of the state-of-the-art digital decoding section. The S/PDIF optical input allows direct connection to digital sources with the ability to re-launch the digital signal to other Thesis amplifiers through the AD Link (Audison DigitalLink) system. Each amplifier features 192 kHz/24 bit PCM D/A conversion through a very high quality converter.

Provides the selection of four possible presets: Energy Saving, Hi-Current, Hi-AB Class and full A Class operation.

Inherited from the HV venti and making the most of TH’s extreme versatility, the complete crossover circuit of the TH amplifier is removable; a high-end sound quality solution.

Four Synchro-PWM power supplies allow for a very fast transient current response and to create a Dual Mono configuration.

Additional Information

“As described, Great Deal. Would buy from again. Thank You! A+++”

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Audison TH Quattro Thesis Four Channel Amplifier

Thesis amplifiers are born with the know-how and experience achieved with the HV venti, improved by the innovation of digital technology. The result is a perfect combination between the highest level of analog technology and the advanced features of the digital technology in one unique product. The precious synergy with Full DA HD technology takes the in-car listening experience to a new level of excellence; the synthesis of a unique know-how employed in mobile audio reproduction. TH quattro is a four-channel amplifier fully adjustable and entirely manageable by the internal microprocessor, for limitless system configurations.

Features Hi-Res audio According to the definition of HiRes audio provided by JAS (Japan Audio Society - jas-audio.or.jp), HV venti far exceed the above 40 kHz bandwith analog requirement, providing an astonishing 5 75k Hz (@ -3 dB, 2 VRMS, 4 ). FULL DA HD Pure digital signal transfer with a resolution up to 24 bit / 96 kHz DIGITAL INPUTS AND OUTPUTS Innovation is at the heart of the state-of-the-art digital decoding section. The S/PDIF optical input allows direct connection to digital sources with the ability to re-launch the digital signal to other Thesis amplifiers through the AD Link (Audison DigitalLink) system. Each amplifier features 192 kHz/24 bit PCM D/A conversion through a very high quality converter. BIAS CONTROL Provides the selection of four possible presets: Energy Saving, Hi-Current, Hi-AB Class and full A Class operation. REMOVABLE CROSSOVER Inherited from the HV venti and making the most of TH s extreme versatility, the complete crossover circuit of the TH amplifier is removable; a high-end sound quality solution. DUAL MONO CONSTRUCTION Four Synchro-PWM power supplies allow for a very fast transient current response and to create a Dual Mono configuration.

Power Output Dual Power Hi-Current Load Imp. Stereo 4 Ohm 160 W x 4 150 W x 2 + 540 W x 1 500 W x 2 2 Ohm 260 W x 4 250 W x 2 + 650 W x 1 700 W x 2 1 Ohm 340 W x 4 Dual Power A Class Load Imp. Stereo 4 Ohm 55 W x 4

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Audison Th Quattro Mono Amplifier

About this item

• Voltage: 11 ÷ 15 VDC
• Idling current (@ Dual Power Setting): 2.6 ÷ 8.9 A
• Idling current when off: 0.04 mA
• Consumption @ 14.4 VDC, 1 Ω, Max Musical Power: 105 A
• Remote In: 7 ÷ 15 VDC (1 mA)

Product details

• Is Discontinued By Manufacturer ‏ : ‎ No
• Product Dimensions ‏ : ‎ 11.81 x 11.81 x 11.81 inches; 22.71 Pounds
• Item model number ‏ : ‎ TH-QUATTRO
• Date First Available ‏ : ‎ February 23, 2015
• Manufacturer ‏ : ‎ Audison
• ASIN ‏ : ‎ B01M2BKPZ5

Product Description

TH quattro - 4 CHANNEL AMPLIFIER 4x260W Thesis amplifiers are born with the know-how and experience achieved with the HV venti, improved by the innovation of digital technology. The result is a perfect combination between the highest level of analog technology and the advanced features of the digital technology in one unique product. The precious synergy with Full DA HD technology takes the in-car listening experience to a new level of excellence; the synthesis of a unique know-how employed in mobile audio reproduction. TH quattro is a four-channel amplifier fully adjustable and entirely manageable by the internal microprocessor, for limitless system configurations. Features - Complementary differential circuitry with current mirror. Cascode A Class driver with inverted complementary triplet power stages. Integrated 24-bit / 192 kHz Hi-End DA converters. Compatibility with Audison Full DA HD technology and Hi-Res audio files listening certification. SPDIF and AD Link optical digital inputs that manage up to 8 digital channels on RJ-45 connector. Dual Mono Construction featuring four power supplies in Synchro-PWM configuration. Sensitivity control featuring 256 steps resistive switching for a resolution of 120 dB. Energy Saving, Hi-Current, Hi-AB Class, A Class presets selectable in real time.

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• Audison THESIS

Audison TH quattro

Audison's absolute Hi-End. Thesis is the link between audiophile engineers and audiophile enthusiasts, who simply look for the best. Technical perfection and peerless elegance make it unique.

Price: £3,499.99

Technical Specification

Detailed Specification

Audison TH quattro Manual

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Audison Thesis TH quattro

4-channel amplifier

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Advice from Carhifi experts

With the Thesis TH quattro, Audison presents a 4-channel amplifier that stands out for its advanced features and the combination of the highest levels of analog and digital technology. This amplifier with an output of 1040 W (4 x 260 W at 2 ohms) and A-class functionality is based on the know-how gained with the HV venti and is further enhanced by digital technology. The internal microprocessor enables extensive setting and management options, allowing unlimited system configurations. The Thesis TH quattro delivers optimum power, sound technology and elevates the in-car listening experience to a new level of excellence.

