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7. ADVANCED FUNCTIONS
7.3. Adjustable preamplifier output – Pre-out
7.3.1. Using with a subwoofer
The adjustable preamplifier output is most commonly used to drive an active stereo subwoofer.
This must be equipped with its own volume control. The Pre Out is decoupled via a separate buffer
to prevent the subwoofer from affecting the V 80 SE. The input impedance of the subwoofer is
therefore uncritical.
The Pre Out does not have a separate muting function to prevent switch-on or switch-off noises
from the V 80 SE. This is not normally needed, however, since the active crossover in the
subwoofer electronics will block unwanted DC and low frequency signals.
7.3.2. Using the V 80 SE in bi-amped systems – application 2
The V 80 SE as a central control unit
Another option provided by the adjustable Pre Out is Bi-Amping via the V 80 SE's internal
preamplifier. The V 80 SE would ideally handle the mid/high portion of a bi-amped setup, using a
second power amplifier fitted with its own volume control to take care of the bass. In this
configuration, switch-on/off noises from the Pre Out may prove to be a problem. The best way to
deal with this is to make sure you switch the V 80 SE on before the external power amplifier and
then switch the units off in 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 2dB of each other.
The ideal gain of the external power amplifier is 32 dB +
/-2 dB.
Possible configurations of the V 80 SE in bi-amped systems
Option 2: V 80 SE as central control unit
Summary of Contents for V 80 SE
Page 1: ...V 80 SE Owner s Manual English ...
Page 14: ...15 3 GETTING STARTED 3 7 Connection possibilities overview ...
Page 47: ...48 ...
