Subs nly work when head is on TUNER setting

treepete
10+ year member

Junior Member
Hey,

My subs work when I listen to the radio tuner, but they do not work when I switch the source to cd or aux or USB input.

Does anyone know why that might happen?

When I adjust the 'subwoofer level" on the head unit, the subs dont change level at all.

The only time I can get them to work is if I actually increase the "bass level" on the head.

I suspect that my sub is underpowered or RCA is plugged into the wrong preouts.

Either that or each source has its own subwoofer output level, and the radio is the highest.

The headunit is a kenwood MP438U

anyone have thoughts on that?

thanks,

Pete

 
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treepete

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