Martin Logan Abyss with Magnepan 1.6/QR's???

i own a pair of 1.6s. i would not use a sub for music. the loss of coherence is a problem.>>>

Sounds like you have a problem with your room. I've heard two subs (Vandersteen and REL) match well with the 1.6's. Vandersteen is my top pick after hearing a pair with the 1.6's. But I also heard the Martin Logan Abyss sub with the Martin Logan's and was impressed by it's tightness and speed. It might also be a good match for the Maggies.
If you're having coherence issues with a good sub against different driver types, it's almost always a room/placement problem and in some cases (and expense) can be tuned correctly.
From what I've heard it's unlikely that the new Magnepan sub will be of any use to the 1.6.

Cheers,

Robert

Duke, thanks for that reply. Very informative.
I'm leaning towards a single Vandersteen to start and then adding a second if I feel the need.
I'm not very concerned about coherence since I've had reasonable success even with the sluggish SVS sub.
Still, the sound of the Abyss and it's smaller cousin (Dyanamo) impressed me to consider them.

Cheers.