Subs not working

[EFighter808]

I’ve been out of the sound game since high school so it’s been about 29 years since I did. But I recently installed subs into my truck and had a fairly new used 12” Rockford subs, a brand new boss amp (I know it’s a generic brand but tried to get the quickest amp I could find) and a china made stereo deck because it was the only one I could find that had the screen that I wanted. https://www.ebay.com/itm/3560118245...d=link&campid=5335951755&toolid=20001&mkevt=1 this deck came with a wire harness specific for my truck. Also no instructions were provided and I basically had to plug in whatever fit correctly.

I know for sure I hooked up all sound systems correctly from the subs all the way to the deck. The deck only has one green RCA cable that’s labeled subwoofer. I bought a y split and hooked it up and nothing to the subs. I also found 2 RCA cables that was labeled audio out L and audio out R, which I hooked it up to but still nothing.

The stereo is working completely fine and I changed the sound setting to have the subwoofers play but still nothing. Does anyone know how I can check to see everything after the deck is working properly? I checked ohms on the subs and both were reading 4 ohms. So the woofers itself should play some sort of sound.

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[huberoy123 10+ year member]

Have you considered getting your signal from a rear speaker, run it to your amplifier then to the sub?


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[EFighter808]

I didn’t even know you could do that but thinking of it makes sense. I’ll give it a try. Thanks

 

[chillin 10+ year member]

Take a pic of the amp settings. Gain, filters,etc

 

[RobGMN Premium Member]

Have you considered getting your signal from a rear speaker, run it to your amplifier then to the sub?


View attachment 61178?

Unless those have a hidden resistance circuit (or your sub amp has high-level inputs), not the way to go.
You'd want an LOC.

That said, troubleshooting in the process of elimination. There are a limited number of things that can be wrong.
Keep it simple. Verify power at amp, and that the amp is powered up.

Do you have a phone (or DAP, radio, computer, even walkman) that has a 1/8" headphone jack?
If so, now get a 1/8"-to-RCA cable. Connect it to your player and to the amp. Set your amp gains to 75%. Play some tunes and slowly turn up the volume.
If you get sound, the amp is likely OK.

Now, you check wiring. Do a visual, but also swap in other cables.
Then you check all the settings on your head unit.

Report back here and people will offer more help.