CHART TWO

System has one source component only

Sound poor in one channel

Check speaker connections and cables on defective channel. Check that the wires are securely connected at the amplifier terminals and at the speaker terminals, and that no fine strands of wire are touching other terminals or the chassis. If there is supposed to be a wire or metal strap between two terminals on the speaker system, check to see that it is in place and the nuts or screws are tight. If there are level controls, rotate them vigorously to clean the contacts.

No improvement:

Connect left-channel speaker wires to right-channel speaker system and right-channel speaker wires to left-channel speaker system.

Sound OK:

Speaker connections or controls were at fault

Same speaker still sounds poor:

That speaker is defective.

Other speaker now sounds poor:

Both speakers are OK. Reconnect speakers to proper channels.

Integrated preamp-power amplifier:

Proceed as follows:

Separate preamp and power amplifier:

Turn off amplifier and interchange cables between preamp and amp, i.e., use right-channel interconnects from left-channel preamp output to left-channel amplifier input, and vice versa. Turn on amplifier.

Sound poor on other channel:

That cable is defective.

Check cable from source to preamp (or integrated amp) on defective channel. Turn off amplifier and interchange interconnect cable, i.e., use left-channel cable to connect right-channel output of source component to right-channel input of preamp or integhrated amp and vice versa. Turn on amp.

Sound is OK on both channels:

One cable was making poor contact. (Wiggle cables to determine if internally intermittent.)

Sound poor on same channel:

Cables OK. Connect cable from left-channel preamp output to right-channel amp input, and vice versa.

Sound poor on other channel:

Reconnect left-channel preamp output to left-channel power amp input and vice versa.

Sound poor on same channel:

Power amplifier defective on that channel

Sound OK on both channels:

One cable was making poor contact

Sound poor on other channel:

That cable is defective

Sound poor on same channel:

Connect cable from left-channel output of source to right-channel input of preamp or integrated amp, and vice versa

Sound poor on same channel:

Preamp or integrated amplifier is defective.

Sound poor on other channel:

Source component has one defective channel. Refer to the specific chart for that source.

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