Sdcampbell and Bigtee are both guys who are strong advocates of stereo 2wq's and use them to great advantage. Vandersteen himself, as Scott mentioned advocates this as well. Eventually I want to add a second sub myself.
Your question about crossing over too high indicates that you need to study a bit more about how the thing works. I use one sub and it sounds great providing you choose the correct filter value and placement. Two 2Wq's may be significantly better as Scott indicates, but one is SIGNIFICANTLY better than none in many room situations. Your #2 confuses me as to what you are trying to say? The response is quite predictable using Vandersteens method and providing again as Scott mentioned the main speakers have predictable response low enough. No you can't mate a Vandersteen sub well with say, Spica TC 50's(tied that, nuf said) or other small speakers that will give you a suck out or gap before the woofer takes over. I can't say that I have tried all the current woofers out their, I can say that the Vandersteen is an excellent choice based on my experience and mates well with even Maggies or Martin Logan CLS and with a great number of dynamic speakers as long as they can go low enough below 80Hz to allow the 6db per octave x-over to do it's thing.
Bottom line is if you have the cash and the space buy two, if you don't(like me),buy one and decide for yourself.By the way, my system has no focus problem using one, although I would love to try two of them here. You can always add a second 2Wq anytime you can afford it.
Your question about crossing over too high indicates that you need to study a bit more about how the thing works. I use one sub and it sounds great providing you choose the correct filter value and placement. Two 2Wq's may be significantly better as Scott indicates, but one is SIGNIFICANTLY better than none in many room situations. Your #2 confuses me as to what you are trying to say? The response is quite predictable using Vandersteens method and providing again as Scott mentioned the main speakers have predictable response low enough. No you can't mate a Vandersteen sub well with say, Spica TC 50's(tied that, nuf said) or other small speakers that will give you a suck out or gap before the woofer takes over. I can't say that I have tried all the current woofers out their, I can say that the Vandersteen is an excellent choice based on my experience and mates well with even Maggies or Martin Logan CLS and with a great number of dynamic speakers as long as they can go low enough below 80Hz to allow the 6db per octave x-over to do it's thing.
Bottom line is if you have the cash and the space buy two, if you don't(like me),buy one and decide for yourself.By the way, my system has no focus problem using one, although I would love to try two of them here. You can always add a second 2Wq anytime you can afford it.