What if the speaker becomes unplugged?

aletheian · 9th April 2006, 05:32 AM

Stupid question. I am rigging up a LM3886 amp to power a monitor speaker, and I was wondering what would heppen if the speaker cable were to become unplugged while running. Would the thing melt to slag, or would it simply stop the current flow and be fine? Just wondering if I should build in some protetion like a dummy load or something.

As I understand it, there is only danger in bridge mode.. which I am not using, but I want to be sure.

Thanx.

xplod1236 · 9th April 2006, 05:38 AM

The current would stop, and the amp would be fine. Even in bridge mode, if the speaker becomes unplugged, same scenario. The only danger in bridge mode is if a speaker output (either + or -) is shorted to ground. Then the amp would have a hard time driving current to a short circuit.

aletheian · 9th April 2006, 03:48 PM

Cool man. Thanx!

9th April 2006, 05:32 AM	#1
aletheian diyAudio Member Join Date: Apr 2004 Location: Philly	What if the speaker becomes unplugged? Stupid question. I am rigging up a LM3886 amp to power a monitor speaker, and I was wondering what would heppen if the speaker cable were to become unplugged while running. Would the thing melt to slag, or would it simply stop the current flow and be fine? Just wondering if I should build in some protetion like a dummy load or something. As I understand it, there is only danger in bridge mode.. which I am not using, but I want to be sure. Thanx. __________________ Heghlu'meH QaQ jajvam!

9th April 2006, 03:48 PM	#3
aletheian diyAudio Member Join Date: Apr 2004 Location: Philly	Cool man. Thanx! __________________ Heghlu'meH QaQ jajvam!

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9th April 2006, 05:38 AM	#2
xplod1236 diyAudio Member Join Date: Dec 2003 Location: On the couch	The current would stop, and the amp would be fine. Even in bridge mode, if the speaker becomes unplugged, same scenario. The only danger in bridge mode is if a speaker output (either + or -) is shorted to ground. Then the amp would have a hard time driving current to a short circuit.

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