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Overview: The Russound SS-4.2 Speaker Selector allows you to
switch up to four speaker pairs connected to a stereo amplifier. Each pair of
speakers can be turned on or off through individual front panel switches. It
provides switchable built-in impedance matching, or can be used with impedance
matching volume control. The SS-4.2 is designed for use with 8-ohm loudspeakers.
Impedance Matching Protection: When used with multiple speaker pairs,
the impedance matching circuitry lets you operate the system safely with
automatic overload protection. When connecting more than one pair of 8 ohm
speakers to the speaker selector, the rear panel impedance switch should be
placed in the "In" position. If using impedance matching volume controls (such
LPTx-2), the switch should be in the "Bypass" position.
Amplifier Requirements: When using internal impedance matching (switch
set to "In") a 4-ohm stable amplifier is required. When using external impedance
matching volume controls (switch set to "Bypass"), a 4 to 8 ohm stable amplifier
may be used. You should use only the Amplifier "A" speaker outputs when the
SS-4.2 is used. "B" speaker outputs should not be used.
Connections: The SS-4.2 features spring clip speaker terminals that
can accommodate up to 12-gauge wire. For most applications, stranded 16-gauge
speaker wire is recommended. For runs of over 100 feet, 14-gauge is recommended,
while 12-gauge can be used for runs of up to 200 feet.
Performance: The speaker selector is designed for use with amplifiers
with a power output of up to 100 watts per channel RMS (200 watts per channel peak.
The frequency response is 20Hz to 20kHz (+/- 0dB).
Room Labels: The SS-4.2 comes with a sheet of non-adhesive room labels
which slide into a groove in the front panel. A total of 52 labels and 8 blanks