Troubleshooting

No sound on one channel

BusMatrix DIP switch is not in the correct position. Check your configuration worksheet for the correct setting and verify.

You could have a short circuit or loose wire at speaker or amplifier terminals. Check that connections are secure and that there are no loose strands of wire crossing from the positive to the negative terminal at the back of the amplifier and the speaker.

Audio cable to dedicated input is bad. Connect the non-working channel input to another cable that is known to be good.

Bridging Switch is in the wrong position. Check your configuration worksheet for the correct setting and verify.

The thermal protection circuit has operated because of overheating caused by overdriving or inadequate ventilation.

No sound on some or all channels

BusMatrix DIP switches are not in the correct positions. Check your configuration worksheet and verify all settings.

Audio cable to the main bus inputs is bad. Connect the non-working channel input to another cable that is known to be good.

Some or all of the internal amplifier fuses are blown.

(Return the amplifier to your dealer for service).

Hum from all of the speakers

Hum may be caused by a ground loop between two components in the system. To test for a ground loop, try reversing the ac plugs of each of the components in the system, that has non-polarized plugs.

Check for faulty cables, faulty source material, an ungrounded phono system, cable TV feed or a defective component.

Amp will not turn on

AC power cord must be plugged into a working outlet.

Master power switch must be on.

Test that the AC power receptacle is working. If the outlet tests O.K., the internal fuses are blown. Return the amplifier to your dealer for service.

Sound is distorted on one or all of the channels at normal volumes

BusMatrix DIP switches are not in the correct positions. Check your configuration worksheet and verify all settings.

Normal volume cannot be reached

One of the internal amplifier fuses is blown.

(Return the amplifier to your dealer for service).

Bass sound is weak and the stereo image is “phasey” sounding in one room

Check that the bridging switch is “Off”. If two adjacent channels are connected normally but the bridging switch is set to the “Bridged” position, the two speakers will play out of phase with each other.

The loudspeakers are wired out of phase. Reverse the connections at the back of one speaker.