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28th December 2004, 03:09 PM
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#1 |
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diyAudio Member
Join Date: Jun 2003
Location: Connecticut
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chip amp idle current
How much power do MOSFET chip amps draw with no load? I'm talking about the bridged circuits that get used in typical car stereo's (14 v supply).
Some head units get mighty hot when running a full set of 4 speakers. I'm curious how much heat would be generated if the speakers were left unconnected. Any rules of thumb, or specs on typical chips?
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dave |
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28th December 2004, 03:30 PM
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#2 |
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diyAudio Member
Join Date: Oct 2002
Location: Santa Cruz, CA
 
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very little
Hi,
The typical amp in a headunit is class a/b and might use 50-75ma per channel with no load. Which should make it stone cold... Stuart |
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