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Old 13th April 2011, 01:33 PM   #1
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Default Studio Monitor Bi-Amp PCB

This is a single sided design
you will have to provide +\ - rails with good filter caps

It uses the LM3886
http://www.national.com/ds/LM/LM3886.pdf
or the or the LM2876
http://www.national.com/ds/LM/LM2876.pdf

In my application I found 40 watts worked great for the horn
with 68 kicking full range !

Attached is a PDF that you can use to make the PCB
it is scale mirrored

just print it on glossy color photo paper and then IRON the toner on to fresh clean copper for an etch resist !

It really works

radio shack has the Ferric Chloride for etching:
It's like 16 ounces for 9 bucks !
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Attached Files
File Type: pdf BiAMPSpkr.pdf (9.1 KB, 108 views)
File Type: pdf SCHEMATIC.pdf (8.4 KB, 117 views)
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Old 13th April 2011, 01:34 PM   #2
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this is the clean post
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Old 16th April 2011, 02:49 AM   #3
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This should be a Sticky
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Old 14th December 2014, 03:13 PM   #4
xaidi is offline xaidi  Pakistan
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Join Date: Dec 2013
Location: Lahore, Pakistan
Smile Studio Amp with lm3886 on ebay??

Guys i got lm3886 pcb for amp on ebay. Kit is mono. What do you think that will it work as studio monitors:
DC 20 28V LM3886TF 68W Sound Audio Amplifier Mono Digital Puissance Amp DIY Kit | eBay

Here is a power supply filtration pcb:
Rectifier Filter Power Supply PCB Board for LM3886TF TDA7293 Amplifier Board | eBay

Your answer will be appreciated
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