Octave V110, Руководство пользователя

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6. ADVANCED FUNCTIONS
6.5. Front Channel Input - Bypass function
The Input labeled “Front Channel“ is coupled with a relay that bypasses the volume regulator. In
the “Front Channel” selector position, the V 110 functions as a stereo amplifier. The overall Gain of
the V 110 is reduced to 26dB in this position. The signal of the front channel input is not available
on the record output.
6.6. Regulated preamplifier output – Pre-Out
6.6.1. Using with a 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 110 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 110. This is not normally needed, however, since the active crossover in the subwoofer
electronics will block unwanted DC and low frequency signals.
6.6.2. Using the V 110 in bi-amped systems
Another option provided by the adjustable Pre Out is bi-amping via the V 110's internal
preamplifier. The V 110 would ideally handle the mid/high portion of a bi-amping setup, using a
second power amplifier fitted with its own volume control to take care of the bass. In this
configuration, switch-on/switch-off noises from the Pre Out may prove to be a problem. The best
way to deal with this is to make sure switching on the V 110 at first, then the external power
amplifier - and when switching the units off do such in the reverse order.
If you do not have a power amplifier with a separate volume control, you should match the input
sensitivities (or gain) of each amplifier. You will normally find the gain listed in dB in the amplifier's
specification. The figures for each power amplifier should be within 2 dB of each other.
The ideal gain of the external power amplifier is 25 dB / +/-2 dB
.
Configuration of the V 110 in bi-amped systems