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Old 24th February 2008, 03:56 PM   #1
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Default Perry or someone please explain

I'm trying to set up a car amp for home use. I will link two photo's of the inside of the amp but heres what I found....36.5VAC on one leg of the output devices that goes to the driver card. One leg is 0.0V and the last leg is 35VAC that goes to the copper/ bronze color coils. would i have to put the power into the output devices into the leg's that the coils feed?

http://i227.photobucket.com/albums/d...2/DCP_3490.jpg

http://i227.photobucket.com/albums/d...2/DCP_3489.jpg
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Old 24th February 2008, 04:49 PM   #2
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That looks like a giant class D monoblock! At least what I can see of it.

The problem with some of the larger, newer monoblocks is multiple secondaries at the torridal(s) And if I were to prep that for home usage I would just buy a transformer that satisfies all secondary voltages, remove the torridal(s) and insert the secondaries of my transformer in place of the old torridal secondaries.

You should take some pictures that show the entire amp, the brand and model would be good too. And try and get a clear picture of the torridal secondaries where they enter the board so we can see if other rails are supplied there.

- Matt
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Old 24th February 2008, 05:14 PM   #3
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The amp pictured is a Audiobahn A18001DT but the one i will be using is a aAudiobahn A12001dt here is the complete photos

http://i227.photobucket.com/albums/d...2/DCP_3492.jpg

http://i227.photobucket.com/albums/d...2/DCP_3491.jpg
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Old 24th February 2008, 05:55 PM   #4
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So would this work or not? the operating voltage of this toroid? i think there called is 35VAC with it out the Out put devices have no power if i put 35VAC to the portion of the board it should in theory work or no? Edit the power went from 35VAC with the toroid in to 46VAC with it out?

http://i227.photobucket.com/albums/d...2/DCP_3498.jpg

http://i227.photobucket.com/albums/d...2/DCP_3497.jpg
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Old 24th February 2008, 06:28 PM   #5
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WHOW WHOW WHOW !!! you have removed one of the class D amp filters ...
Put it back in...It filters out the the high frequency switching signal so it will not burn up your speaker...

Please re install that coil its part of the amp circuit, not the power supply... Sorry if I sound blunt I mean only to help you....
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Old 24th February 2008, 06:36 PM   #6
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haha thanks its back it but im lost ive hooked up car amps to aux power supplys but the run of of DC not AC...I need to know where to put the power to the board.
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Old 24th February 2008, 06:51 PM   #7
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You can't simply connect a split DC supply to this amplifier to use it in your home.

If you look at the large power transformer on the left, you'll see it has 3 extra windings. These are used to generate voltage for the low voltage supply as well as the higher_than_rail drive voltage. The driver voltage circuit needs a high frequency square wave to produce the required output.

If you were going to use this in the home, the main rail voltage could be supplied by a LARGE power transformer. The regulated voltage could be supplied by a relatively small transformer. The driver voltage would require that you either drive a high frequency signal into the circuit or that you build a floating power supply and connect it to the driver circuit.
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Old 24th February 2008, 07:32 PM   #8
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hmmm i see perry do you know of any semi easy ways to build a 14-15VDC PSU from wall current to have the most amps as possible like per say 110 amps?
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Old 24th February 2008, 08:28 PM   #9
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I have the 90 amp 13 volt version on my bench.

OOPPS My bad Perry is correct the model pictured is 7 amp I have the 90 amp 13 volt version on the same frame. But this will give you a idea of what your looking for in a power supply


Thanks Perry
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File Type: jpg dsc_2882.jpg (44.5 KB, 127 views)
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Old 24th February 2008, 08:31 PM   #10
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Those are 7 amp supplies.
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