sub cutting out

[On3Hundr3dProof 19]

hey guys. i know a buddy of mine whos got an RE SXX on an SAE-1200d 220a OEM series dc power alt 2 out of 3 big 3 optima yellowtop and 0ga to the amp and hes having issues with his sub cutting out randomly. the amp isnt going into protection and when it cuts out its only momentarily. i noticed he was only running one set of 12ga from the amp to the sub and told him he should step that up. my only other thoughts would be a ground problem but im not sure what else it could be. any advice would be appreciated.

[ssh 924]

What's his voltage dropping to at full tilt?

How was the gain set, or is it simply maxed out?

[On3Hundr3dProof 19]

gain is at half. there may be a voltage drop but i cant tell you by how much..hes trying to get a digital voltage gauge

[ssh 924]

gain is at half. there may be a voltage drop but i cant tell you by how much..hes trying to get a digital voltage gauge

Is it only cutting out at high listening volume?

Very well could be a ground issue.

[KyleBrown 121]

short in the RCA's too.

is the amp on the box?