No onboard crossovers. Well, actually it has low pass switches, but that cuts all highs to the channel (and I need all four channels for the Polks).
I wound up running the sub off the + of Ch 1 and the - of Ch 2. Just need some way to block the high freq's from getting to it...
Bought a set of inline filters at Audio Express, but when I got them home I realized they were bass blockers. Hate returning stuff.
I'm open for suggestions, don't want to spend much more. Mama's pretty happy, since it's loud, but I'd prefer a little bit cleaner sound.