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Old 29th April 2012, 02:16 AM   #1
RiLoWa is offline RiLoWa  United States
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Default Rockford Fosgate Punch 150S

When I received this amp it had IRF540's at all four output locations.

Doesn't it use an IRF540 and an IRF9540, one each per channel instead?
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Old 29th April 2012, 02:45 AM   #2
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I think you're right. If I'm not mistaken, Q115 and Q215 are the IRF540s. If that's true, the center legs of both outputs in each channel will be directly connected.
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Old 29th April 2012, 02:55 AM   #3
RiLoWa is offline RiLoWa  United States
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Yes center legs are connected together like you said.

The MPSA56 drives the 540's and the MPSA06 drives the 9540's then.
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