Subwoofer Newbie Looking for Recommendations

I have no direct experience, but I see you have no replies. Many panel speaker owners like Vandersteen 2Wq subs with their speakers. I do own these subs, and feel they are fast, extended and powerful.

Subwoofers offer some or all of the following connection options:

RCA sub-out from preamp to line-level RCA input on sub

Speaker-wire out from amp to speaker level inputs on sub

The Vandersteen uses a dedicated pair of speaker cables that attach to your amp speaker outputs along with the speaker cables to your mains. An in-line filter or crossover is inserted between the preamp output and the amp input (one for each channel).

thx; i have gotten a number of dealer recommendations to try the big REL's, like their G-2

Sorry, I didn't see this thread until today. I have heard Mag 20.1s paired with a pair of JL Fathom F212s. The sound was choherent and seamless. The sub was undetectable as a separate entity while providing strength, extension, and dynamics from 40 Hz down to 20 or slightly below.

JLs are crazy fast and linear over a broad frequency range. I'm not sure what your budget is, but JL's new E-series makes their subs more affordable than ever.

Yes, JL are fabulous and have to be the best out there. That's where my money will go.