Yamaha R-S300BL User Manual

■ Using the PURE DIRECT switch

Routes input signals from your audio sources so that the 
input signals bypass the BASS, TREBLE, BALANCE and 
LOUDNESS controls, thus eliminating any alterations to 
the audio signals and creating the purest possible sound.
The PURE DIRECT indicator lights up and the front panel 
display turns off after a few seconds.

• The BASS, TREBLE, BALANCE, and LOUDNESS controls 

do not function while the PURE DIRECT feature is turned on.

• This setting is retained even if you turn off this unit.

■ Adjusting the BASS and TREBLE 

The BASS and TREBLE controls adjust high and low 
frequency response.
The center position produces a flat response.

BASS
When you feel there is not enough bass (low frequency 
sound), rotate clockwise to boost. When you feel there is 
too much bass, rotate counterclockwise to suppress.
Control range: –10 dB to +10 dB (20 Hz)

TREBLE
When you feel there is not enough treble (high frequency 
sound), rotate clockwise to boost. When you feel there is 
too much treble, rotate counterclockwise to suppress.
Control range: –10 dB to +10 dB (20 kHz)

■ Adjusting the BALANCE control

The BALANCE control adjusts the sound output balance 
of the left and right speakers to compensate for sound 
imbalance caused by speaker locations or listening room 
conditions.