Question about Bose 501V Speaker

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What causes crackling in speakers? I have Bose 501's and one of the 8 inch is crakling during lower tones.

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The usual cause is that excess power has been sent to the speaker cooking out the voice coil which will then rub the magnet pole pieces.
A less likely cause is contamination in the speaker.

Driving high power to the speaker will deform the voice coil. DO NOT believe what the manufacturer rates these speakers. You need to use an amplifier with no more capability of output than 1/4 the rating.

For the 501V speakers each side amp should be rated at no more than 25 Watts to each side.

Very loud bass notes at higer levels will make quick work of these speakers.

The cure is to have the speaker "re-coned" at a speaker repair facility AND use smaller amplifier driving them.

Posted on May 09, 2010

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