Audio Adjustment <Network>

Important points in adjusting the slope

•A decrease in the absolute value of the slope (more gentle inclination) makes the frequency characteristics more susceptible to interference from the next band.

•Increasing the absolute value of the slope (sharper inclination) lessens the connections between bands, giving the listener the impression of hearing separate, unrelated sounds.

•Make adjustments while monitoring the link between bands by outputting all the bands as well as by outputting two neighboring bands only, using the Mute function (refer to page 34).

Important points in adjusting the phase

•When the values of the slope at the crossover point are set at –12 dB/oct. or –36dB/oct. for both filters, the phase reverses 180˚ in the cut-off frequency of the filter. In this case, setting to reverse improves the connection between sounds.

Normal Reverse

0 dB

–3 dB

–12 dB/oct.

–36 dB/oct.

For better frequency characteristics

•Adjusting the filter together with the equalizer function (page 22) creates a natural sound environ- ment in the car.

Adjusting the subwoofer effectively

•Although the slope of the high pass filter is normally set as PASS, H.P.F. may sometimes repro- duce clear and high quality bass rage. In this case, adjust the cut-off frequency to 20 — 40 Hz and adjust the slope to –18 — –36 dB/oct.

•If the subwoofer is installed in the rear tray, setting up the slope of the low pass filter gently (–6,

–12 dB/oct.) gives the listener the feeling that the sound dwindles to the rear, with a resultant dis- tortion of the forward sound image position. It is recommended to set the slope at –18 dB/oct. or more and set the cut-off frequency to 100 Hz or below.

Adjusting the low-range effectively

•When the subwoofer is connected and low-ranges are reproduced by small speaker unites such as 4 or less than 5-1/4 in. in diameter, setting the low-range H.P.F. as PASS may increase the distortion when strong bass signals enter. Should this occur, set up H.P.F. to avoid interference with the sub- woofer.

Adjusting the high-range effectively

•Depending on the speaker units installed, bass signals for the tweeter (about 2 kHz or below) may cause distortion as the high pass filter is being adjusted. If this happens, set a sharp slope of –18 —

–36 dB/oct. In this case, choose such settings that the mid-range and tweeter do not become sepa- rated.

•The low pass filter is generally set to PASS. However, if the ultratreble band falls harshly on the ear, it is possible to set up a more gentle slope of about –6 dB/oct.

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Pioneer DEQ-P9 owner manual Important points in adjusting the slope, Important points in adjusting the phase
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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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