Originally Posted by tuxedocivic
Part of the problem with this design is its all speculation without the seos24 measured and having measured various woofers in various configurations. I mentioned to chop in pm that all th drivers should be built modular and taken outside to measure different configurations. But what woofer to buy when he doesn't know the best configuration. FWIW, I like the quad 10 idea. The wwtww with 18s is awesome also, but fear it would corner chop into a design compromise if things didnt measure quite as hoped.
Originally Posted by coctostan
Absolutely Tux. Jzagaja might have measurements. I think that either the quad 10s (or maybe quad 12s, but don't see much advantage) or the vertical shaded MTM of 15's or 18's are the best solutions. Which is better? Who knows. The quad 10s would control horizontal directivity a bit lower. The vertical column suggested by Seaton would have more bass headroom for sure. The quad 10s would also be a more realistic form factor IMO.
I wanted to put this back out there guys, after the long conversation I had with John last night. We talked a lot about TD15m all around, singles(doubles mtm would be cool, but not really usefull as surorunds I think) and quads up front with the verticle wwtww configuration. John's thoughts, based on room specs, seating, the want for flexibility of xover between 400-800hz, etc, are that the wwtww 15s will offer the best compromise and should have no trouble if a xover point on the higher end is needed. This is what he said he'd be doing if it were his. He thinks it would have disgusting levels of effortless output and the design would more than likely work really well. He also suggested the single 15 in surrounds vs dual 12s.
As for form factor, not even close to a concern for me. Whatever I need to build, I am willing to build and can fit. I will keep a couple modular test cabinets to bring them to GTGs etc.
I had sent Erich a note on getting a pair of seos24s here to measure, but I know he is super busy and don't want to harass him too much:D
I guess what I'm asking is do you guys think the verticle quad 15s will leave me flexibile enough to deal with some adversity if needing to cross higher?? I have my order in for all TD15M drivers, but could swap if the SEOS show up really quickly somehow. In the end, If I have to experiment and buy more woofers, oh well, I think the final outcome will be worth it once we get it right. I could also just add some smaller drivers and shade as suggested if the quad vert 15s act funny. maybe 4 6s, 4 15s and the 4594:D Really though, in this situation I could move some of the 15s from the lcr to the surrounds for an MTM design and use dual 15, quad 6 and CD in the mains. Again, this would be a contigency plan in the event that verticle quad 15s has trouble. I would do the 18s verticle, but the potential upside vs quad 15s, imho, isn't enough to warrant the risk in conceptual desgn. No doubt the 18s would be awesome, but in reality the quad 15s would probably be used to 50% capacity or less, for at least 50% of the time.