Rockford PC-3125-H

[megael9]

Can some one recommend a cross reference for the power supply MOSFETs of this amp?
The originals are MTP75N05HD.
Thanks in advance

 

[Perry Babin]

I use IRF3205s in virtually every Rockford amp I repair. You can leave the gate resistors at 10 ohms. Up to 47 ohms will work.

 

[seankane]

On a side not you had better change all six of the outputs that were previously replaced. It appears they have mismatched date codes. All the date codes must match.

 

[megael9]

Seankane,
There was three shorter mosfets on one shoulder, 2 IRF6215, and one IRF3415, does that means I have to replace all 6 mosfets for that shoulder?
Thank you.

 

[seankane]

Seankane,
There was three shorter mosfets on one shoulder, 2 IRF6215, and one IRF3415, does that means I have to replace all 6 mosfets for that shoulder?
Thank you.

You must change all six, so that the three of each have matching date codes. The amp will likely work now, but wont be reliable without matching dates on the devices.