Hi all, i have two mackie srm 1801 18"powered subs which put out 500 watts continous sound and one b-52 15" sub that puts out 400 watts. I've recently learned that placing two subs that are identical right next to each other provides the best sound, as opposed to having them apart which can cause them to cancel each other out. Well, i'm trying to figure out how i can incorporate the 15" b-52 into the mix without it causing that same cancellation. Maybe placing it in between the mackies would be ok? This would put the mackies at 24" apart. Any advice here will be greatly appreciated. Thanks!