Sub plays at same level no matter the volume!?!?!?

[TrakDay 10+ year member]

So I hooked everything up last night and I am having an issue.

Basically if I turn the volume all the way down my sub continues to play at the exact same level as it does with the volume cranked way up. Worts part is it's not like the sub is even hitting hard at the level it is stuck at... I have a 2011 GMC with factory Nav/Bose. I am using a line out converter for the RCA adapter. Could I possibly have something wrong on the line out? What would cause this problem. The line out converter is tapped on the speaker wire right after the deck, before the factory Bose amp.

What could cause this problem!?

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[tymoto21 10+ year member]

i would say your loc is bad, check your wires again and if they are right get a new loc

rear speakers should be blue, lt blue and brown, yellow behind the deck

 

[ahole-ic]

I would tap in after the amplifier. Your results will be more predictable. The head unit might have fixed outputs with a seperate wire to control the gain of the amp. If this is the case, you can replace loc's until the end of time and they will always have the same volume. The reason I believe this is, if you turn the volume ALL THE WAY DOWN, the loc should not be seeing ANYTHING unless it is tapped into fixed outputs.

 

[Vossy 10+ year member]

Turn your LOC converter down, they're rated for a certain amount of wattage and that stock bose could be putting out more than it should.

The cranked LOC and a high gain could make that problem.

Just a thought idk

 

[TrakDay 10+ year member]

I would tap in after the amplifier. Your results will be more predictable. The head unit might have fixed outputs with a seperate wire to control the gain of the amp. If this is the case, you can replace loc's until the end of time and they will always have the same volume. The reason I believe this is, if you turn the volume ALL THE WAY DOWN, the loc should not be seeing ANYTHING unless it is tapped into fixed outputs.

This is what I was beginning to think... Crap... well that means I have to take the fricken center console out. Or do you have any tips on that for me?

 

[ahole-ic]

This is what I was beginning to think... Crap... well that means I have to take the fricken center console out. Or do you have any tips on that for me?

There really aren't any shortcuts and I wouldn't advise them if there were because you would probably end up regretting it. Take your time on this one because the quality of the rest of your system depends on it. This is the cornerstone.

 

[tymoto21 10+ year member]

behind the radio is fine to get it, ive done it ceveral times like that on bose systems, behind the radio is un filtered as long as you used checked to make sure you had the right wires i told you (dmm....), and most loc's are rated for 44 watt inputs which the bose amp puts out about 35. i dont think its the gain on the loc because even at no input you have noise on your wires.

when preouts on a deck go bad all you get out of the amp is a single tone that doesnt go off with no volume, so on the loc i think it is just bad, or you have your wires tapped into a bad source

 

[TrakDay 10+ year member]

I have the proper wires at the deck for the rear speakers... I just checked that. I just can't control the sub with the volume. Looks like my next step is pulling the center console and getting the LOC after the amp. Anyone know how to get a center console out of a 08 + GMC Sierra

 

[TrakDay 10+ year member]

Got it... I wired it into the sub wires after the bose amp. This SA-12 is impressive as hell!