Audio Adjustment <Network>

What is the Multi-Amp System?

The multi-speaker system reproduces each frequency band (high, mid, low and ultrabass- ranges) through its own exclusive speaker unit. The multi-amp system provides an exclusive power amplifier for each speaker unit.

There is only limited space in a vehicle for installing speakers, and it is difficult to install large-diameter speakers in a door or on the dashboard and get high sound quality. To over- come this problem, tweeters (high-range) are sometimes installed in the dashboard in order to move the sound image upwards, or the subwoofers are installed in the rear tray in order to improve bass and ultrabass reproduction. Thus, using a multi-speaker system can correct imbalances in the sound image and significantly improve the total sound quality.

The multi-amp system offers the following features, allowing direct operation of the exclu- sive speaker unit for each frequency range by an exclusive power amplifier.

•It is possible to reduce the modulation distortion rate since high-range signals are not effected by strong signals in the low range.

•As it is possible to select amplifiers and speakers to suit the characteristics of each fre- quency range, the load on each unit is reduced, ensuring optimum performance.

Under the multi-amp system, it is necessary to divide the audio signals into each frequency range (band) and strictly control the set up conditions, using the network.

Under this system, the audio unit incorporates a network. The following adjustments can be conducted within the vehicle.

•

Time Alignment Adjustment function

: adjusts for the difference in the distance

 

 

between the listener and each speaker unit.

•

Filter function

: sets up a low pass filter and high pass filter to

 

 

decide the reproduced frequency band, the

 

 

level and the phase of each speaker unit.

As the audio signals are processed in the form of digital signals when the network is work- ing, the sound characteristics that best fit the vehicle interior may be created without any deterioration in sound quality.

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Pioneer DEQ-P9 owner manual Audio Adjustment Network, What is the Multi-Amp System?
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DEQ-P9 specifications

The Pioneer DEQ-P9 is a high-performance digital signal processor and equalizer that stands out in the realm of automotive audio systems. Designed for audiophiles and car enthusiasts alike, the DEQ-P9 merges cutting-edge technologies with user-friendly features to enhance sound quality and customization within vehicles.

One of the main features of the DEQ-P9 is its 31-band graphic equalizer. This allows users to precisely tune the audio output across the entire frequency spectrum. With comprehensive control, users can adjust each band to tailor the sound to their personal preferences or correct for acoustics specific to their vehicle. Coupled with a 5-channel built-in amplifier, the DEQ-P9 ensures that even the most demanding audio setups receive ample power and clarity.

In addition to its equalization capabilities, the DEQ-P9 utilizes advanced time alignment technology. This feature allows users to adjust the audio signal's timing so that all speakers in the vehicle can produce sound coherently. Proper time alignment ensures that sound waves from different speakers reach the listener's ears in perfect synchronization, resulting in clear and immersive audio.

Another hallmark of the DEQ-P9 is its extensive connectivity options, which include digital inputs for both optical and coaxial connections, as well as auxiliary inputs for external devices. This versatility means that various sources of audio can be integrated seamlessly, from traditional CD players to modern smartphones and streaming devices.

The Pioneer DEQ-P9 also supports a variety of sound enhancement technologies, including Dolby Digital and DTS processing. These technologies deliver a cinematic audio experience, enhancing surround sound playback for movie lovers and creating an enveloping atmosphere for music enthusiasts.

Pioneer's commitment to user-friendly design is evident in the DEQ-P9's intuitive interface, which features a full-color display and easy navigation options. This allows users to make quick adjustments on the fly, ensuring that they can enjoy optimal sound quality without distraction.

Moreover, the DEQ-P9 is designed with robust build quality, making it highly reliable for prolonged use. Its compact form factor allows for flexible installation options, fitting comfortably within various vehicle environments.

In summary, the Pioneer DEQ-P9 is an exceptional tool for enhancing the in-car audio experience. With its 31-band graphic equalizer, advanced time alignment, versatile connectivity, and support for immersive sound technologies, it caters to the needs of both casual listeners and dedicated audiophiles. Whether navigating city streets or embarking on long road trips, the DEQ-P9 promises to transform the automotive audio landscape, delivering unparalleled sound quality and customization.
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