Amp going into protect mode

[panteramatt 10+ year member]

I just finished up installing my helix 5 channel amp, components, and 2 sundown 10's in my truck. Tried adjusting the gain and could even get it to half on just the subs and it'll go into protect mode and shut off. I have all adjustments in my head unit and amp set to 0. Pulled my multimeter out and when a big bass note hits the voltage drops to around 11 so that's my problem. Thought my alternator was shot but on my way to work today it never dropped below 13.5 and the amp still shutoof after I turned up the gain a little. Do I have to install a big capacitor or do I have to do the big 3? What else do I look for?

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[wew lad 5,000+ posts]

Recently had the same problem, you're getting loss due to wiring and your ground check the voltage before and after your amp wiring

 

[panteramatt 10+ year member]

I did that and the amp was lower than my battery. So I has the ground on my seats chassis. I ground down the paint more and now it reads the same.

 

[AnthonyO 10+ year member]

Thats always my first go to, Bad Ground. I can't tell you how many problems I have seen just from having a bad ground.

 

[panteramatt 10+ year member]

So where's a better spot for the ground? Or could I run another wire to my ground to test my ground connection?

 

[wew lad 5,000+ posts]

So where's a better spot for the ground? Or could I run another wire to my ground to test my ground connection?

the floor pan of the vehicle is better, use a bolt and get it nice and tight. seat bolts arent always the best option