Accuphase C-280 - Page 7

[12] COMPENSATOR
before playing a record and when
changing to a different program
source.
Loudness Compensator
These selectors are used to compen-
sate for unevenness in perceived
acoustic energy across the audible
frequency range at low volume levels.
As the volume is lowered, the human
ear becomes less sensitive to very
low and high frequencies. These
selectors are provided to compensate
for this shortcoming. In the 1
setting, frequencies around 100Hz are
boosted +3dB; in the 2 setting, fre-
quencies around 100Hz are boosted
+8dB and frequencies around 20kHz are
boosted +6dB. An indicator imme-
diately over selector 1 or 2 lights
to show when either mode has been
activated. A second indicator is pro-
vided in the central indicator sec-
tion to show that one of these
selectors is pressed even when the
sub-panel door is closed.
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