  TECHNICAL DATA

• Amplifier class A-Class
• Hi Level Input No
• Low Level Input Yes
• Digital input Yes
• Supply voltage / fuse 11 - 15 VDC
• No-load current when switched off 0.04 mA
• Power consumption @ 14.4 VDC, 2Ω, max. music power 105 A
• Remote OUT 12 VDC (20 mA)
• Remote IN 7 - 15 VDC (1 mA)

AMPLIFIER SECTION

• Distortion - THD @ 100 Hz, 4Ω, 70% rated power Distortion - THD @ 1 kHz, 4 Ω; 90% power: 0.03 %
• Bandwidth A (-3 dB, 2 VRMS, 4 Ω): 5 - 70k Hz
• S/N ratio A (A weighed @1 V): 104 dBA
• Attenuation factor A (1 kHz, 2 VRMS, 4 Ω): 80
• Input sensitivity Pre-In Pre-In sensitivity (two ranges): 0.3 - 4.8 VRMS
• Pre In Impedance 15 kΩ
• Total power RMS 1040 W
• Output power (RMS) @14.4 VDC, 1% THD
• 4 Ch @ 4 Ω 160 W x 4
• 4 Ch @ 2 Ω 260 W x 4
• 4 Ch @ 1 Ω 340 W x 4
• 3 Ch @ 4 Ω 150 W x 2 +540 w x 1
• 3 Ch @ 2 Ω 250 w x 2 + 650 w x 1
• 2 Ch @ 4 Ω 500 W x 2
• 2 Ch @ 2 Ω 700 W x 2
• Dual Power Mode - A Class: 4 Ch @ 4 Ω 55 W x 4
• Adjustable crossover No

CEA SPECIFICATIONS

• Output power @ 4Ω, 1% THD+N, 14.4 V Output power @ 4Ω, 1% THD+N, 14.4 V: 150 W x 4 Ch
• SN ratio (ref. 1W output) SN ratio (ref. 1W output): 80 dBA
• Input type PRE - S/PDIF (Max 192 kHz / 24 bit) Optical and AD Link
• Filters Outputs PRE Bypass / AD Link
• Filter passband A 2 x Removable kits: (Hi-pass / Lo-pass / Bandpass 12/24dB) 32 steps 18 - 7.5k Hz with 8 standard & 2 customizable modules
• Weight 10.3 kg

• Dimension A 510 mm
• Dimension B 478 mm
• Dimension C 259 mm
• Dimension D 160 mm
• Complementary differential circuit with current mirror.
• Class A cascode driver with inverted complementary triplet power stages.
• Integrated 24-bit / 192 kHz hi-end DA converter.
• Compatibility with Audison Full DA HD technology and Hi-Res Audio files with listening certificate.
• SPDIF and AD Link optical digital inputs, up to 8 digital channels on the RJ-45 connector.
• Dual-mono design with four power supply units in Synchro-PWM configuration.
• Sensitivity control with 256-step resistor circuit for a resolution of 120 dB.
• Energy saving, Hi-Current, Hi-AB class, A class presets selectable in in real time.
• Digital control via integrated setting panel, DRC and PC software. 
• High-quality crossover module included in the scope of delivery.
• The chassis is extruded from solid aluminum and manufactured using CNC machines.

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Frequently asked questions and answers, how long will it take until i receive my order.

The delivery time of each item is indicated on the product page near the price. For the sake of the environment, we send all items in an order together in one delivery. If items in an order have different delivery times, please use the longest delivery time as a guide. If individual items in your order are needed very urgently, write to our customer service team at [email protected] so that we can split your order. You can find all shipping conditions here.

Can the order also be shipped internationally?

We ship worldwide. There is no place in the world to which we cannot deliver. Shipping is either by DHL or UPS for international shipments. You can find all shipping conditions here .

What does shipping cost?

Shipping in Germany and the EU is free of charge from €50 value of goods, below that there is a €4.99 shipping fee. In the rest of Europe: For a gross order value of 0.00-499.99€: flat rate 49.99€ (incl. VAT) From a gross order value of 500,00€: flat rate 79,99€ (incl. VAT) Throughout the world: For a gross order value of €0.00-299.99: flat rate of €79.99 (incl. VAT) From a gross order value of 300,00€: flat rate 129,99€ (incl. VAT) All shipping conditions can be found here.

Do I have to pay taxes & customs for my order?

We ship from Germany. There are no additional taxes or customs duties in any EU country. In countries that are not part of the EU, customs duties are levied by your local customs authority when the order arrives in your country. You can find out how high these duties are in advance using this simple online calculator: https://www.easyship.com/duties-and-taxes-calculator/germany You can find all shipping conditions here.

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Which shipping methods are possible?

We ship via DHL, UPS and for large shipments via a forwarding agent. You can find all shipping conditions here .

How can I return my order?

Please request prior confirmation from Customer Service to confirm the correct return address. Please note the return period of 14 days. The return can then be sent back to the address below. Please enclose a copy of the invoice or order confirmation with the parcel so that we can allocate it quickly. Please ensure that the goods are in a saleable condition, in their original packaging and undamaged. Return address: Droplion c/o Masori Puricellistrasse 1 54298 Welschbillig Germany

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Your purchases at Masori are covered by the 3-year Masori warranty , i.e. we extend the manufacturer's warranty (usually 12 months) to a full 36 months at our expense - at no additional cost or effort for you. Click here for the detailed warranty conditions.

Product-specific questions

Where can i mount my amplifier.

As space is at a premium in most vehicles, it is important to find the right place to install your amplifier. An amplifier needs some space around it so that it can dissipate the heat that builds up during operation, otherwise it will overheat and shut down. Our two preferred installation locations are therefore under a seat or in the trunk. Installation under the seat saves space and the amplifier remains invisible. It also allows you to run shorter cables from your receiver. An amplifier mounted in the trunk compartment requires longer power and signal cables, but is safely hidden and closer to the rear speakers and your subwoofer.

Why do I have to fit an additional fuse to the battery? And how big should the fuse be?

