145Chapter 6 Combining and Using Pioneer AV EquipmentAdjusting trebleYou can adjust the cut-off frequency and the Treble level.➲ In FRONT1 and FRONT2 modes, treble adjustment affects only the front output: rear outputcannot be adjusted.1 Press 5 or ∞ to select “TREBLE” from the AUDIO MENU, and press A.MENU(AUDIO) button.2 Press 5 or ∞ to adjust the treble level.Each press of 5 or ∞ increases or decreases the bass level. +6 - -6 is displayed as thelevel is increased or decreased.3 Select the desired frequency with 2222 / 3333.2.5k - 4k - 6.3k - 10k (Hz)Adjusting loudnessLoudness compensates for deficiencies in the low- and high-sound ranges at low volume.1 Press 5 or ∞ to select “LOUDNESS” from the AUDIO MENU, and press A.MENU(AUDIO) button.2 Press 5 to turn loudness on.Loudness level (e.g., LOUDNESS:ON/MODE:MID) appears in the display.3 Press 2 or 3 to select the level.LOW - MID - HIGH4 Press ∞ to turn loudness off.Using subwoofer outputPioneer AV Head Unit (AVH-P6400CD or AVH-P6400) is equipped with a subwoofer outputwhich can be switched on or off.1 Press 5 or ∞ to select “SUB WOOFER” from the AUDIO MENU, and press A.MENU(AUDIO) button.When the subwoofer controller setting is S.W. CONTROL:EXTERNAL, you cannotselect SUB WOOFER.2 Press 3 to turn subwoofer output on.➲ You can turn off subwoofer output by pressing 2222. If you do not set to “ON”, you cannotselect “PHASE”, “LEVEL” or “FREQUENCY”.3 Press 5 or ∞ to select the item you want to adjust.
