Subwoofer & pre amp


I like JL Audio subwoofer, had F113 for a brief period and thought it was better than Rel B1 & Stadium I used to own.

I now have a pre amp with only 1 set of output; JL only takes line leve input and no speaker level input. Short of using a Y-adaptor which will degrade sound more or less, will I be better off getting a Velodyne DD or Rel again? Either one will be physically larger than JL whcih could be an issue.

This sub will be 30% music & 70% HT, I normally don't use sub for music but like to have that option.
semi
thank you Perrew, the link is very useful.

Raul, I don't quite understand your comment. Velodyne has speaker level input which solves my problem, REL is known for its sophisticated speaker level input module and I know it will blend with speaker well. but if I want to stick with JL Audio, I think I either have to create my own voltage divider or I am out of luck.
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I was suggested by others to use Bryston, Pass, or ARC active crossover, all will "add" flavor to the sound which I am trying to avoid.

I think my best bet is to make a voltage divider if I want to stick with JL Audio. life will be easier if I just go with a Velodyne DD, but it's physically much larger.
I had custom Y connectors made up and they worked fine. Cross talk is interaction between the two channels, I can't see how using a y connecter will have any effect on this at all. Think about it, if you have 2 sets of outputs on your preamp they are branched from one circuit INSIDE the preamp. The Y connecter does exactly the same thing OUTSIDE the preamp. How does the current know the difference. Before I changed anything I would consult the preamp maker and get their take. There was a previous thread on this recently, you might look at that also.