Only One Subwoofer working

[BrendonW34]

I can only get one speaker to hit at a time. I’m using a line out converter with rcas connected to it. When I unplug one rca cable one sub will hit (the left one no matter what rca cable I have plugged in) and when they’re both plugged in I get nothing out of them. Anyone know the problem I’m having?

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[Carlos1son]

Try another pair of rcas

 

[1aespinoza 10+ year member]

When I unplug one rca cable one sub will hit (the left one no matter what rca cable I have plugged in)

Is it a 2 channel amp or a mono amp?
The right side sub may be disconnected.

when they’re both plugged in I get nothing out of them.

I would suspect a polarity issue at the LOC inputs or a bad amp.

 

[metalheadjoe 10+ year member]

Definitly need more info to diagnose. Is it a mono or multi channel amp?

Try another pair of rcas

I somewhat agree with this. I can't think of any other way either channel works but both channels don't work except for a short in the signal. However, I enjoy problem solving and I loathe running wire, so I suggest some basic troubleshooting first.

Start with an ohmmeter. Each rca connection has two conductors: let's call them inners and outers.

Outers: You should have continuity between the two outers. You should have continuity between each outer and ground.

Inners: You should not have continuity between the two inners. You should not have continuity between either inner and ground.

Disconnect the cables from the amp, and measure both the cable side and the amp side.

 

[Jimi77 5,000+ posts]

I think it's either the LOC or improper wiring at the LOC.

 

[BrendonW34]

Definitly need more info to diagnose. Is it a mono or multi channel amp?

I somewhat agree with this. I can't think of any other way either channel works but both channels don't work except for a short in the signal. However, I enjoy problem solving and I loathe running wire, so I suggest some basic troubleshooting first.

Start with an ohmmeter. Each rca connection has two conductors: let's call them inners and outers.

Outers: You should have continuity between the two outers. You should have continuity between each outer and ground.

Inners: You should not have continuity between the two inners. You should not have continuity between either inner and ground.

Disconnect the cables from the amp, and measure both the cable side and the amp side.

It’s a mono block amp, and I’ve tried two sets of rcas now. I’ll try using the ohmmeter and see I guess. I know the amp is good and the speakers themselves are good as they’re all fairly new

 

[audiobaun 5,000+ posts]

Check your wiring at the LOC

 

[1aespinoza 10+ year member]

speakers themselves are good as they’re all fairly new

Maybe the subs are wired individually.