Niles Audio SI-275 manual Multiple Speaker Loads, Installation Considerations

INSTALLATION CONSIDERATIONS

Multiple Speaker Loads

The SI-275 is stable into very low impedance loads. This means you can safely operate three pairs of 8 ohm speakers (a 2.67 ohm load) directly connected to the SI-275. Note that the SI-275 does not have on/off speaker switching built in. When the amplifier is on, so are all of the speakers.

Niles makes a number of different speaker selection and impedance matching systems. Speaker selection systems allow each pair of speakers to be turned on and off from your equipment location (or even via remote control). That way, you know that the speak- ers in the bedroom are off so you can avoid waking a sleeping spouse! These speak- er selectors provide an easy way to terminate all of the wires for more than three pairs. Testing and troubleshooting a new system is much easier with the individual room labels and on/off switches of a Niles speaker selection system. Additionally, Niles speaker selection systems offer impedance matching features which will allow you to connect up to ten pairs of speakers to your SI-275 amplifier.

Niles SI-275

Niles HDL-6 Speaker Selection System

AMPLIFIER

SPEAKER 6

SPEAKER 5

SPEAKER 4

SPEAKER 3

SPEAKER 2

SPEAKER 1

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

NILES

ON OFF

CONSTANT

Niles Audio

PROTECTION

Corporation, Inc.

Miami, Florida USA

Speaker selection systems allow each pair of speakers to be turned on and off from your equipment location (or even via remote control).

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