Subwoofer recommendation for Maggie 1.6 QR

You may want to consider the Tycus from Art of Sound. Very fast and detailed.

I have been very pleased with the REL Storm. Plays very well to the Maggie's strengths.

Your Maggies will sound better, for sure, with a sub. I shopped, listened, compared may subs and wound up with the Sunfire Architectural sub. Designed for two channel listening. Front firing woofer. It's a crying shame you don't hear about this sub, enough, on the 'gon. Fast, tight, great extension, small, and very powerful. A jazzman's delight. They have the Architectural Signature, too. 12" rather than 10" woofer. Can be found nicely discounted. Lists for $1400. I love mine. happy hunting. warren

A pair of Vandersteen 2Wq subs. I currently use this with my MG 3.6R. If space is an issue, you may also consider the Definitive Tech Super Cube. I have heard this sub with the 1.6. Very close to the performance of the Vandersteen. Have fun experimenting...

If the room is small, I suggest the Velodyne SPL-800. Larger rooms go with the SPL-1000 or 1200. I tried many and the SPL's sounded and integrated the best. I wasn't surprised to see Magnapan uses a pair of SPL-800's in their surround muic system. I use a single with great results.
Good Luck,
Curt