The answers to most questions about fuses include the word "safety". While most car stereo amplifiers come with their own fuses, these fuses are only meant to protect the amplifiers themselves. You need to install a fuse on the battery to protect the power cables, your car and yourself from fire in the event of a short circuit. This is explained in more detail in the next two answers.

Why a fuse on the battery?

In the event of an electrical mishap, you don't want a live cable running through your vehicle. Installing a fuse with the correct amperage rating in your power cable will protect your car and equipment from the dangers of a short circuit. A short circuit occurs when a live cable comes into contact with bare metal (such as the chassis of your car). Since the entire body of your car can be considered a "negative" or ground, you can think of a short circuit as the positive terminal touching the negative terminal. You definitely don't want this to happen, but if it does, a properly installed fuse can prevent a fire or other damage. A fuse works by "blowing" and interrupting the flow of electricity. A fuse is much easier and cheaper to replace than your car or your life. So given the alternatives, "blowing a fuse" is a relatively good thing. You can optimize the protection your fuse provides by installing it as close to the battery as possible - this increases the length of the protected cable behind it. We recommend a maximum distance of 30 centimeters from the battery.

How big should the fuse be?

The following list provides a guide to the correct fuse values: 80A (suitable for up to 16mm² cable and approx. 1300W amplifier power) 100A (suitable for up to 20mm² cable and approx. 1700W amplifier power) 120A (suitable for up to 25mm² cable and approx. 1900W amplifier power) 150A (suitable for up to 35mm² cable and approx. 2100W amplifier power) 200A (suitable for up to 50mm² cable and approx. 3000W amplifier power) 250A (suitable for up to 70mm² cable and approx. 3600W amplifier power) 300A (suitable for up to 95mm² cable and approx. 4300W amplifier power)

Which cables do I need to connect my amplifier?

Amplifiers are not usually supplied with the cabling needed to connect them. However, we offer a range of amplifier wiring kits that include everything you need to send signals and power to your amplifier. You will need a thick power cable that runs from the positive terminal of the car battery through the bulkhead of the car to the amplifier. The required thickness of the power cable is determined by the manufacturer of the amplifier - you can look it up in the user manual or online, we will be happy to help you make the right choice here. Make sure you install a fuse or circuit breaker near the battery. Without such a fuse, an accidental short circuit can be a fire hazard and damage your amplifier (not to mention your car). You will also need another cable with the same cross-section to act as a ground wire. You don't need such a long earthing cable because the earthing point can be close to the amplifier. The point on the chassis of your car where you screw on the ground cable should be cleaned and free of paint to ensure a firm electrical connection. The last cable you need to power the amplifier is a power-on cable. It does not need to be as thick as the power and earth cables (1mm² should be sufficient). It is tapped from the remote connection on the back of your radio or from the ignition lock or fuse box. The audio signal is routed from the back of your radio to your amplifier via a cinch. Your RCA cable should be long enough to reach the amplifier, but not so long that it has a lot of slack and could get kinked over time. If you are using a radio without RCA outputs, you can get the input signal from your amplifier through the factory speaker wiring, either behind the radio or through the rear speaker wires. Many amplifiers have high level or speaker inputs to support this type of setup. Otherwise, you can use a highlow adapter as an output converter to convert the speaker signal to the preamp/cinch level required by your amplifier's input. At the other end of the amplifier you need a speaker cable. Usually 1.5mm² or 2.5mm² mm thick cable is sufficient. Remember that current flows more easily through thicker cables.

How big are the power and earthing cables that I need for my amplifier?

Your car amplifier draws a lot of current from your vehicle's electrical system and therefore needs a sufficiently thick power cable so that the current can flow freely and without resistance. This is important, as otherwise your amplifier may underperform or even overheat and switch off. For the installation of a single amplifier, the required cable cross-section is specified by the manufacturer of the amplifier and can be found in the operating instructions or online. We are happy to help you choose the right cable! If you use thicker power and earth cables, your amplifier can draw the required current from the battery more easily. However, the cables must still fit into the amplifier connections. If you do not have the manual or are planning a system with several amplifiers, you should look at a 12V cable thickness table to determine the correct cable cross-section. 16mm² cables are suitable for approx. 1300W amplifier power 20mm² cables are suitable for approx. 1700W amplifier power 25mm² cables are suitable for approx. 1900W amplifier power 35mm² cables are suitable for approx. 2100W amplifier power 50mm² cables are suitable for approx. 3000W amplifier power 70mm² cables are suitable for approx. 3600W amplifier power 95mm² cables are suitable for approx. 4300W amplifier power

What is this thin blue cable for?

The thin blue cable is called the power-on cable as it transmits the signal to switch on the amplifier. The power-on cable runs between the amplifier and your radio. You don't want your amplifier to be on all the time and drain your battery every time you park. The power-on signal triggers an electronic switch in the amplifier that turns it on as soon as the receiver is turned on. The switch-on cable must be connected correctly so that the amplifier can be switched on.

What is the biggest amplifier I can connect to my car's electrical system?

The amperage of your battery determines how powerful the amplifier is that you can install. This will give you a rough idea of how much power reserve your car's system has. Next, you need to calculate the approximate power consumption of the amplifier you want to install. To calculate the current draw of an amplifier, add the number of channels to the RMS watts per channel (a 2-channel amplifier with 100 watts RMS per channel would draw 200 watts), add the power of other amplifiers. If these figures are too much for you, you will find a simpler solution here: A battery with a capacity of 60Ah is normally sufficient for a music system with 1000 watts RMS total power, an 80Ah battery for a system with 1500 watts RMS and a 100Ah battery for a system with 2000 watts RMS total. A capacitor (called a powercap) or an additional battery can help if your system has more power. We will be happy to advise you on whether you need a powercap or an additional battery.

Do I need an additional battery or a powercap?

Where should i earth my amplifier.

