Multiple Speaker Loads
The SI-245 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-245. Note that the SI-245 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-245 amplifier.
INST
ALLA
TION CONSIDERA
TIONS
7
SPEAKER 6
L+
L-
R-
R+
AMPLIFIER
L+
L-
R-
R+
L+
L-
R-
R+
L+
L-
R-
R+
L+
L-
R-
R+
L+
L-
R-
R+
SPEAKER 5
SPEAKER 4
SPEAKER 3
SPEAKER 2
L+
L-
R-
R+
SPEAKER 1
CONSTANT
PROTECTION
ON OFF
Niles Audio
Corporation, Inc.
Miami, Florida USA
NILES
Niles SI-245
Niles HDL-6 Speaker Selection System
Speaker selection systems allow each pair of speakers to be turned on and off from your
equipment location.
