Inter-m R-150 - Operational Modes; Speaker Impedance and Connections

R-150/R-300/R-500 Reference Series Amplifier
Operational Modes
Stereo Mode
In Stereo mode, channels A and B operate independently, with each channel feeding its
own amplifier circuit. In this mode, minimum speaker impedance per channel is 4.
Bridged Mono Mode
In Bridged Mono mode, both amplifier channels are bridged together and function as a
single-channel amplifier. Only the Channel 1 input is active, and only the Channel 1 Input
Attenuator controls the amp’s output. In this mode, minimum speaker impedance per
channel is 8.
Speaker Impedance and Connections
The minimum speaker impedance is wholly dependent on the operational mode of the
amplifier. It is critical that the minimum impedance not equal less than the
recommended impedance.
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