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New subwoofer and amplifier not working

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Expand view Topic review: New subwoofer and amplifier not working

Re: New subwoofer and amplifier not working

by rodacollier » Wed Aug 29, 2018 6:12 pm

Can you just remove one of the rear speaker channels from the funky rca wiring setup ? You don’t need two channels into a mono sub channel.


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Re: New subwoofer and amplifier not working

by Aaronss99 » Wed Aug 29, 2018 12:50 pm

Chris from Washington wrote:Yes I was going to suggest that too, if you can find another audio source to feed into it. If it's still doing it, then you know it's the amp/sub.

If it works fine, then ya it's something in your cars wiring causing it.
I wired it up to my friends car using RCA leads today and it worked perfectly.
Its something to do with my wiring just got to figure out where to re wire it to. Thanks for your help

Re: New subwoofer and amplifier not working

by Chris from Washington » Tue Aug 28, 2018 2:48 pm

Aaronss99 wrote:That's the thing ive already tried a line output converter, im thinking its the wiring.
Im going to look into taking the signal from the head unit or from the factory subwoofers. maybe it will be stronger i dont really know.
Im also going to try powering it off of my friends head unit as he has RCA outputs so i can see if its a problem with my wiring or a fault with the amplifier.
Yes I was going to suggest that too, if you can find another audio source to feed into it. If it's still doing it, then you know it's the amp/sub.

If it works fine, then ya it's something in your cars wiring causing it.

Re: New subwoofer and amplifier not working

by Aaronss99 » Tue Aug 28, 2018 1:46 pm

That's the thing ive already tried a line output converter, im thinking its the wiring.
Im going to look into taking the signal from the head unit or from the factory subwoofers. maybe it will be stronger i dont really know.
Im also going to try powering it off of my friends head unit as he has RCA outputs so i can see if its a problem with my wiring or a fault with the amplifier.

Re: New subwoofer and amplifier not working

by Chris from Washington » Tue Aug 28, 2018 1:18 pm

hmm, I'm stumped.
it may almost be worth it to get a true line converter (they are cheap) and try that.
It seems to me that your signal is low, not sure if it's because the Amp isn't working right, or something in your wiring.

Re: New subwoofer and amplifier not working

by Aaronss99 » Tue Aug 28, 2018 12:05 pm

I think it just works the same was as a speaker level input on a regular amp but uses the RCA input to do so.
Yeah the subwoofer is 4 ohms and i have one.
The factory subs come off of the cars wiring ive taken some photos.
i disconnected the connectors and played some music nothing changed but the front door speakers also turned off as well as the under seat subs. the connector is 4 pin so im guessing two of witch are the positive and negative for the front door speakers.
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Re: New subwoofer and amplifier not working

by Chris from Washington » Tue Aug 28, 2018 10:38 am

not super familiar with how their speaker level to RCA thing works.

The sub woofer, you have 1 and it's 4 ohm.
If so, that would mean you're putting 500 watts to the amp. It should have some sound and be moving.

So I'm wondering about the factory subs. how are they wired in relation to your new amp/sub? any chance could could unhook those completely for a test to see if it makes any difference?

Re: New subwoofer and amplifier not working

by Aaronss99 » Tue Aug 28, 2018 9:44 am

Hello thanks for all the replies, i have taken some photos.
It does play some bass but very little you can only tell if you touch the subwoofer.
I dont know if this has any relevance but my car has stock subwoofers below the seats.
On pioneers website it says "Speaker line input sensor-connect your existing OEM unit without the hassle of add-on adapters" so im guessing it doesn't have a direct speaker level input it just detects an input and adjusts it self.

I cut into both rear speakers and crimped on some speaker wire and then ran that to an adaptor that came with my amp, allowing me to plug it straight into the RCA input
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Re: New subwoofer and amplifier not working

by Chris from Washington » Tue Aug 28, 2018 8:01 am

Welcome to the forum, so from how you describe it. It sounds like the sub does play some music?

I'm a little confused by this part
" as I'm using the stock head unit I have cut into the the rear speaker wires and ran a speaker wire to an adaptor allowing me to plug them into the RCA input on my amp. The amp accepts speaker wire input so no need for a low output connector."

Are you using the speaker level inputs on the amp, or RCA?

Re: New subwoofer and amplifier not working

by rodacollier » Mon Aug 27, 2018 7:32 am

Need more details on how the speaker wires are coming into the amp. Assuming you have the switches set right on the amp, it sounds like the input signal is not sufficient.


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