Your ground cable should have the same cross-section as your power cable and must be in direct contact with the metal body of the vehicle. Look for a bolt or screw that is in contact with the vehicle frame near the amplifier. Remove the bolt or screw and scrape off the paint or dirt. A washer will help your ground cable maintain a firm contact with the body. Use a ring terminal on the end of the ground wire to securely attach it to the bolt. If you can't find a suitable grounding screw or bolt, you can drill a hole for it. Be careful not to drill into the gas tank, a gas line or a brake line. If you need to earth several components, try to earth them all to a single screw. How much power do I need for my subwoofers or speakers? The correct answer to this question depends on which subwoofer or speaker you choose. In the technical data of each subwoofer and speaker you will find a recommended power range (in continuous or RMS watts). As a general rule: more power is better, because bass and higher levels are very power-hungry. To ensure that your system really delivers, we recommend that you choose an amplifier that is in the upper third of the maximum RMS output of your speaker and subwoofer. As a rule of thumb, you can assume that an amplifier should offer 1 to 1.5 times the RMS power that a subwoofer or speaker is specified with in the RMS specification. The RMS power of your amplifier can even exceed the maximum RMS power of the speaker, provided you pay attention to the sound quality - if the sound starts to distort or "break up", you have reached the power limit of your amplifier/speaker combination. If you turn down the volume control a little, your woofer will be safe; clean, loud sound will not damage your speaker. This RMS power of the amplifier is only available when the volume control of your radio is turned up and the gain control of your amplifier is set correctly.

What should I know about the impedance of my speakers?

The impedance is the electrical resistance of the voice coil of a loudspeaker or subwoofer to the voltage output by the amplifier. In contrast to a fixed resistance value of a resistor, the impedance of a coil changes with the frequency of the signal. The "nominal" impedance of a particular loudspeaker or subwoofer is the value assigned to it by the manufacturer for meaningful calculation and application of power. This impedance represents the load against which the amplifier must work to produce sound. The lower the load on the amplifier, the more power it can deliver. Unfortunately, there are limits to how low a speaker's impedance can be before the amplifier tries to deliver more power than it can. The minimum impedance that most car amplifiers are stable for is a 2-ohm load on each channel, or a 4-ohm load for bridged channels, and 1 or 2 ohms for subwoofers. Almost all full-range speakers in cars have an impedance of 4 ohms. There are different impedances for subwoofers. You can combine multiple subwoofers in different configurations and achieve a total impedance that your amplifier can handle, so dual voice coils are often found here. When the voice coils of speakers or subwoofers are connected in series - one after the other, a plus from one to a minus from another - you add their impedances to get the total impedance. Two 2-ohm voice coils in series give a 4-ohm load. If you wire speakers or sub-coils in parallel - each terminal is connected to the same pole, plus to plus, minus to minus - you take the impedance value of one coil and divide it by the number of coils. Two 2-ohm speakers connected in parallel result in a 1-ohm load. For more information on impedance, please contact our customer service.

How can I operate a pair of speakers and a subwoofer with a single car audio amplifier?

One option is a 3-channel amplifier with two channels for your front speakers and a separate channel with more power for your sub. But this leaves no room for future expansion. To get the most out of your investment, it's important that you choose a device that will serve you well now and won't be too small when your system grows. If you opt for a 4-channel amplifier, driving a pair of front speakers and a subwoofer is a breeze. You simply need to operate your amplifier in what is known as 3-channel mode. To do this, you bypass the rear channels to drive your subwoofer, while the front channels drive the two normal stereo speakers. When you bridge the rear channels, you combine them into a single channel in mono mode. Choose an amplifier that has a built-in low-pass filter for this bridged channel. The crossover and higher output power of the mono channel make this an ideal solution for driving your subwoofer. As your system grows, you can use a separate amplifier for your subwoofer. Then you could add another pair of stereo speakers as a rear fill and run your 4-channel amplifier in 4-channel mode.

What are the different amplifier "classes" all about?

Amplifiers are divided into different classes depending on how their internal circuitry works. In the world of car hi-fi, most amplifiers are either Class AB or Class D. Class A amplifiers always have current flowing through their output transistors (or tubes). This is an extremely inefficient way to increase power and Class A amplifiers are large, heavy and get very hot. The advantage of Class A operation is its linearity - Class A amplifiers produce the cleanest power with the best fidelity and lowest distortion of any other amplifier class. Class B amplifiers operate in such a way that each output transistor only carries current half the time and switches off when the signal is not present. Class B amplifiers are very efficient, but distort the signal by constantly switching on and off at the output. Class AB is the traditional amplifier design used in car radios, home theaters and stereo receivers. The output transistors are turned down a little when they are not needed. The result is good sound quality and reasonable efficiency (often 50%). With Class D amplifiers, the transistors are switched on and off quickly, which significantly increases the efficiency of the amplifier, sometimes reaching up to 90%. A Class D amplifier takes the input signal and transfers it to high current pulses generated by the power supply. This creates a slight distortion in the high frequency range, which is above the audible range and can easily be removed with a low pass filter at the output. Class D amplifiers can be very small in relation to their power. This is why they are increasingly being used in the mobile audio world, where space is at a premium.

What is the difference between "parallel" and "serial" cabling?

If you connect a pair of speakers in parallel to an amplifier, connect the positive cables (+) of both speakers to the positive terminal (+) of the amplifier and the negative cables (-) of both speakers to the negative terminal (-) of the amplifier. If you wire two 4-ohm speakers in parallel, the amplifier will see a 2-ohm load. This lower load (lower resistance) allows the amplifier to deliver more power, but it gets hotter. Amplifiers that can cope with this additional heat development are considered to be 2-ohm stable. The series connection works in the same way as with flashlight batteries: Connect the positive terminal of one speaker to the negative terminal of the other speaker. Connect the positive terminal of the amplifier to the positive terminal of one speaker. Then connect the negative terminal of the first speaker to the positive terminal of the second speaker. Finally, run a cable from the negative terminal of the second speaker to the negative terminal of the amplifier. If you connect two 2-ohm speakers in series, the amplifier will be loaded with a 4-ohm load. This higher ohm load (higher resistance) inhibits the current flow from the amplifier. You get less power, but the amplifier runs cooler and is more stable.

