Couldn't the OP use tape out and control the volume from the sub as he/she wants different levels depending on volume?
Using Tape Out from Preamp for powered sub woofer.
Hi, It may sound stupid, but can a Tape-Out from Preamp be used for powered Sub Woofer. I'm looking at constant bass from sub. So more bass at lower volume and relatively less bass at higher volume. Are there any technical disadvantages if the Tape-out is used for power subwoofer?