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Old 1st July 2009, 12:34 PM   #11
Electrons are yellow and more is better!
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Quote:
Originally posted by ambed
Which ground are better star or ground like in pcb??
Personally I would swap the OG and the connection for SG. Let the signal ground sniff at OG. Right now you'll draw amperes via the SG connection => voltage drop.
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Old 1st July 2009, 01:04 PM   #12
AndrewT is offline AndrewT  Scotland
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Quote:
Originally posted by peranders
Personally I would place the star ground under the output filter.
Peranders' suggestion is worth doing.
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Old 1st July 2009, 02:59 PM   #13
ambed is offline ambed  Latvia
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To signal ground I must put audio signal minus and speaker minus?
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Old 1st July 2009, 04:26 PM   #14
AndrewT is offline AndrewT  Scotland
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Quote:
Originally posted by ambed
To signal ground I must put audio signal minus and speaker minus?
Signal Ground is the return for the signal input.
It is not the return for the amp output.
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Old 1st July 2009, 08:00 PM   #15
ambed is offline ambed  Latvia
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Im sorry, but I dont understand what did you mean whit output filter??
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Old 1st July 2009, 09:41 PM   #16
AndrewT is offline AndrewT  Scotland
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the output filter is the pair of resistors that connect the amp output to the output terminal and to power ground.
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