Yamaha RX-V870 Owner's Manual - Page 16

Adjusting the BALANCE control Adjust the balance of the output volume to the left and right speakers to compensate for sound imbalance caused by speaker location or listening room conditions. BALANCE Selecting the SPEAKER system Because one or two speaker systems (as front speakers) can be connected to this unit, the SPEAKERS switches allow you to select speaker system A or B, or both at once. SPEAKERS Note This control is effective only for the sound from the front speakers. Adjusting the BASS and TREBLE controls BASS TREBLE Using the TONE BYPASS switch Press this switch to revert instantly to the flat states of the BASS and TREBLE controls without changing the setting of these controls. BASS : Turn this clockwise to increase (or counterclockwise to decrease) the low frequency response. TREBLE : Turn this clockwise to increase (or counterclockwise to decrease) the high frequency response. Note These controls are effective only for the sound from the front speakers. Using the BASS EXTENSION switch You can boost bass frequency response by setting this switch to the "ON" position. This switch is effective only on the sound from the front speakers. When you listen with headphones Connect the headphones to the PHONES jack. You can listen to the main sound through headphones. When listening with headphones privately, set both the SPEAKERS A and B switches to the OFF position. PHONES 16