passive preamp sub output?

Gregm is not confused, and unless I am, the active crossover idea won't help. Kr4 did motivate me to think a bit further, and the sub has speaker-level inputs, so presumably I could just run speaker cable from the amp to the sub. However, something makes me think that the line level connection would be better quality. True?..and if so, am I better off with the adapters Kr4 mentions, or does their inclusion offset any sonic advantage to using line level vs. speaker level? Thanks guys, Ben

I researched this same subject and went with the view that high level is actually better and the impedance of the sub's plate amp is high enough not to present difficulties to the main amp.
Therefore, simply connect a second run of wire from the amp to the sub high level.
Works for me.

Okay, now tell me this. Let's say I run a second run of wire from my amp to the sub high level, what if I run a line level connector from the pre I'm using for my ht system...I'd have two inputs to the sub, one for stereo use, one for ht use, any harm done? what happens if I accidentally run stereo and ht at the same time? my, said pooh, this stuff sure is complicated! ben