System Configuration

By purchasing the 4-channel 320/480QE amplifier, you are already one step closer to experienc- ing the purest and most natural sound quality in the automobile environment. To take full advantage of the potential of this amplifier, before installation, we strongly recommend that you acquaint yourself with all its available features and then spend some time in designing a system most suitable for you. Take into consideration the components you have now and those that you plan on adding or upgrading in the future.

BUILT-IN ASYMMETRICAL ELECTRONIC CROSSOVERS

An electronic crossover has many advantages over passive crossovers - lower cost, simplified, yet more flexible system design, lower distortion and higher gain structure. The 320/480QE power amplifiers are equipped with built-in 18 dB per octave continuously adjustable electronic crossovers. The front and rear channels can be configured separately for full-range, high-pass or low-pass applications.

The line output is designed to provide additional expansion capability to your sound system.

BI-AMPLIFICATION

A bi-amplified system normally consists of an active crossover and two amplifiers. The active crossover divides the audio frequency spectrum into two ranges: frequencies below the crossover point are directed to the amplifier driving the subwoofer(s), while all frequencies above the crossover point are directed to the amplifier driving the mid-range/tweeters.

Because of the versatility of the Coustic 4-channel amplifier - the capability of being a 4-, 3- or 2-channel amplifier - you are quite free to build whatever mobile audio system you want or to plan a long term expansion scheme for your car’s audio system.

For example, with the low impedance input, you can use the 320/480QE as a 4-channel amplifier to upgrade your existing factory sound system to drive the stock front and rear speakers.

Or you can bi-amp your system using the front amplifier to drive a pair of high-passed mid/tweeter speakers while using the rear amplifier to drive a pair of woofers/subwoofers

You can also configure the 320/480QE as front and rear high-passed mid/tweeter amplifiers and use the output for connection to another subwoofer amplifier.

If you need more power, you can use the amplifier as a 2-channel subwoofer amplifier to drive a pair of subwoofers. The full-range line output can be used to drive an additional amplifier driving the rear full-range speaker.

3 CHANNEL CONFIGURATION

When the mode switches are set at the OFF position, the amplifier can be configured as two separate amplifiers. Each amplifier can be configured as either a 1-channel, bridged, mono amplifier driving a single speaker, a 2-channel, stereo amplifier driving a pair of speakers, or with the addition of passive crossovers, a quasi 3-channel amplifier driving a pair of left- and right-channel, full-range mid-tweeters and a mono woofer simultaneously. Care must be taken to choose capacitors and inductors of correct value; otherwise damage could be done to the speakers and/or the amplifier.

For the approximate passive crossover components’ value, please refer to Coustic’s website, http//:www.coustic.com.

MULTI-FUNCTION PROTECTION INDICATOR

When the red protect indicator lights up it signifies a high operating temperature is detected and the amplifier is temporarily shut down to allow for a cooling period. As soon as the temperature returns to a safe level, the amplifier will restart and resume normal operation.

This indicator also lights up when the amplifier detects either an over-current situation, shorted speaker outputs or a DC offset at the outputs. Turn off the amplifier, double-check all inputs and speaker connections to make sure there is no short or inappropriate inputs. If all connections are in order, turn on the amplifier to resume operation.

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SPEAKER IMPEDANCE

Although extremely low impedance speaker loads will not damage the amplifier, for stereo mode, we recommend speaker loads of 2, 4 or 8 ohms; for bridged mono mode, 4 or 8 ohms.

(Note: In bridged mono mode, the amplifier sees only half of the speaker impedance).

NOTE: Remember that we are not defying the laws of Physics! IF you decide to connect ANY Coustic amplifier into a bridged mono load BELOW 4 ohms, Physics dictates that current draw doubles! This is not too big a problem with the 320QE. But with the 480QE this is DANGEROUS. The current draw could be as great as 150 amps (peak). Make sure you wire your system properly.

