Sub not hitting hard, possibly subwoofer wire?

[sc300jz 10+ year member]

I'm running JL 500/1v2 with a 12w3v3 with a line out converter(Scosche Loc80 2-Channel Adjustable Lineout Converter).

I've tested with a brand new LOC, different RCA cables, checked the radio fuses. Tried amp-rca-3.5mmjack - music player and it hits how it usually does. Everything is hooked up correctly since it still hits hard when plugged straight into my phone.

I've tested pretty much all I could now I am thinking it could possibly be my subwoofer wires. I wrapped them in electric tape, but possibly they could of had touched. I remember I tried to adjust the bass/treble/mids but it went haywire. I have yet to test out the voltage, what volts should it be at?

Is it possibly the that the subwoofer wires short circuit and that is the reason why the subwoofer does not hit as loud? If they touched they wouldn't be showing any signs of bumping though right? Also if I was to tap into one of the door speaker wires would that still be the same as tapping into the subwoofer wires?

Thanks for your time.

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[keep_hope_alive Premium Member]

i'm not following what you wrapped in tape. terminology varies.

pics will help. pics of all wiring and connections.

note the inputs to the LOC can be such that the left and right are out of phase. if you disconnect one RCA does it get louder? if so, reverse polarity on the LOC inputs.

 

[jsluss17 10+ year member]

i think you're probably expecting a little too much outta your sub. what kinda box is it in?

 

[audiobaun 5,000+ posts]

If the sub wires touched + and -, the amp should go into protective mode/shut down..I would do as Keep_Hope_Alive has stated,see whats going on first..Ive never liked using LOCs, Id rather just rip the existing HU out, and put an after market one in, to make things easier/sound much better..check wiring of your sub as well..for what ohms your amplifier is stabilized for..Subwoofer Wiring Diagrams

 

[sc300jz 10+ year member]

Sorry, seems like I wasn't clear enough.

Keep_hope_alive- I used the OEM subwwoofer wires and I hooked it up to the LOC and I just used electric tape to cover the expose metal so they wouldn't touch. I reversed the RCA cables as well and is still the same and if one is taken out its just softer.

jsluss- No i am not expecting too much, when I first got it a few months ago it would rattle my trunk with ease and now its pathetically low. Its in some ported box, not exactly sure how it was built.

aduiobaun: Honestly I dont like using LOC as well, but since I already have factory navigation and my AC unit is built into the navi. Either I have to buy a doubledin AND a AC unit from a non-navi car or just run a LOC.

Just to clarify, the sub/amp alone are fine and it is working like normal.

But when I connect it to the car the output of the subwoofer is extremely low.

I'll try to get pictures whenever I am free.