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Old 10th August 2011, 11:12 PM   #1
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Default Audiopipe AP10001D

Outputs check good in this amp..

When i power it up and place black meter probe on output - terminal and
red probe on + output terminal i get - 2.62 volts ..

They guy said if he hooks up a sub to it it makes the sub flutter ..


Any ideas??
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Old 10th August 2011, 11:52 PM   #2
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Does it make a speaker flutter on the bench?

If so, does it act differently with the RCAs connected/disconnected?
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Old 11th August 2011, 01:38 AM   #3
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it pushes the cone of the speaker outward with and without rcas plugged in

I cant get it to flutter but i can tell theres DC present by hooking a test speaker up.
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Old 11th August 2011, 02:11 AM   #4
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Is there DC on the RCA shields?

Place the black meter probe on the amplifier's ground terminal.
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Old 11th August 2011, 02:20 AM   #5
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No voltage at all on the rca shields
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Old 11th August 2011, 02:36 AM   #6
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Is there DC on the output pins of any of the op-amps?
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Old 11th August 2011, 02:43 AM   #7
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U3 TLO74C Pin 16 has 2.37 volts on it ...


All other op-amps test fine
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Old 11th August 2011, 02:45 AM   #8
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What's the DC voltage on pins 12 and 13?

P.S. only 14 pins.
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Old 11th August 2011, 02:47 AM   #9
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Sorry meant pin 14..


Pin 12:0
Pin 13:0
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Old 11th August 2011, 02:49 AM   #10
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More resolution is needed. Post the actual meter reading (3 decimal places).
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