User manual PIONEER DEQ-P90

[. . . ] Universal Digital Preamp / Equalizer Owner's Manual DEQ-P90 English Contents Key Finder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Head Unit (DEX-P90RS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Remote Control (DEX-P90RS) . . . . . . . . . . . . . . . . . . . . . . . . 3 Opening and Closing the Remote Control Cover . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Verify the composition of the system in order to correctly adjust the bands for the connected speaker units. 28 Audio Adjustment <Network> Filter Adjustment <FTR> (Open state) The following adjustments can be made during filter adjustments. Make the appropriate adjustments for the reproduced frequency band and characteristics of the connected speaker unit. Filter frequency adjustment: Every 1/3 octave Level adjustment: 0. 5 dB/1 step The cut-off frequencies of the high pass filter (H. P. F. ) and the low pass filter (L. P. F. ) of each band (subwoofer, low, mid, high) and the reproduction level of each band are set up. Range Subwoofer-range Low-range Mid-range High-range Cut-off frequency of H. P. F. 20 Hz -- 100 Hz 25 Hz -- 250 Hz 200 Hz -- 10 kHz 1. 6 kHz -- 20 kHz Cut-off frequency of L. P. F. 25 Hz -- 250 Hz 250 Hz -- 10 kHz 2 kHz -- 20 kHz 8 kHz -- 20 kHz Level adjustment range ­24 -- +10 dB ­24 -- 0 dB ­24 -- 0 dB ­24 -- 0 dB Slope adjustment: PASS, ­6 dB/oct. (Every ­6 dB/oct. , total of 6 steps) The slope (inclination of attenuation of filter characteristics) of H. P. F. Note: · When the slope is set as PASS, the audio signals bypass the filter circuit, cutting out the effect of the filter circuit. · In order to protect the speaker unit, H. P. F. · In order to protect the speaker unit, H. P. F. has no PASS set up for mid-range, however you can set to PASS by changing the settings (refer to page 32, step 8). Level (dB) Reproduced frequency band: the signals for frequencies during += is reproduced. 0 Slope adjustment Level adjustment 20 100 1K 10K Frequency (Hz) Cut-off frequency of the L. P. F. Cut-off frequency of the H. P. F. 29 About the H. P. F. and L. P. F. High pass filter eliminates lower sound ranges (low-range) from the set up frequencies and allows high ranges through. Low pass filter eliminates upper sound ranges (high-range) from the set up frequencies and allows low ranges through. About the slope This value indicates how many dB the signals attenuate when the frequency increases (or decreases) 1 octave (unit: dB/oct. ). Increasing the degree of the slope increases the degree of signal attenuation. Note: · Setting the slope of H. P. F. of the low-range as PASS creates a full range setup. Audio Adjustment <Network> Switching to the Filter Adjustment Mode 1. Open the cover of the remote control in the Network Menu (refer to page 4). This switches to Network Menu Setting Screen. 2. Press FUNCTION button 1 on Network Menu Setting Screen. The display switches to Filter Adjustment Screen, allowing filter adjustments. Using the Mute function (MUT) It is possible to turn the Mute function ON/OFF for each band. Turning ON the Mute function stops the sound output for that band. Adjust the filter while turning the Mute function ON/OFF as necessary. 1. Select the band for which the Mute function is to be turned ON. To select a band, consult "Adjusting the Filter" on the following page. 2. Press FUNCTION button 5 switches the Mute function ON/OFF. When muting is turned ON the filter curve displayed disappears from the display. Before making filter adjustments · When the position is set up for the driver's seat after adjusting the distance between the listening position and each speaker of the Time Alignment Adjustment function (refer to page 25), it is recommended that filter adjustments be made. · Store the different filter characteristics into memory, by the listening position set up with the Position Selector function (refer to page 13) or by the source being listened, and switch when necessary. Refer to page 34 for memory operations. 30 Audio Adjustment <Network> Adjusting the Filter First, determine the approximate band to be used, taking into consideration the reproduced frequency band and the characteristics of the connected speaker. 1. [. . . ] LPF frequency: 2 kHz -- 20 kHz, 1/3 oct. Gain: 0 dB -- ­24 dB (0. 5 dB) HIGH . . . . . . . . . . . . . . HPF frequency: 1. 6 kHz -- 20 kHz, 1/3 oct. LPF frequency: 8 kHz -- 20 kHz, 1/3 oct. [. . . ]