When should I use a mono amplifier instead of a multi-channel amplifier?

Mono amplifiers with one channel are intended for subwoofers. They are designed for a wide range of impedances and have tone controls and filters specifically designed for bass reproduction. As mono amplifiers are usually class D amplifiers, they are a good choice for driving subwoofers - class D amplifiers have a high power to power ratio and excellent efficiency, which is exactly what you need when dealing with power hungry low frequency signals. Most mono amplifiers are designed for operation at 2 ohms, but some are also suitable for 1 ohm. Multi-channel amplifiers, on the other hand, are usually designed for 2-ohm loads on the individual channels, but must be able to handle at least 4 ohms when bridged. This is an important distinction if you are using your amplifier to drive multiple subwoofers, because you cannot bridge your multi-channel, 4-ohm stable amplifier to drive multiple subwoofers that have less than a 4-ohm load. Instead, use a mono amplifier to drive a 2-ohm load - for example, two 4-ohm subwoofers or two 2-ohm dual voice coil subwoofers. This will allow you to drive your subwoofers at the maximum power of the mono amplifier without driving them at a dangerously low impedance.

What are the advantages of connecting 2 subwoofers to a mono amplifier? How would I wire them?

The advantages of connecting two subwoofers to a mono amplifier are the same as any other number of subwoofers to a mono amplifier: you can drive the subwoofers with more power at lower impedances. Because low frequencies are less directional (i.e. it's harder for your ears to tell where low frequencies are coming from than high frequencies), bass is often transmitted in mono. Mono here refers to a single channel (as opposed to stereo or two channels), not a speaker. Most mono amplifiers have two sets of speaker terminals to make installation easier: If you connect two subwoofers to the amplifier and use a thick cable, you can attach the wires there without having to cut them. In reality, however, these terminals are connected together in the amplifier - both positive terminals are connected to the same point in the amplifier, as are both negative terminals. If you are using more than two subwoofers, simply connect them in parallel or in series (or a combination) to get as close as possible to the minimum impedance of the amplifier.

How do I set the amplification (gain, level) and the bass amplification of my amplifier?

One of the last steps in installing an amplifier is to set its gain correctly. The gain setting matches the input level of your amplifier to the output level of your receiver, ensuring maximum distortion-free music and minimum background noise. This process is also called "gaining in", as it is used to correctly adjust the "gain" or "level" knob. If your amplifier has a clipping LED, disconnect all speakers and only pay attention to the clipping LED instead of the distortion of the sound. Start with all EQ presets and tone controls on the radio turned off or set to low. Turn off all filters on your amplifier, set the bass boost to zero and turn the gain to a low value. Play some familiar music and turn up the volume on the radio until you hear the music start to distort, then turn it down a little to make it sound clean. If you don't hear distortion even at full volume, turn the volume of the radio to ¾ full. Slowly turn up the gain on your amplifier until you hear the music start to distort or the clipping light comes on, then turn it down a little so it sounds clean again and the clipping light goes out. Reduce the volume of the receiver to a comfortable level. Play the familiar song over and over while you continue to adjust your system. Adjust the EQ presets or tone controls on the receiver to how you want to hear your music. For a 2 or 4-channel full-range amplifier, turn on the amplifier's high-pass filter and adjust it to remove the lowest bass tones from the full-range speakers. These low tones would likely be the first to distort through the speakers when you turn up the volume later. With subwoofer amplifiers, you turn on the low pass filter and remove everything that is not bass from the sound of the subwoofer. The bass boost is another type of EQ or tone control, usually related to a particularly low tone. Experiment with it carefully and listen to how it affects the sound of the bass and adjust it to your liking. Readjust the gain control on the amplifier - first turn down the gain on the amplifier and then repeat steps 2 and 3. Turn up the volume on the receiver until you hear the music start to distort and then turn it down a little to make it sound clean. If you don't hear any distortion even at full volume, turn the receiver volume up to ¾ full. Slowly turn up the gain control on your amplifier until you hear the music start to distort, then turn it down a little to make it sound clean again. Re-adjusting the gain (the last two steps) is important to compensate for any EQ or boost effects so that the gain of your amplifier is set exactly the way you hear your music.

What is the difference between peak watts and RMS watts?

The RMS wattage is a measure of power capacity that is used to compare and match components with each other. The peak power, which is often twice as high as the RMS value, is only achieved during short-term peaks. You should only use RMS values when comparing and matching devices.

Audison Thesis TH quattro - 4 Channel Power Amplifier

• Description
• Why Buy From Us

The Audison Thesis quattro is a fully adjustable four-channel amplifier, entirely managed by the internal microprocessor, for limitless system configurations.

Thesis amplifiers were born with the know-how and experience achieved with the HV venti, improved by the innovation of digital technology. The result is a perfect combination between the highest level of analog technology and the advanced features of digital technology in one unique product. The precious synergy with Full DA HD technology takes the in-car listening experience to a whole new level of excellence; the synthesis of unique engineering know-how employed in mobile audio reproduction.

Audison Thesis TH quattro - Product Features

• Complementary differential circuitry with current mirror.
• Cascode A Class driver with inverted complementary triplet power stages.
• Integrated 24-bit / 192 kHz Hi-End DA converters.
• Compatibility with Audison Full DA HD technology and Hi-Res audio files listening certification.
• SPDIF and AD Link optical digital inputs that manage up to 8 digital channels on RJ-45 connector.
• Dual Mono Construction featuring four power supplies in Synchro-PWM configuration.
• Sensitivity control featuring 256 steps resistive switching for a resolution of 120 dB.
• Energy Saving, Hi-Current, Hi-AB Class, A Class presets selectable in real time.
• Digital control via integrated settings panel, DRC and PC Software.
• High quality crossover module supplied.
• Chassis extruded from solid aluminium and built using CNC machines.

