Anyone using the Transistor Research LabsM 225's

The Intuitive design Gamma Summit is the final and most advanced of the Summit series which consists of a 2 unit, granite clad system. The top is the 2-way speaker using a custom Israeli Morel 7" midbass, T-line loaded. The soft-dome tweeter's identity is a secret, but is also modded and TL loaded.

1st order Xover with inductor and capacitor made by ID.

The base or stand is sand filled. 6 Stillpoints are used per side: 3 between speaker and stand, and 3 between stand and a 3" thick, 12"x18" Granite slab. Total weight per side is almost 300 lbs.

The speakers must be laser leveled for max performance and are excruciatingly sensitive to placement. 8' between speakers, 10 to my ears. Typically no toe-in, but sometimes I do a few degrees for a different perspective.

Both Paul and Dale use master tapes for voicing. I don't know if this is a factor in what turns out to be seductive synergy between amp and speaker. Impossible to know, of course, if this synergy is optimum without other speaker comparisons.

I'm the guilty culprit for suggesting to Agear about combining Intuitive Designs Gammas with TRL Samsons, this combo has to be more than outstanding, me thinks Interlochen has a superb sounding rig that's off the map !

It sounds pretty good Pat, but there is quite a bit to be done. Sources, room treatment, subwoofer. Though these speakers have usable output down to 30 Hz, I want the infrasonics fleshed out. MDHoover uses a Rel with great success, but I'll probably build a sub(s).

I turned my fireplace into a sub by installing a 1.5" thick baffle and 2 - 10" Eclipse auto subs some years ago. It's been gathering dust for a while so I'm going to break out the Behringer gear and bring it back to life.

The FP and chimney are 15' long, resulting in a beautiful resonance around 20Hz, but also at ~40 which corresponds to the rooms major mode. That has to be nulled with EQ, thus Behringer DCX and DEQ 2496.
Dave