MULTI-AMPLIFICATION
Multi-amplification (or multi-amping) uses separate p ower amplifiers to drive the
input to each section of the speaker. This reduces the interaction not only between
the upper and lower frequencies, but also between the left and right channels.
There are two types of multi-amped system.
speaker's internal cross-over.
speaker's cross-over directly. A 2-way speaker will therefore use 2 Forte amplifiers
and a 3-way speaker will use 3 Forte amplifiers. All the amplifiers on one channel
must be driven by the same signal. This is easily arranged as the Forte has two XLR
input connectors and these are wired in parallel.
directly to one Forte and then the second input on this unit is connected to one of
the inputs on next amplifier in that channel. Additional amplifiers are linked in the
same manner.
In the second type of multi-amped system, the speaker's internal cross-over is not
used. Each driver is driven directly by its own dedicated Forte amplifier. The input
signal is split into the bands appropriate for each driver using an electronic cross-
over such as the VIOLA Quartet and the outputs from this device are used to drive
each Forte. Splitting the input signal into the necessary bands at low level allows
distortion levels to be reduced compared to when a conventional cross-over is used.
For more information about the VIOLA Quartet please visit the VIOLA web site at
www.violalabs.com.
AC POWER CABLE CONNECTION
If the wall outlet you plan to use for the Forte has an on/off switch, check that it is
switched off.
Insert the supplied AC mains cord into the receptacle on the rear of the Forte and
ensure that it is pushed securely home.
Insert the other end of the mains cable securely into the mains outlet. Take care to
arrange the cable so that it is not bent sharply and that its weight will not pull it out
of either the mains outlet, or the receptacle on the rear of the Forte.
Do not switch the unit on yet.
SWITCHING ON FOR THE FIRST TIME
Check that all the signal cables in the system are correctly connected.
Select the appropriate input on the pre-amplifier and set the volume to minimum.
Switch on the pre-amplifier and your signal source, which we will assume is a CD
player.
Viola Forte Manual Rev 2
The most common type uses the
One amplifier is used to drive each section of the
The pre-amplifier is connected
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September 2005
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