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NILES AUDIO CORPORATION – 1-800-BUY-HIFI – 1-760-710-0992
2 Channel, BridgaBle Power amPlifiers
SySTEm dESIGN CONSIdERATIONS
SpEAkER COmpATIBILITy
A single channel (not bridged) of the SI-1230 is capable of driving a 4 ohm
impedance speaker load. No more than two 8 ohm speakers or no more than
one 4-6 ohm speaker can be safely connected to a single channel. Proper
ventilation of the SI-1230 is critical when driving lower impedance loads. If the
SI-1230 is not properly ventilated, the protection circuits may activate and shut
off the channel at higher volume levels (for more information on proper amplier
placement, see Installation Considerations on page 15).
A channel pair that has been BRIDGED is capable of driving an impedance load
of 8 ohms. Proper ventilation of the SI-1230 is critical when driving a 8 ohm load
with bridged channels. If the SI-1230 is not properly ventilated, the protection
circuits may activate and shut off the channel at higher volume levels (for more
information on proper amplier placement, see Installation Considerations on
page 15).
When designing your system, try to specify 6-8 ohm speakers (Niles offers a
complete line of inwall, in-ceiling, outdoor and home theater loudspeakers with
all models rated from 6-8 ohms).
CABLE ANd wIRE
Because the SI-1230 has many connections on the rear panel (see Figure
12), it is important that you correctly label all of the input cables and speaker
wires. Label the cables and wires with their destination or source, rather than
the SI-1230 terminal to which they are connected. This will make it easier to
recongure your system in the future.
The SI-1230 connects to your sources via shielded line level audio cables with
RCA connectors. Use high quality cables with your Niles amplier for the lowest
possible noise and best overall performance. Your Niles dealer can recommend
the proper cable.
The SI-1230 connects to your speakers using two conductor speaker wire.
For most applications, we recommend you use 16 or 18 gauge wire. For
wiring runs longer than 80 feet, we recommend 14 gauge wire. The SI-1230’s
high-quality, gold-plated 5-way binding posts will accommodate up to 12-gauge
wire. Attaching banana plugs to the wire will enable the connection of larger
wire sizes.