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2nd March 2009, 06:43 AM
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#1 |
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diyAudio Member
Join Date: Sep 2008
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Bridged or Parallel 100w LM3886?
So I'm gonna build the PA100 or BR100 off this datasheet:
http://www.national.com/an/AN/AN-1192.pdf I can't find much on which to choose though. Any strengths or weaknesses I should consider? Thanks! |
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2nd March 2009, 07:08 AM
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#2 |
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diyAudio Member
Join Date: May 2008
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If you don't even read the first page of that document, don't build either.
Bridged for 8 Ohm speakers. Parallel for 4 Ohm speakers.
__________________
If you've always done it like that, then it's probably wrong. (Henry Ford) |
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2nd March 2009, 06:23 PM
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#4 |
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diyAudio Member
Join Date: May 2008
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Parallel for 6 Ohm.
The ICs are specified for 4 to 8 Ohm loads. If you bridge them they 'see' half the impedance. A 6 Ohm speaker would mean a load of 3 Ohm for each IC, which is too low.
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If you've always done it like that, then it's probably wrong. (Henry Ford) |
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