Pioneer DEH-80PRS Owner's Manual - Page 24

Section 02 Operating this unit Phase You can switch phase (normal, reverse) for each speaker unit's input signal. When the continuity of sound between speakers is imprecise, try switching phase. This may improve the continuity of sound between speakers. Points concerning network adjustments Cut-off frequency adjustment ! With the low-range speaker installed in the rear tray, if you set Low LPF cut-off frequency high, bass sound is separated so that it appears to come from the rear. You are recommended to set Low LPF cut-off frequency to 100 Hz or lower. ! The maximum input power setting for middle-range and high-range speakers is usually lower than low-range speakers. Please be aware that if the Mid HPF or HighHPF cut-off frequency is set lower than required, strong bass signal input may damage the speaker. Level adjustment The basic frequencies of many musical instruments are in the middle range. First perform middle-range level adjustment, followed by high-range and then low-range level adjustment in that order. Slope adjustment ! If you set a small absolute value for the slope (for a gentle slope), interference between adjacent speaker units can easily result in degraded frequency response. ! If you set a large absolute value for the slope (for a steep slope), continuity of sound between speaker units is degraded, and sounds appear to be separated. ! If you set the slope to 0 dB/oct. (pass), the audio signal bypasses the filter, so the filter does not have an effect. Phase adjustment When the cross-over point value for filters on both sides is set to -12 dB/oct., the phase is reversed 180 degrees at the filter cut-off frequency. In this case, reversing the phase assures improved sound continuity. Normal phase Reverse phase Crossover point Muting the speaker unit (filter) You can mute each speaker unit (filter). When a speaker unit (filter) is muted, no sound is outputted from that speaker. ! If you mute the selected speaker unit (fil- ter), MUTE blinks and no adjustments are possible. ! Even if any speaker unit (filter) is muted, you can adjust the parameters for other speaker units (filters). 1 Use M.C. to select NW 1. Refer to Introduction of audio adjustments on page 20. 2 Turn LEVER to select the speaker unit (filter) to be adjusted. Low LPF (low-range speaker LPF)-Mid HPF (middle-range speaker HPF)-Mid LPF (middle-range speaker LPF)-HighHPF (high-range speaker HPF) 3 Press M.C. to mute the selected speaker unit (filter). MUTE blinks in the display. # To cancel the muting, press M.C. again. Adjusting network 1 Use M.C. to select NW 1. Refer to Introduction of audio adjustments on page 20. 24 En