Two subwoofers??


I have an MX-700 sub. I love the speed that the twin 8" drivers deliver, but I could use more "impact". I know that this sub is room sensitive, and it has been placed with care, so I am fairly certain that I am getting all I can from the sub. I have been toying with the idea of adding a second MX-700 (my wife does not know this). I know that you can gain up to 6db from a second sub, but I am worried about sound cancellation. My question is this:

Has anyone tried a second sub, and what were the overall effects?

and

For anyone that has a second sub, what placement is the best to avoid sound cancellation?

Love to hear from anyone whose wife is more understanding of this fun hobby.......
skidrhow
I don't see the need to use three subs as you suggest because the Velodyne frequency response is flat from 100 Hz down. Using two subs for the front channels and a third sub for the home theater channel would be sweet if you have the budget plus floor space.
I was not suggesting using three subs. Let me clarify. I have B&W CM2 speakers for the front and surrounds. These are great speakers if only a little light on the bottom end. To fill out the lower end, I now have only the one sub, and am exploring the idea of a second sub. My previous thread was to inquire if anyone had tried a two sub arrangement that used a large driver sub for lower freqs (40Hz and below) and a smaller driver sub for the 80Hz to 40Hz range.
Sorry about the misunderstanding. With the extended frequency range of your better quality subs it is not necessary to split the 80Hz to 20HZ range. So I still think that using an independent sub per channel would be your best option.