wiring Question

[actlsub 10+ year member]

This might get confusing but see if u can follow. My car came with a stock sub in the rear. I wanted to use the signal line for this old sub for my new amp and sub. I found the line and cut it before it got to the stock amp. I had three lines, the remote, a positive line, and a negative line. The remote line i hooked up to the connector on the amp and thats fine. The high imput lines on my jbl amp were hard to connect. Therefore i had a single rca cable that i cut and spliced the high imput lines, positive and negative, to the separate wires of the single rca cable. Then i just plugged this single rca cable into the amp. However there are 4 imput lines for rca cables on the jbl amp. I know u can hook up two and run your sub witrh no problem, but i have mine with only one rca hooked up to it. Should i do something about this?? I have a feeling that this is not correct, however my sub does play with so far no apparent problems. Any ideas or suggestions???

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[ActionJ-01-Z71 10+ year member]

What is sounds like to me is you are just using 1 channel of a 4 channel amp. All is fine and nothing to worry about. What JBL amp is it? Whats the RMS per channel? I am wondering if you can use the other channel of the same side, bridge it and give your sub more power. Might try it if your sub can handle the power. Hope this helps.

AJ