Technologies

• Hi-Res audio -  According to the definition of HiRes audio provided by JAS (Japan Audio Society - jas-audio.or.jp), HV venti far exceed the above 40 kHz bandwith analog requirement, providing an astonishing 5 ÷ 75k Hz (@ -3 dB, 2 VRMS, 4 Ω).
• FULL DA HD -  Pure digital signal transfer with a resolution up to 24 bit / 96 kHz
• DIGITAL INPUTS AND OUTPUTS -  Innovation is at the heart of the state-of-the-art digital decoding section. The S/PDIF optical input allows direct connection to digital sources with the ability to re-launch the digital signal to other Thesis amplifiers through the AD Link (Audison DigitalLink) system. Each amplifier features 192 kHz/24 bit PCM D/A conversion through a very high quality converter.
• BIAS CONTROL -  Provides the selection of four possible presets: Energy Saving, Hi-Current, Hi-AB Class and full A Class operation.
• REMOVABLE CROSSOVER -  Inherited from the HV venti and making the most of TH’s extreme versatility, the complete crossover circuit of the TH amplifier is removable; a high-end sound quality solution.
• DUAL MONO CONSTRUCTION-  Four Synchro-PWM power supplies allow for a very fast transient current response and to create a Dual Mono configuration.

Output power (RMS) @ 14.4 VDC, 1% THD:

Further Information

Audison Thesis TH quattro - Tech Sheet

Audison Thesis TH quattro - User Manual

Builds featuring the Audison Thesis Quattro

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Below is a list of all the Manufacturers warranty timeframes with any special instructions for extended warranties:

• 1 Year Standard Manufacturers Warranty
• 5 Years standard Manufacturers Warranty

AudioControl

• 5 Years with Installation by an Authorised Installer (Studio Incar is an Authorised Installer)
• 1 Year if you are doing your own Installation
• 2 Years if you register the product with the UK supplier
• 2 Years standard Manufacturers warranty
• 1 Year standard Manufacturers warranty
• 90 Days  Standard Manufacturers Warranty
• 3 Years   Extended Warranty - Product Registration within 30 days of Purchase
• 6 Months standard Manufacturers warranty

Chord Company

• Lifetime Warranty

Cyrus Audio

• XR series - 3 Years
• Classic series - 2 Years
• Turntable - 3 Years

Product Registration Here

• 2 Years on Car Audio Products - No Extendable Warranty
• 2 Years standard Warranty on Home Audio Products
• up to 8 Years Extendable Warranty on Home Audio Products when you register at Dynaudio
• 2 Years Extended Warranty when registered with Focal
• 2 Years Standard Manufacturers Warranty
• 1 Year   standard Manufacturers warranty
• 2 Years   if you register the product with the   UK supplier
• 1 Year for Speakers and Subwoofers
• 2 Years for Amplifiers and Processors
• 3 Years Standard Manufacturers Warranty
• 1 Year Standard Manufacturer Warranty
• 3 Years Extended Warranty if Registered with Mission

Peachtree Audio

• 3 Years Extended Warranty if Registered with Peachtree
• 3 Years Extended Warranty if Registered with Pro-Ject

Q-Acoustics

• 4 Years for Passive Loudspeakers
• 1 Year for Active Loudspeakers / Subwoofers
• 5 Years for Passive Loudspeakers if Registers with Q Acoustics
• 2 Years for Active Loudspeakers / Subwoofers if Registered with Q Acoustics
• 1 Year  Standard Manufacturer Warranty
• 3 Years Extended Warranty if registered with Wharfedale

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Product Key Features

• Model TH QUATTRO
• RMS Power 1400W

Audison Car Audio Amplifiers

Audison car amplifiers 5 channels, 4.0 channel car audio amplifiers audison, audison mono channel car audio amplifiers, audison 2 channel car audio amplifiers, audison car audio.

• Audison Manuals
• Car Amplifier
• Thesis TH quattro
• Advanced manual

Audison Thesis TH quattro Advanced Manual

• Advanced manual (71 pages)
• page of 72 Go / 72

Table of Contents

• Packaging Contents
• Available Accessories (Not Included)
• Installation
• Fixing Template
• Functions Description
• How to Remove the Panel / the Protection Knob
• How to Connect the Power Supply
• How to Replace the Fuse
• How to Connect the Speakers in 4 Ch Mode
• How to Connect the Speakers in 3 Ch Mode
• How to Connect the Speakers in 2 Ch Mode
• Input Controls
• Front Panel
• How to Connect the Remote
• How to Connect the Source through the Preamplified Analog Input (Standard Mode)
• Power Output
• Electronic Crossover
• Custom Module
• How to Insert
• Analog Input
• Inputs and Pre-Amplifier
• ASC - Amplifier Status Controller
• Setup Amplifier: Main Input
• How to Change: Main Input
• How to Adjust the Volume Control and Input Selector Using a Digital Source
• Digital Inputs
• How to Achieve same Output Volume Level Using an Analog Source (with Its Own Volume Control) and a Digital Source
• How to Connect a Source through the Optical Digital Input in a System Featuring more than One TH Amplifier
• How to Connect a Source through an Optical Digital Input in a System Featuring Other Non-TH Amplifiers
• How to Connect an Analog and a Digital Source in a System Featuring Other Non-TH Amplifiers
• Setup Amplifier: Amp ID on 4 Ch Mode
• Setup Amplifier: Amp ID on 3 Ch Mode
• Setup Amplifier: Amp ID on 2 Ch Mode
• Setup Amplifier: Amp ID-Preout
• How to Adjust the PRE out Analog Output
• Digital Input
• Status Monitor
• Runtime Monitor
• Info and Alert Sentences
• DRC - Digital Remote Control
• Acnet - Audison Control Network
• System Display
• Amplifier Setting: Identification
• Amplifier Setting: Inputs
• Amplifier Setting: Sensitivity and Preout Level
• Amplifier Setting: Dual Power Memory
• System Audio Control
• Amplifier Status
• System Amplitude Setup
• System Dual Power Setup
• Technical Specifications

