[legion]

The stereo in my 951 has a small issue: the subwoofers are way too loud.

My head unit has outputs for the four front channels that run to a five-channel amp (I don't use the sub channel on that amp), and two sub channels that run to a separate two-channel sub amp. I have the input sensitivity and output of the sub amp turned all the way down.

I can turn down the sub channel from the head unit, but if I disconnect the battery for maintenance (which seems a frequent occurence lately), the subs are back to being very loud.

I stopped by the local stereo shop and they told me I needed an "RCA level adjuster" (which they don't carry). Essentially what I understand as something that I can plug two RCA cables into from the head unit, adjust the volume of both channels with a single knob, and plug two more RCA cables into that run to the sub amp.

I've searched Google, Circuit City, Best Buy, Crutchfield, Amazon, and Radio Shack looking for this mythical device. I can't find it anywhere. Any ideas?