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Old 31st May 2005, 02:46 PM   #1
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Default Where can I get schematic of a minimalist LM3886 for sub use ?


Can someone pls provide me the link to a minimalist (Bridged/Parallel) schematic of LM3886 for sub use ?
I assume its done before.

Thanks in advance,
Audio enthusiast/hobbyist
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Old 31st May 2005, 03:07 PM   #2
mik is offline mik
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Old 31st May 2005, 03:43 PM   #3
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have a look at the app note at www.National.com
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Old 1st June 2005, 01:39 PM   #4
macboy is offline macboy  Canada
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Originally posted by BobEllis
have a look at the app note at www.National.com
Specifically, AN-1192.
Also don't forget about the Overture Design Guide speadsheet, and the how-to for it.

As a general rule of thumb, bridged amps work well for 8 ohm (or higher) loads, parallel amps work well for 4 ohm (or lower) loads, and a bridged-parallel can work great for 8 ohms or lower. "Or lower" implies you must parallel more chips to handle the increased load, but there is essentially no limit to the number that you can parallel.
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Old 1st June 2005, 03:11 PM   #5
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Why "minimalist" ? -- there is no benefit, only risk, to omitting a few decoupling capacitors -- the AN-1192 outline is simple and straightforward.
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