Thanks for the welcome
As far as what we can do for the drivers, for the SSD and Q line we have been doing many IB setups. The changes are to the suspension (being softer), the coil (usually customers want a single coil in 2 or 4 Ohm for ease of wiring), and machining the gaps a little wider to adjust the Qts.
For standard HT use, we can soften the suspension a little (since most are setup for car use in the first place) depending on power, enclosure size, and tuning. Use a different dustcap to increase or decrease moving mass vs the standard version. And more recently for the 18" drivers (which seem to be the most popular sellers) use a new cone/compound that decreases moving mass by about 70 grams over the standard cone.
I am currently testing 2 new IB specific subs. First is a 15" with good efficiency, low Fs, 24mm of Xmax (suspension limited), and approx 300W rating (to get to Xmax at 20Hz). The second is a new 18" the uses a smaller, tighter motor than the Q, a 2 layer coil, 30mm of Xmax, lighter new cone, 600W rating (to get to Xmax at 20Hz). Both will have very reasonable price points, and will have special HTS pricing.
I am also doing a few more tweaks to the Q series with a different single 4 Ohm 2 layer copper coil (most of our subs use aluminum coils) that has simialr specs to the standard version, but a lower qts.
We are constantly tinkering and trying new things. When something seems useful, we will post it up. Ill be working on some stickies for the forum over the next few weeks for what HT specific tweaks and subs we have available.
Thanks,
Scott