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A Single-Zone System allows only one source to be heard throughout the house at a
given time. However, if the system is configured to be a Multi zone system it would
offer the household more flexibility. In a two-zone system, the children could watch
TV in surround sound while Mom and Dad read the paper and listen to music in
the living room.
Advantages of using the SI-1230 in a Single Zone System
In order to connect multiple pairs of speakers to a single stereo amplifier, they must
connect in parallel to offer the best sound quality and to allow the convenience of
an individual room volume control. Because parallel connections of multiple speak-
er pairs lower the overall impedance presented to an amplifier, damage may occur.
An impedance matching device will allow amplifiers to safely play multiple pairs of
speakers. However, the amount of power actually delivered to the speakers when all
of the speakers are playing simultaneously is very low. Typically a 100 watt stereo
amplifier with an impedance matching device will deliver about 5 watts to each
speaker in a system comprised of six pairs of eight ohm speakers. By connecting an
SI-1230 to the preamplifier outputs of your stereo receiver (or preamp) you dedicate
a robust 30 watts to each speaker in your multi-room system. Since each channel
has its own level control, you can compensate for architectural differences that cre-
ate sonic imbalances. In addition, you can fine tune the system so that when all of
the room volume controls are set to the loudest level, the large rooms and the small
rooms play at the same volume.
APPLICATIONS AND SYSTEM D ESIGN CON SIDERATIONS
6
CD PLAYER
RECEIVER
TAPE PLAYER VCR
TV
FAMILY ROOM LIVING ROOM
LISTENING ZONE 1
A Single-Zone System
allows only one source to
be heard throughout the
house at a given time.
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