Speaker Help

FWIW I have the following JBLs available.

Pair L300 Summit

Pair L222 Disco

Pair L100 Century

Pair L120 Aquarius Q wood with yellow grills

2 Pair Aquarius S109 

1 S1 woofer column matched to Aquarius

Local High Desert, CA pickup only. All but L300 could be picked up in Las Vegas.

Buyer to arrange shipping.

+1 on the Vandy 2wq subs with either the Vandy 2’s or Treos.  You may be able to find a pair of used Treos for $3500.  If so, I would get them first, and then save your money for the 2wq’s somewhere down the road.   I have a DNA-1 too,  and that is my plan – if you beat me to it, let me know how it sounds!

Keep away from rear ported speakers in that size room. That’s why I suggested the Spendor A5r ( 2 1/2 way ) with sealed woofers! I’ve owned that speaker and found it to be an excellent performer!

The A4s are rear ported but they really don’t need that much space. I heard them in a room similar to the OPs. They were only a couple feet from the walls and no bass boom or overhang whatsoever. They sound sort of like a ProAc/A5 love child.

What about Golden Ear Triton 2+s?  Based on what you say, this might be ideal.  Anything with a folded ribbon tweeter is worth a demo, IMHO.  The Triton Ones I heard were not at all bright, but still detailed.  The powered woofers will give you a lot of adjustability, and there is no rear port to make placement tricky.  They are a bit tall, but slim, so they don't have a huge footprint.  $3500/pr, MSRP.

@dpm2340 ,
The Vandy subs work with crossovers-
M5-hp or fixed impedance, they allow the amp to run more efficiently as well as offer a seamless transition between the main speakers and subs.
I own both a pair of 2w and 2wq's. I don't think you will find a better or less expensive way to get full frequency sound. Now that Vandersteen has introduced a new sub model, I would expect prices to fall. And, considering my 2w's are close to 20 years old and still functioning perfectly, I can attest to their build quality.
But, don't take my word, just visit a Vandy dealer.
B