Bob
Look at the Rythmik F12SE. You can buy a pair for less than $2k shipped. Hook them up via speaker level. Vandersteen subs have been hooked up using this method for decades as have REL subwoofers. When I got my pair of Rythmik's to replace the Vandersteen's I tried them first using the preamp outs and then switched back to the speaker level connection I was more comfortable with. They can be "dialed in" without the use of an extra external crossover.
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Jack
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