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Old 26th December 2012, 02:12 AM   #1
yakusa is offline yakusa  United States
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Default pa150 help

i just finish putting everything together and need some advice to make sure everything is ok.

This is the psu that I'm using, i checked with the multimeter and the measurements were right on 35v. i notice that when i turned it off one rail stays on longer than the other about 20 to 30 secs.

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also, when i connected the amp modules to do the measurements i get 18.2 mv and 10.5 mv.

i will appreciate any help.

regards,

Alex
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Old 26th December 2012, 07:42 PM   #2
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How is your 0 Volt output referenced to your 0 Volt input?
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Old 27th December 2012, 11:54 AM   #3
AndrewT is offline AndrewT  Scotland
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no schematic?
How do we get to see the problem?
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regards Andrew T.
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Old 2nd January 2013, 01:21 PM   #4
yakusa is offline yakusa  United States
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Here is the schematic.
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Old 2nd January 2013, 01:30 PM   #5
yakusa is offline yakusa  United States
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I went back and did read more treats on this. and with the awesome help from Bob (bcmbob) i got one chanel to 0.01 mV but the other one the best i could was 5.2 mV. I resolve the problem on the psu by switching the transformer mains. now after playing for at least for 30 min the heat sink did not get as hot as before.

Last edited by yakusa; 2nd January 2013 at 01:33 PM.
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Old 2nd January 2013, 01:38 PM   #6
yakusa is offline yakusa  United States
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Also, how does C10 affect the audio quality, is listed as 10 uf, but Alex used 15uf and i've seen 4.7 uf too.
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