Snell IC-B7S, Owner'S Manual

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8
BI-amplIfyIng
To achieve the highest level of performance, the speakers
can be bi-amplified. In this type of system two separate
amplifiers are used to drive the speakers. One amplifier
drives the midrange/tweeter array, while a second drives the
bass speakers. As with bi-wiring, the jumper straps must be
removed from the connection terminals. Then connect the
speakers as show in the illustration
note: Do not employ an external crossover of any sort,
whether passive or active. Doing so will interfere with the
phase and frequency response of the speakers. The inter-
nal crossover circuitry is an integral part of the speakers
and necessary to the proper response and function of its
D’Appolito array and overall performance.
note: It is imperative that the amplifiers used to bi-amplify
the speakers are identical.
bass amplifier
use equal
length wires
tweeter/midrange amplifier
Control SettIngS
There are two switches on the connection terminal cup that enable you to make slight adjust-
ments to the response of the speakers. They can be used to help you get the best possible
performance from your speakers in a variety of installation situations.
the Boundary Switch
In some situations it may be necessary to install
the speakers where they may not produce the
best overall sound balance. One example is when,
in order get the best sound image, the speakers
must be installed close to a corner, or any large
object that forms a corner such as a fireplace or
a large column. This can cause uneven response
in the upper bass and lower midrange which
produces sound that can be described as “thick”
or “heavy”. This is particularly noticeable in vocal
reproduction. The Boundary switch located above
the connection terminals can help control this.
If the speakers are located less than 12”-18” (30-45cm) from a corner or other large object,
try setting the switch to the Boundary position. Use source material that has a strong vocal
component to see if this setting produces smoother, more natural sound.
tweeter level Switch
The IC-B and IC-C series speakers have a three-position switch to adjust the output level of the
tweeter. In most rooms, the middle “0dB” position will produce the best sound. In rooms that
have plush carpeting and heavily upholstered furniture try the switch in the “+1dB” position. In
rooms that have more hard reflective surfaces, try the “-2dB” position.
+1dB
0 dB
- 2 dB
Normal
Boundary