POWER CABLES

Power cables are as important as battery capacity. Use only high quality power cables of gauge size AWG 8 (AWG 4 for the 480QE) or bigger for installation.

YOU CAN NEVER HAVE TOO BIG OF A POWER/GROUND WIRE!

CIRCUIT BREAKER/FUSES

It is also advisable to install a circuit breaker/fuse close to the battery. This would effectively lower the risk of the power cable catching fire should a short circuit occur in the audio system.

A circuit breaker or fuse with 50% the rating of the main batteries amp hour rating is recommend- ed. Going larger in circuit breaker or fuse value means that you have NO protection. DO NOT over fuse! Fuses on the amplifier DO NOT protect the amplifier, they protect the car.

SPECIAL PRECAUTIONS & ACCESSORIES

Quality equipment, and proper system design and installation are the ingredients for the ultimate car audio system. With your wise decision to purchase this Coustic amplifier, you are already one big step closer to realizing your dream. The next step is simple - have an experienced professional Coustic dealer install your audio system. However, if you prefer to install the system yourself, we have the following recommendations for your reference:

Caution: Improper installation will void the product warranty and Coustic is not responsible for any consequential damage to the amplifier and/or other audio components and/or electrical components of the vehicle.

TERMINALS, LUGS AND CONNECTORS

High current terminals, lugs and/or connectors are also required to ensure a safe and sure electrical connection and conduction.

NEGATIVE GROUNDING SYSTEM

The 320/480QE power amplifiers are designed for use with a 12-Volt negative ground system. Installing this amplifier in a vehicle with a POSITIVE ground system will result in severe damage to the amplifier, other audio components and/or the vehicle’s electrical components.

If your vehicle happens to run on a positive ground system, please consult your Coustic dealer.

WARNING: The 320/480QE power amplifiers are very powerful. We strongly recommend installation in the following manner:

(1)by professional mobile audio installers; and

(2)incorporating all of the above special precautions and accessories.

Failure to comply with either one or both of the above conditions will render the warranty void and Coustic is not responsible for any consequential damage to the amplifier, other audio components and/or electrical components of the vehicle.

& 480QE, 320QE specifications

The Coustic 320QE and 480QE represent cutting-edge advancements in the realm of audio equipment, specifically designed for high-performance acoustic applications. Renowned for their impeccable sound quality and robust design, these models come packed with features that set them apart in the competitive landscape of professional audio systems.

The Coustic 320QE is engineered to deliver crystal-clear sound reproduction with an impressive frequency response range. It boasts a peak power handling capability that enables it to manage high output levels without distortion, making it an ideal choice for both live performances and studio recordings. The intuitive interface allows users to easily adjust sound settings, ensuring optimal performance in any environment. With its lightweight construction, the 320QE enhances portability, catering to musicians and audio engineers who require gear that is both efficient and easy to transport.

On the other hand, the Coustic 480QE takes the concept of sound enhancement to the next level. Featuring advanced digital signal processing technology, it offers a wider range of sound customization options. This model includes multiple EQ presets and customizable parameters, allowing users to tailor audio output to their specific needs. The 480QE is also equipped with superior connectivity options, including Bluetooth and USB interfaces, facilitating seamless integration with a variety of devices. This flexibility is particularly beneficial for DJs and audio professionals who need to adapt to different performance settings.

Both models feature robust construction that ensures durability, making them reliable companions in demanding conditions. The specialized components used in the Coustic 320QE and 480QE contribute to their longevity and performance consistency. Additionally, they incorporate thermal management technologies to prevent overheating during prolonged use, allowing for extended performance without compromising sound quality.

In summary, the Coustic 320QE and 480QE stand out with their remarkable features and technologies. With their focus on sound quality, user-friendly interfaces, and durability, these models are designed to meet the needs of both professional and aspiring audio artists. Whether in studio settings or live performances, Coustic's commitment to excellence is evident in every aspect of the 320QE and 480QE, making them indispensable tools for sound professionals worldwide.