2009-06-12 21:28:48

by R.F. Burns

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Subject: PC speaker

Is it possible to write a kernel module which, when loaded, will blow
the PC speaker?


2009-06-12 21:40:27

by Valdis Klētnieks

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Subject: Re: PC speaker

On Fri, 12 Jun 2009 17:28:40 EDT, "R.F. Burns" said:
> Is it possible to write a kernel module which, when loaded, will blow
> the PC speaker?

Highly unlikely, as the circuitry *driving* the speaker is probably hard-wired
to not output more than the speaker coils can handle.

You *might* be able to find a way to generate a nasty square wave that will
over time stress the speaker cone - but a "*pow* it's dead"? Probably not.

If your speaker just fried, it's more likely a short or other hardware or
mechanical defect.



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2009-06-13 00:10:51

by John Sheu

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Subject: Re: PC speaker

2009/6/12 <[email protected]>
> You *might* be able to find a way to generate a nasty square wave that will
> over time stress the speaker cone - but a "*pow* it's dead"? Probably not.

It's my impression that they're usually piezos these days anyways.

-John Sheu