Subwoofer meshes well with 2-channel?

I use dual subs (Dynaudio 12 inch) to augment my Dynaudio Temptations. I don't high pass the signal going to the Temps. I just add some low end 'filler' with the subs. It provides a much more realistic sound to things like kick drums, for example. The best way I can describe it is that it adds a 'fullness' to the trailing part of the notes. Without the subs, although the bass is good, the notes die too quickly to be realistic.

It is sooo much better with the subs, even though they are only augmenters (I LPF the signal to the subs at 40Hz).

The key is integration. For 2 channel I do not like using a crossover for the mains, but rather rolling the sub (or subs--which is much better) in at a low frequency (35 to 30 hz). Phase must be right which is easily calculated by the distance of the subs to the listener and the speakers to the listener (thus the subs must be the same distance or closer for best results). Continually variable phase is a big help.

We developed the sub-PARC to give the ultimate sub integration experience. Obviously, I'm biased here, but it is what we designed this beast for--and it is a beast. The amplifier took forever to get right because most amps just can't handle the demands of the LFE channel and still have the finess for a good 2 channel system. It also has parametrics which makes integration much better and gets rid of the issue of muddying up the sound.

Rives Sub-PARC

Ok, I made a statement few years ago and they all thought I was crazy. Now that at least one person shares my experiece with sub-phase problem I will repeat what I said then:
My main speakers are full range, VA Mahlers which are porter, and my subs are two rels, a stentor III and a stadium III. For months i tried to figur it out but i dont think i have any doubts now. By setting the speakers as large and augument them with the subs at 22hz and below, When I did that with the subs' phase set to 0 cancelled the speakers below 25hz while increasethe output above that frequency. For istance, when the phase is set to 180, there is a normal boost below 25hz and a decrease of output above that. I alway thought it was a phase interaction between the mains and the subs. Note that if you ask Sumiko which sub to add to the VA they will strongly suggest the stentor. Go figure...

I must add that it Is a shame because I like them both very much,speakers and subs, but just cannot use hi-level connection in my setup. I am thinking to replace the subs for months now, but I can't get over that.

Dawg, If your sub "virtually disappears" you are not home yet. You should never be able to localize a sub(s). Usually, this means it is rolling off too high. Variable phase is great if you don't have many placement options. Mr. Reynolds has most of the rest of it right. (Hi Bob)