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 Post subject: Speaker/Subwoofer damage
PostPosted: 24 Nov 2009, 17:58 
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Joined: 17 Nov 2009, 08:20
Posts: 8
i know if you have, say a 500 watt amp to a 100 watt speaker, it will get damaged. due to the voice coil failing, The same way if a 100 amp was powering a 500w speaker.

But what if you had a 500w amp to a 500w speaker but played music quietly for long periods of time, will this also damage the speaker?

I'm building a subwoofer for low volume levels but have bought a 500 watt rms sub
Thanks

Dan


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PostPosted: 24 Nov 2009, 22:42 
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Joined: 28 May 2008, 21:53
Posts: 4580
Location: Winnipeg, CANADA
Hi Dan, you are mistaken.

The speakers voice coil should only get damaged if you exceed the power rating of the speaker. You are fine to use any size of amplifier with any speaker. Just don't turn up the amp beyond what the speaker can handle.
Cheers

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PostPosted: 25 Nov 2009, 06:34 
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Joined: 17 Nov 2009, 08:20
Posts: 8
Ok so I'll be safe using my setup, But my question was will a powerful amp and powerful sub get damaged by low listening levels.


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PostPosted: 25 Nov 2009, 19:28 
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Joined: 23 Apr 2009, 16:23
Posts: 26
Location: North Idaho, USA
:shock:
I drive 15 watt speakers with a 380watt and 120 watt RMS amp. The way you burn out a speaker is by putting more power *heat* to a voice coil than it can dissipate. The insulation on the windings would become so hot it would melt causing a short, thus causing the ohm load on the amp to drop, thus the amp puts out even more power and poof.. burned up speaker.

Gio answered your question, just in not as many words. your question "will this also damage the speaker?" is redundant because of reasoning and explained by Gio and I. Driving a 500watt speaker at a low wattage = low amount of heat needed to be dissipated by the voice coil, thus no burn out.


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