subwoofers and panels don't mix

Stereo subs are the best and crossing them over where the mains leave off is a must. Having them in the same plane as the midrange driver panel and facing forward will also increase the seemlessness. Placing the subs on a support platform also improves the definition.

Has anyone experimented with horn subs?
I have recently acquired some Soundlab M1's and still have a long way to go to get the total system working properly. One aspect is the bass weight. Soundlabs are reviewed as having very good realistic bass, so a sub should not be necessary.
However before I got the Soundlabs I was going to try out a Klipschorn bass unit that I managed to get hold of - my theory is that it would make the ideal sub. Only a horn has the transient speed and "air" to keep up with a panel????
Any responses?

Only a horn has the transient speed and "air" to keep up with a panel????
Any responses?

A horn subwoofer would need a huge chamber. If it were folded and made of concrete (so the walls did not introduce distortion) then it might work but we are talking dimensions of 30 feet or so. If you are thinking ported or TL design then the transient response will not be as good as a sealed box.

What about the Wilson Benesch Torus "infrasonic generator?"

I have yet to hear them, but from what I understand the push pull design and extremely low mass (half an ounce) of the 18" driver supposedly makes it extremely fast, and would seem like a perfect match for stats.

Can anyone comment on them?

You would need a massive BLH sub. Or 2 stay clear of klipsch w bin yuck. Or maybe consider a 31.5 in super woofer in ported cabinet. The Fostex 31.5 in was amazing transient reponce very low excursions massive cone area so matchs up great with planars or stats.