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Summary of Contents for Audison Thesis TH quattro

• Page 1 Internet store of PHONES (044) 360-7-130 294-0-130 autogoods (050) 336-0-130 597-0-130 (063) 788-0-130 SKYPE (067) 233-0-130 km-130 (068) 282-0-130 CAR RECEIVERS — Receivers • Media receivers and stations • Native receivers • CD/DVD changers • FM-modulators/USB adapters • Flash memory • Facia plates and adapters • Antennas • Accessories | CAR AUDIO —...
• Page 2 PRELIMINARY ADVANCED MANUAL TH quattro Car Audio Multichannel Amplifier www.audison.eu Autogood products internet store http://130.com.ua...
• Page 3 OWNER’S MANUAL / TH quattro INDEX THESIS - The project Packaging Contents Installation Fixing template Rear Panel Functions Description How to remove the panel / the protection knob How to connect the power supply How to replace the fuse How to connect the speakers in 4 Ch mode How to connect the speakers in 3 Ch mode How to connect the speakers in 2 Ch mode Input controls...
• Page 4 ASC - Amplifier Status Controller Status Monitor Runtime Monitor Info and Alert sentences DRC - Digital Remote Control Info and Alert sentences How to connect How to install ACNet - Audison Control Network Technical Specifications Autogood products internet store http://130.com.ua...
• Page 5 Heart of the system is a digital power microprocessor. It manages the amplifier functions and communicates with the user through a control panel as well as the Display Monitor, featuring the DRC remote control or, in a more complete and direct way, through the ACNet Audison Controller Network software.

Page 6: Packaging Contents

Page 7: installation.

• Page 8 Fixing tem Autogood products internet store http://130.com.ua...

Page 9: Fixing Template

• Page 10 IN A IN B OUT A IN A IN B OUT A DC OUT DIGITAL AUDIO CONTROL BUS ADRS 1 - AC Link - 2 OPTICAL OUT - AD Link - IN Mode A level panel spacer 66 mm (2.6”) Mode B level panel 26 mm (1.02”)
• Page 11 IN B OUT A IN B OUT A DIGITAL AUDIO CONTROL BUS ADRS 1 - AC Link - 2 OPTICAL AD Link - IN level panel spacer 66 mm (2.6”) level panel 26 mm (1.02”) spacer Autogood products internet store http://130.com.ua...

Page 12: Rear Panel

Page 13: how to connect the power supply, page 14: how to replace the fuse, page 15: how to connect the speakers in 4 ch mode, page 16: how to connect the speakers in 3 ch mode, page 17: how to connect the speakers in 2 ch mode, page 18: input controls, page 19: front panel, page 20: how to connect the remote, page 21: how to connect the source through the preamplified analog input (standard mode).

• Page 22 OWNER’S MANUAL / TH quattro Front Panel How to connect the source through the preamplified analog input (standard mode) TH configured in 3 Ch mode Input: IN A (and IN B) Stereo Analog Pre Out: Stereo Analog (=IN A) Power Output: 3 Channels A Channels: Stereo B Channels: Mono (MIX L+R)
• Page 23 OWNER’S MANUAL / TH quattro Front Panel How to connect the source through the preamplified analog input (standard mode) TH configured in 2 Ch mode Input: IN A Stereo Analog Pre Out: Stereo Analog (=IN A) Power Output: 2 Channels A Channels: Mono (IN A Left) B Channels: Mono (IN A Right) Default preset...

Page 24: Electronic Crossover

• Page 25 OWNER’S MANUAL / TH quattro Electronic Crossover TH in 4 Ch Mode Filtering A channels and B channels TH in 3 Ch Mode Filtering A channels DO NOT INSERT TH-MXR.1MODULE 12 dB 12 dB Disabled Hi-pass Lo-pass 12 dB 12 dB 1.8k Disabled Autogood products internet store http://130.com.ua...
• Page 26 OWNER’S MANUAL / TH quattro Electronic Crossover TH in 3 Ch Mode Filtering B channels TH in 2 Ch Mode Filtering A channels (Left) and B channels (Right) Setup Xover Slope 12 dB (default configuration) When the amplifier is set up in a mono configuration, it is possible to set the crossover slope at 12 or 24 dB/Oct.
• Page 27 OWNER’S MANUAL / TH quattro Electronic Crossover TH in 3 Ch Mode Filtering B channels Setup Lo-pass Xover Slope 24 dB When the amplifier is set up in a mono configuration, and ASC is set at 24 dB Oct., it is anyway possible to set the crossover Low-pass at 12 or 24 dB Oct.

Page 28: How To Insert

Page 29: analog input.

• Page 30 OWNER’S MANUAL / TH quattro Example: Two Way+Sub, multi-amplified, TH amplifier Analog Input In order to build a Standard System: You have to follow same steps as per the above example. The only difference is for point 4, where the second TH is TH uno (mono);...
• Page 31 OWNER’S MANUAL / TH quattro Example: Three Way + Sub, multi-amplified, TH amplifier Analog Input Two Way +Sub, multi- amplified, amplifier Analog Input Autogood products internet store http://130.com.ua...
• Page 32 OWNER’S MANUAL / TH quattro Example: Three Way + Sub, multi-amplified, with and without TH amplifiers. Analog Input Autogood products internet store http://130.com.ua...

Page 33: Inputs And Pre-Amplifier

Page 34: asc - amplifier status controller, page 35: setup amplifier: main input, page 36: how to adjust the volume control and input selector using a digital source, page 37: front panel, page 38: how to connect a source through the optical digital input in a system featuring more than one th amplifier, page 39: how to connect a source through an optical digital input in a system featuring other non-th amplifiers.

