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(tone controls)
To compensate for adverse influences on reproduction
quality caused by your listening room, or imperfect
loudspeaker positioning, the amplifier is fitted with an
active, infinitely variable tone control system. The
settings can be adjusted separately for each channel, to
allow for asymmetric positioning of the left and right
speakers. The aim should be to set the controls in such
a way that the two loudspeakers produce the closest
approximation to identical sound.
The tone controls are deliberately designed to affect only
the low frequencies below 300 Hz (BASS) and the high
frequencies above 4000 Hz (TREBLE); this avoids
unwanted coloration in the critical mid-range sound.
When the tone controls are at centre, the frequency
•
response is linear.
Rotating the controls clockwise increases the bass or
•
treble.
Rotating the controls anti-clockwise reduces the bass
•
or treble.
Volume and balance
(balance setting)
The
control enables you to vary the level
between left and right channels, e.g. to cope with asym-
metric speaker locations.
To avoid any adverse effect on the sound, the balance
range is limited to +0,6 dB / -8,0 dB. It is never desirable
to reduce the volume of one stereo channel to zero.
The level of amplification is the same on both
•
channels when the control is at the centre position.
Rotating the control clockwise offsets the stereo
•
centre to the right.
Rotating the control anti-clockwise offsets the stereo
•
centre to the left.
Infinitely variable adjustment of the playback level,
employing a high-quality, ultra close-tolerance quadruple
potentiometer.
Rotating the control clockwise increases the volume.
Turning the control anti-clockwise decreases the volume.
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