Manual de usuario Pioneer, modelo DEQ-P90
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Important points in adjusting the level • The low band, because of its sound frequency characteristics, incorporates the basic frequencies of many musical instruments. It is recommended that the level adjustment of the low band be made first, and then the level adjustment of the mid, high, and subwoofer be made in that order. 31 7. Press the 5/. buttons and adjust the level of each band. Holding down these buttons continues their operations. Switch to each band and adjust the level in order to create a better overall balance. 8. Press FUNCTION button 3 and adjust the slope of each filter. Press the button to change the adjustment values. The slope can be set up for either the high pass filter or the low pass filter. When setting up, have in mind the adjustments to be made to the next band. When you selected MID H.P.F. • (Press the button again returns to MID H.P.F. slope setting.) 9. Press FUNCTION button 4 and adjust the phase of each band. Press the button to change between normal (NOR) and reverse (REV). Set up the one which makes the better link to the next band. 10. Switch between left and right channel to adjust the filter. Repeat steps 3–9 to adjust the filters of left and right. Press the FUNCTION button 3 for two seconds and you can set to PASS of MID H.P.F. Audio 32 Audio Adjustment 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 30). 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 18) creates a natural sound environment 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 reproduce 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 distortion 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 10 or less than 13 cm 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 separated. • 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. 33 Audio Adjustment Memory Functions of Adjusted Audio Menu (MEMO) This system allows the contents of the adjusted equalizer and network to be stored in memory as follows. The numbers in ( ) represent the numbers of the memory registers to be used. Note: • The Equalizer Menu’s equalizer curve, and the Network Menu’s Time alignment and Filter adjustment are simultaneously stored in memory. Memory (5) This memory stores the equalizer curve and network setup that have been adjusted to the desired position. The memory operations (storing, recalling, etc.) are carried out using each menu screen. In this manual, the memory operations that are common to all the menus are illustrated mainly using the screens for a 31 band graphic equalizer. Conduct the same operations on other menus. Note: • Pressing the RESET button of this unit will reset the Memory. Before pressing the RESET button, it is preferable to contact your dealer. Audio 34 Audio Adjustment Switching to Memory Mode Memory operations are conducted in the memory mode of each Audio Menu. Equalizer Menu 1. Open the cover of the...
