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
speaker 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 connect-
ing 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 create 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 DESIGN CONSIDERATIONS
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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