tonywinga,
We have conversed in other threads regarding the bass of wilson vs Thiel. I am still surprised you are wanting of bass owning two subs.
A few thoughts, have you measured your room? You could have a hole in the bass. I struggle with a 10db dip from 60-70hz in my room regardless of whether I ran the mains full range or highpass the subs. I really had to move my speakers around to get rid of it. Could be as simple as a db meter and a test tone track streamed.
I started with my mains the audiophile way, way out into the room. 6’ off the rear wall and my subs 39” off from the driver face. At one time I had the speakers 7.5’ off the front wall and the sub right beside the mains and also tried the subs 24” off the front wall with the mains at 7.5’. So my point is I have had them all over the room. But I measured each setup and the 60-70hz dip was persistent.
Then I set my mains only 24” (from the driver face) off the front wall… and got flat bass. It sounded ok too but a hair chesty/boxy. I then broke out the calculator and started figuring out distance and wave lengths I was canceling to put some science behind it. My final solution was to put the subs at 24” off the wall and my mains at 43.5” off the wall. Using a 60hz crossover point puts the long waves out of the subs and the shorter waves out of the mains. 43’ seems to be enough not to cancel at 60hz-90hz. Between 24” and 6.5’ is no man’s land where bass does odd stuff. Don’t forget the ceiling and wall distance sum too and they are normally fixed.
Here is the kicker. I bought a pair of Revel 228be about a month ago and we’ll they have the exact same issue. Dip in the bass between 60-70hz. After a week of moving them around I also ended up with the subs 24” off the front wall and the speakers 43.5 off the front wall. The room wins every time. You could buy new speakers to end up having the same bass issues you have now.
Another example:
I alway struggled for bass slam with my 2.4 in my main listening room. A few weeks ago I put the 2.4s in the living room for the wife (she loves them) and I placed them 24” off the wall so the kids don’t bump into them running around playing and guess what? Crazy bass, I mean wow wall shaking bass, with slam I have never heard come out of a thiel. I am talking subwoofer type bass. So I took out the db meter and ran some sweeps. Flat bass to 40hz and down 6db at 33hz. No dip at all between 40-90hz. The room is 26’x19’x8’ with the speakers centered on the long wall and the rear wall opens to the rest of the house. Lots of furniture in the room and kids toys everywhere, total mess, no extra charge for room “treatments” lol. Again just comes down to the room.
These days I have grown somewhat tired of chasing gear. At this point I am looking at spending most of my further budget on the room.