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Old 27th November 2012, 01:08 PM   #31
pra3718 is offline pra3718  India
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Quote:
Remove that loop in the signal routing. The Signal Return is half a mile from the signal hot !!!!!!!
Updated.

I tried couple of times powered ON/OFF with source and without source connected. The speaker says I have powered ON. And sometimes silence. ( I should not call it POP )

When I need complete silence, I will have to use Amp's MUTE pin. I stared googling.... and found following link. I don't understand whether this circuit would work or not. But yes I can copy it. What is your opinion ?

使用LM1876制作小型功放电路图 -音视频电路 -电子电路图网-电子工程师摇篮-专业电子电路发布站
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Old 17th January 2013, 12:12 PM   #32
Adi_007 is offline Adi_007  Romania
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is enought a 18+18Vac for a bridge LM1876 or the voltage is to hight?....thanks
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Old 18th January 2013, 06:53 AM   #33
pra3718 is offline pra3718  India
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is enought a 18+18Vac for a bridge LM1876 or the voltage is to hight?....thanks
LM3886 mono is good than bridge lm1876.
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Old 18th January 2013, 11:44 AM   #34
Adi_007 is offline Adi_007  Romania
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I allready have LM1876, from an old 5.1 system, and I want to use it.....
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Old 19th January 2013, 07:21 AM   #35
pra3718 is offline pra3718  India
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Then, 20VDC / 1.4 = 15-0-15 AC for 8Ohm load.
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Old 19th January 2013, 07:33 AM   #36
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The LM1876 is spec'd for 10V to 32V (20V-64V for single-supply) so 18-0-18 should be just about right for bridged use. I didn't run the math; it may be a tad high for effective 4-ohm load, but not so much to be a project killer IMO. Be extra generous when selecting a heat sink.
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