Pioneer KEH-3900R - Manual (Page 21)

Treble Adjustment (TRE)
You can adjust a Treble level as desired.
1. Press the AUDIO button and select the Treble mode (TRE) in the Audio
Menu.
Loudness Adjustment (LOUD)
The Loudness function compensates for deficiencies in the low and high sound ranges at
low volume.
1. Press the AUDIO button and select the Loudness mode (LOUD) in the Audio
Menu.
“LOUD”
2. Switch the Loudness function
ON/OFF with the
5/∞ but-
tons.
2. Boost or attenuate the treble
level with the
5/∞ buttons.
The display shows “+6” – “–6”
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