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In Reply to: RE: How easy is it to blow speakers? posted by Les Anderson on July 23, 2016 at 11:47:22
There is something called Xmax, the throw of the woofers coil. If your amp for what ever reason is exceeding the cone/coils limits it can or will be slamming against the housing. Eventually bad things will happen if that is the case.
You gotta too much juice!
Follow Ups:
Xmax generally refers to the amount of linear excursion, before the coil is too far out of the gap and the speaker distorts. There is also a mechanical Xmax, but it's not specified as often.
Damage from over-excursion can happen at low frequencies, but burning the voice coil can happen at any frequency.
I had a friend (that was years ago!) in the late 70's that bought a new big Sansui monster integrated amp. Unfortunately the speakers he ordered with the amp didn't arrive yet. So he cranked up some Zepplin on his old speakers and you could actually hear the coil banging against the housing. Eventually it did stop. Unfortunately his speakers didn't arrive for another few weeks. It sucks when you're 18 and (with joint in hand) you're sitting there with a new toy and unable to play with it.Eventually the coil rub with trash it.
Edits: 07/24/16
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