Rockford Fosgate punch 801s distorted audio

[chipper]

Replaced with new components replaced protection circuit. Amp does power up but only 9640’s are with half signal. Audio is distorted. Need some help with further diagnostic on this amp…

 

[Perry Babin]

If you lift the diodes that connect the protection circuit to the drivers, do you get a clean signal?

Do you have a clean 4333 diagram? Mine are all illegible.

 

[chipper]

Lift diodes audio is still distorted.

 

[Perry Babin]

With a load on the output, post a photo of the scope display showing the distorted signal.

 

[AllegiantStar]

What kind of radio does this RockFord Fosgate amplifier have? High power or lower power head unit. The amplifier amplifies the exact replica of the head unit. So if you're on a premium sound that uses only single ended lower power head unit including factory amp, this will compound the problem even further. Starting off on the amplifier may be overlooking simple solutions first. Like why the distortion? From speakers.