just got the other side of the pool going... I'm using SoundWare cubes which are a 2-way with a 6.5" driver. I have them on the B side.
First off, initially turned off the A side for only the SoundWare / Klipsch sub combo and it sounded great, really great actually, especially considering the Klipsch is taking everything like 100 hz down and passing the rest off. They were surprisingly crisp as well and with that sub, the low is great. W/o the sub (I tested it), they don't have any low bass response really, I think they only are rated for 90hz and you can tell. The mids and highs were very nice but if you cranked the low bass up, it tried to muddy the spkr some, but with the passive sub, that's all taken care of and sounds great, like I said.
Now, to the second part. Leaving B on, then turning on A (Voyager 7s), the 7s totally out drive the SoundWares. They have to be 25 to 30% louder. I'm using one of my stereo Onkyo recievers that doesn't have the volume adjustable Zone 2. But, when my new receiver gets here, the Zone 2 has it's own volume control, so hopefully that'll balance it out more. Another thought is that this Onkyo, being a little older, may have less watts on the B side, where as the new one will be equal. Hopefully this is it, either way the new receiver should be able to take care of the problem. I have a pair of 7's on the back porcas well, maybe I'll take them over and hook one up to see.
Lastly, unless you listen to some music with really low sub frequencies, I don't think an additional sub is really necessary with the 7s they have unbelievable bass response for their cabinet size and do not wash out at all with a lot of mid. In some cases, I can hardly tell my active sub is doing anything, then a song will come on with a lot of really low synthesized bass and then the active will show through and shine but the low of the 7s makes it completely seamless. I just can't get over how killer they are. If the other spkrs in the Voyager line have the same crispness and sound quality, then any one of the pairs would be highly recommended.
I have half a mind to swap out the SoundWares for some Voyager 5's or even 4s with the passive sub thats hooked up on that side. The 7s on my back porch were supposed to go on that B side but they're depth was too much to fit where I wanted them to go, so I went with the Soundware/sub combo to fill the gap.
Also, just fyi, the Klipsch sub is passive and can be set to mono or stereo, which lets you put the L and R stereo wires into it, it has an internal xover that splits the signal, takes the low-pass signal and pushes it through it's sub, then with output connectors, sends the hi-pass signal to the stereo speakers and it can easily be added to any system, all you need is a single pair of speaker wires (for mono) or 2 wires for a stereo signal.
Voyager 7 pic:
SoundWare pic:
Klipsch AW-800 sub: