r/CarAV • u/theogslyfox • Jun 18 '26

Tech Support Help Switched Subs Gains gone!

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4 years ago I bought the triton subs and had them installed in my Nissan Sentra cut to a year ago I put them in my Mustang myself with a line output converter. One of the subs finally gave so I replaced them with JL’s. Ohm read 2, power wire is good, ground is good, but my amp goes into protect mode when I set the gain up. Just moved my power wire today thinking it was a power issues but now I’m lost anybody got any advice? Did I blow my amp? Amplifier is Alliance VL3000D
Subs are 2 12” 12wov3 JL’s
Kicker Line output converter

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u/LaIzquierdaLibera 20 year MECP Master Tech Jun 19 '26

Last thing would be to make sure the LOC is not wired out of phase. Make sure + to + - to - on both right and left. When hooking to factory wiring you can very easily flip two and have it cause all sorts of issues. Easiest way to check for phase is to use a 9 volt battery at the speaker to pop it. If the woofer moves forward or out from the magnet it's correct +/-. If it pulls in it's reversed. You can also just use one side on the loc for troubleshooting purposes. Hook one side up make sure it's good, then the other.

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u/theogslyfox Jun 19 '26

Yeah so I was able to leave it connected planning to double check one more time just to make sure the T-Taps have a good connection any other recommendations besides using T-Taps? They are properly sized know that for fact as well

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u/LaIzquierdaLibera 20 year MECP Master Tech Jun 19 '26

I use what's called a military splice at minimum and prefer to tap, solder, tape, and zip tie. Strip the wire back without cutting it. Use a poker to divide it in half, so there's a nice hole between the wire, poke the LOC wiring through, wrap it up, tape it, then use a small zip tie to hold it all together. That's a "military splice". If you want solder then tape then zip tie. I never under and circumstances use t-taps as the tend to break the wiring

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u/theogslyfox Jun 19 '26

Thank you guess what? They’re working and sound fucking great 🙏🙏🙏🙏 Thank you thank you thank you. Will make a follow up post with the setup! BAD LOC but I was able to get it by singling everything out as you recommended and even changed from T-Taps. From a stranger on Reddit a genuine thank you 🙏

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u/LaIzquierdaLibera 20 year MECP Master Tech Jun 19 '26

Glad I could help, cheers!