Originally Posted by
Bruce Watson
I'm not Dave, but I think that is what he's telling you, yes.
I think what you're missing is the laws of physics. It's not linear. The bottom end is much more difficult to deal with than the mids and highs.
Some reasons for that include that in real rooms, the optimal location for the speakers that produce the mids and highs are not the same as the optimal location for the speakers that produce the lows. The reason for this is that the mids and higher frequencies are what establish the sound stage and let you localize instruments and singers in that sound stage. Most people can't localize any sound below around 80 Hz, so it doesn't matter from the sound stage point of view where the subs are. At the same time, all real rooms suffer from room mode problems which are (usually) profoundly effected by the location of the subs, but not so much by the location of the mids/highs. And the location directly under the mid/high driver is not helpful in mitigating problems with room modes. Not at all helpful.
So while I get what you want and why you want it, you should know that the laws of physics aren't in your favor and in fact work against you.
And I haven't even touched on passive vs. active drivers, and why active is so much better for subs. And why servo subs are so much better than non-servo subs, and that servo systems require an integrated amp (active) to work.
It's true that other suppliers will give you what you say you want. And it's true that their smaller offerings that separate their mids/highs from their subs usually sound better. And now I've explained as best I can (flawed as I know it is) why that is.
I think Dave is heading in exactly the right direction with his designs so far. I look forward to where he puts his energy going forward.