• Page 40 OWNER’S MANUAL / TH quattro Front Panel How to connect an analog and a digital source in a system featuring more than one TH amplifier TH configured in 4 / 3 / 2 Ch Mode Input: Analog/Digital Optical S/P DIF Pre Out: Analog/Digital AD Link Power Output:...

Page 41: How To Connect An Analog And A Digital Source In A System Featuring Other Non-Th Amplifiers

Page 42: setup amplifier: amp id on 4 ch mode, page 43: setup amplifier: amp id on 3 ch mode, page 44: setup amplifier: amp id on 2 ch mode, page 45: setup amplifier: amp id-preout, page 46: how to adjust the pre out analog output.

• Page 47 OWNER’S MANUAL / TH quattro ASC - Amplifier Status Controller Setup Amplifier : X-Over Slope of bridged channels (B) with TH quattro in 3 Ch mode When the amplifier is set in 3 Ch Mode, you can choose the crossover filter slope of the B (bridged) channels.
• Page 48 OWNER’S MANUAL / TH quattro ASC - Amplifier Status Controller DUAL POWER & BIAS CONTROL A revolutionary function called Dual Power was introduced for the first time in the HV venti. Controlling the amplifier’s output power configuration, this function allowed the predetermination of the amplifiers output power and of the grade of the outputs operational class.
• Page 49 OWNER’S MANUAL / TH quattro ASC - Amplifier Status Controller DUAL POWER Values 160 W 160 W 55 W 55 W 250 mA 80 mA 10 mA 7 mA 8.9 A 6.6 A 3.6 A 2.6 A 1 Ω 1 Ω 2 Ω...
• Page 50 OWNER’S MANUAL / TH quattro ASC - Amplifier Status Controller Setup Amplifier: DUAL POWER Settings How to change presets on the Memory (DRC required) The TH quattro can be set with an operational mode for A Channels and an operational mode for B Channels. Using A Class or Energy Saving mode, these configurations will be automatically set on both channels.

Page 51: Digital Input

• Page 52 OWNER’S MANUAL / TH quattro Example: Three Way + multi-amplified Sub, TH amplifiers Analog + Digital Input Autogood products internet store http://130.com.ua...
• Page 53 OWNER’S MANUAL / TH quattro Example: Three Way + Sub, multiamplified with and without TH amplifiers. Analog + Digital Input Autogood products internet store http://130.com.ua...

Page 54: Status Monitor

Page 55: runtime monitor, page 56: info and alert sentences, page 57: drc - digital remote control.

• Page 58 MODEL (ADRS) PROTECTION TYPE Left or right A channel general protection. Amp off Call Audison Technical Support. Left or right B channel general protection. Amp off Call Audison Technical Support. Left or right A channel overload Autoreset protection. Check speaker load.
• Page 59 OWNER’S MANUAL / TH quattro DRC - Digital Remote Control DRC - How to connect IN A IN B OUT A IN A IN B OUT A DC OUT DIGITAL AUDIO CONTROL BUS ADRS 1 - AC Link - 2 OPTICAL OUT - AD Link - IN DRC/AC Link cable (provided)

Page 60: Acnet - Audison Control Network

• Page 61 ADVANCED MANUAL / ACNet ACNet - Audison Control Network Functions Description 1 • SYSTEM DISPLAY: TH amplifiers connected to the system with AC Link will be displayed in this area. If the ADRS are set correctly, this display will show the TH amplifier model name and its ADRS. If more than one amplifier is set on the system with the same ADRS, the software will only show and allow to tune the first one.

Page 62: System Display

Page 63: amplifier setting: identification, page 64: amplifier setting: inputs, page 65: amplifier setting: sensitivity and preout level, page 66: amplifier setting: dual power memory, page 67: system audio control, page 68: amplifier status, page 69: system amplitude setup, page 70: system dual power setup, page 71: technical specifications.

• Page 72 Autogood products internet store http://130.com.ua...

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robertreed5000

Audison Thesis TH Quattro 4 Channel Class A Amplifier 1400 Watts RMS

Check price.

• Nominal power (RMS) @ 12 VDC, 1% THD:
• 4 Ch @ 4 Ω 115 W x 4
• 4 Ch @ 4 Ω 40 W x 4
• Output power (RMS) @ 14.4 VDC, 1% THD
• 4 Ch @ 4 Ω 160 W x 4
• 4 Ch @ 2 Ω 260 W x 4
• 4 Ch @ 1 Ω 340 W x 4
• 3 Ch @ 4 Ω 150 W x 2 + 540 W x 1
• 3 Ch @ 2 Ω 250 W x 2 + 650 W x 1
• 2 Ch @ 4 Ω 500 W x 2
• 2 Ch @ 2 Ω 700 W x 2
• 4 Ch @ 4 Ω 55 W x 4
• Voltage: 11 ÷ 15 VDC
• Idling current (@ Dual Power Setting): 2.6 ÷ 8.9 A
• Idling current when off: 0.04 mA
• Consumption @ 14.4 VDC, 1 Ω,
• Max Musical Power: 105 A
• Remote In: 7 ÷ 15 VDC (1 mA)
• Remote Out: 12 VDC (20 mA)
• Fuse (AFS): 100 A
• Distortion -THD@1kHz,4Ω;90%Power: 0.03 %
• Bandwidth @ -3 dB, 2 VRMS, 4 Ω: 5 ÷ 70k Hz
• S/Nratio@Aweighted,1V,MaxPower: 104 dBA
• Damping factor @ 1 kHz, 2 VRMS, 4 Ω: 80
• Pre-In sensitivity: 0.3 ÷ 4.8 VRMS
• Pre-In impedance: 15 kΩ
• 14.4 V: 150 W x 4 Ch
• SN ratio (ref. 1 W output): 80 dBA
• Max size (mm/inches): 259 x 510 x 67 / 10”1/4 x 20”1/8 x 2”11/16

Beautiful amp! GLWS!  

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