Proficient M8, Installation And User Manual

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m8 REAR pANEL FEATURES

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Diagram 2  

M8 Rear Panel Features

REAR PANEL

3.  AUX IN - (

Two assignable RCA jacks) Connect to the line level audio output of an audio source to be fed to M8 channels 

switched to AUX L or AUX R on the Rear Panel. A mono source connected to the Left or Right AUX IN will be fed to any channel 

with the Channel Input switch set to AUX L (channels 1, 3, 5, 7) or AUX R (channels 2, 4, 6, 8). A stereo signal can be selectively 

routed by selecting both AUX L and AUX R for a given pair of channels (1/2, 3/4, 5/6, 7/8.)

4.  BUS LOOP - 

(Two RCA jacks) Connect to the BUS IN on up to four additional M8s to add additional rooms of amplified audio 

for the source connected to BUS IN. BUS LOOP is a fixed, (non-variable) line level audio output.

5.  BUS IN - 

(Two assignable RCA jacks) Connect to the line level audio output of an audio source such as an A/V receiver or mul-

tizone controller that is to be fed to multiple speaker pair, for multiroom audio expansion. A stereo source connected to BUS 

IN Left & Right will be fed to any M8 channel pair (1/2, 3/4, 5/6, 7/8) with the Channel Input switches set to BUS L and BUS R. A 

mono source connected to either the BUS L or BUS R IN can be fed to any channel by setting the Channel Input switch to BUS 

L or BUS R. Any source(s) mono or stereo, connected to the BUS IN will also be fed to the BUS LOOP output for connection of 

additional M8s.

6.  BRIDGED ON/OFF - 

(Four, two position switches) When set in the OFF position, the associated channels, (1/2, 3/4, 5/6, 7/8) 

will be set to normal mode, (standard power, discreet channel configuration, 35W/ch), with one speaker connected to each 

Speaker Terminal pair (1, 2, 3, 4, 5, 6, 7, 8). When set in the ON position, the associated pairs will be combined into a single 

channel for high power (70W/ch) output with one speaker connected to the now ‘bridged’ terminals, (1/2, 3/4, 5/6, 7/8). This 

allows high power output for large listening areas or driving high powered speakers.

7.  LEVEL -

 (Eight, knobs) Turn these knobs to independently raise or lower the volume of each channel. Turn counterclockwise 

(left) to lower the channel output, turn clockwise (right) to raise channel output. These controls can be used to balance the 

overall room to room speaker volume in the system, adjust balance for a stereo pair or set a maximum output level for a given 

channel.

8  LINE IN - 

(Eight, RCA jacks) Connect to the line level output of an audio source that is to be amplified as a mono channel (1, 2, 

3, 4, 5, 6, 7, 8), stereo pair (1/2, 3/4, 5/6, 7/8) or bridged stereo pair (1+2/3+4, 5+6/7+8). This allows the M8 to be configured as 

eight mono amplifiers, four normal power stereo amplifiers, or two high power stereo amplifiers.