How to hook up 2 amps?

[DirtyP 10+ year member]

How do I hook up two amps to one speaker?

Do I split the power cable and feed it to both amps?

What about rca's? Do i split them to? or do I have to run two sets?

My hu only has one rca in the back..

Whats the right freq to set my amp? It ranges from 50-250 if I put it at 200 is everything below 200 go to the sub? Or does it boost the 200 range?

Same with the hu is that a boost or where the interiors defer to the sub?

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[blackbonnie 5,000+ posts]

yes, split the power cable with a distribution block. you do not have to run two sets of rca's, you can just split them off. what kind of speaker are you looking to run the amps too. and i dont understand your frequency question. are you talking about a subsonic filter, or a hpf or lpf? what is it?

 

[fscker 10+ year member]

if i had to guess id say he was talking about the knob that says "freq" on it lol. set it at around 80

 

[DirtyP 10+ year member]

A old hx2 rockford it can take a good 500-1000 rms. The amps run 125 x 2 rms and 50x2 rms, Im running them bridged hoping for around 400 rms from the two.

Would there be a connector for the rca's like the power cable one.

Im not sure what it is it might be lpf its next to the gain.

Theres one on the head unit too which might be a filter. A low pass would let everything below that point thru right? And the filter would be a boost?