CHART FOUR

Sound poor on more than one source

One channel only

Check speaker connections and cables on bad 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 strip 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 contact.

No Improvement:

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

Separate preamp and power amplifier:

Turn off the amplifier and interchange interconnects, i.e., use right channel cable to connect left-channel preamp output to left power amp input, and vice versa. Turn on amplifier

Integrated preamp-power amplifier, sound poor on all sources:

Integrated amp is defective on one channel.

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 power amp input, and vice versa.

Sound poor on other channel:

That cable is defective.

Sound poor on same channel:

Power amplifier defective on that channel.

Sound poor on other channel:

One channel of preamp is defective.

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