Octave V 70 Class A, Руководство пользователя

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6. ADVANCED FUNCTIONS
6.5 Front Channel
The Input labeled “Front Channel“ is coupled with a relay that bypasses the volume regulator. In
the “Front Channel” selector position, the V 70 Class A functions as a stereo amplifier. The overall
Gain of the V 70 Class A is reduced to 20dB in this position. The signal of the front channel input is
not available on the record output.
6.6 Regulated preamplifier output – Pre-Out
Using with an active subwoofer
The regulated preamplifier output is most commonly used to drive an active subwoofer. The Pre
Out is decoupled via a separate buffer to prevent the V 70 Class A against the load of the
subwoofer. The input impedance of the subwoofer is therefore non-critical.
The Pre Out does not have a separate muting function to prevent switch-on or switch-off plops from
the V 70 Class A. This is not normally needed, however, since the active crossover in the
subwoofer electronics will block unwanted DC and low frequency signals.