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Old 17th March 2010, 05:27 AM   #1
diyAudio Member
Join Date: Sep 2006
Default Ppi a600

The power supplyu in this amp is blown. The fets in it are SMP25N06.

Is there a good replacement (sub) for theese?

Also what ohm resistors are they using for the gates. Since evryone in this amp is toast
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Old 17th March 2010, 06:19 AM   #2
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Join Date: Nov 2003
Location: Louisiana
The gate resistors are 100 ohms, most likely. I'd try the IRFZ44. The IRFZ34 is generally a drop-in replacement for the 25N06s but The Z44 should be OK. If you use the Z44s, monitor the temperature of the power supply FETs for about a minute after replacing them. If they remain cool, you shouldn't have to make any other changes.
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Old 20th March 2010, 10:47 PM   #3
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Join Date: Sep 2006
The NDP7060's wouldnt work would they?
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Old 21st March 2010, 01:44 AM   #4
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Join Date: Nov 2003
Location: Louisiana
If I'm not mistaken, the driver IC drives the FETs directly. I don't know if it can reliably drive 8 7060s. Long term reliably could be a problem.
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