Saturday, April 12, 2014

INFINITY ref-475a - 4,3,2 CHANNEL POWER AMPLIFIER - CONNECTION DIAGRAM


CONNECTIONS
The 475a can be set up for stereo 4-channel, 3-channel or bridged 2-channel operation.
NOTE:  Minimum speaker impedance for stereo operation is 2 ohms. Minimum speaker impedance for bridged operation is 4 ohms.
Not all possible applications are shown here.Some applications should include a separate subwoofer driven by an additional amplifier.

475a connected to full-range speakers. Note crossover and channel assignment settings.
475a connected to four satellite speakers and used in conjunction with an additional subwoofer amplifier or powered sub-woofer.  Note:  crossover and channel assignment settings.
475a connected in tri-mode to a subwoofer and a pair of satellite speakers. Note:  crossover and channel assignment settings.
ref-475a connected in bridge mode to a pair of full-range speakers. Note crossover and channel assignment setting.
POWER AMPLIFIER SCHEMATIC (Only one channel is shown.  All the others are similar)