Stu, just curious which other designs you think for DIY speakers are better than the BFM's. Not arguing, just don't have a ton of experience with many of the DIY subs or tops that are out there. Thanks
We are thinking of acquiring some new mid tops and I thaught I would give the omnitop J array a look. purchsed the plans and got dumb struck at the type of drivers they get loaded with. NONE of the spec woofers are intended for horn loading, but you cant call that a horn either, actually. So, that got put one side for now.
The main thing that puts me off his designs is the huge compromise on decent drivers. He tries to get a lot of 'everything' with his bass bins. The drivers do not have enough control for what they get used in. He posts comparasons [some total lies] at 1w. The titan 48 can only handle about 45 - 50v. thats around 350w. Above this you loose your vc. Thats pathetic an you do net even reach 130db... If you take any of the other horns he compares the 48 with and stick them with real power, like 1kw into the 1850, you will have a problem on your hands. It will piss all over the 48 and you will not have excursion problems. That goes for almost all his comparasons. He compares it to danly's 115. you will need 8 48's at 'full power' to keep up with 2 115's at only rated.
I built two of the Tuba 30’s and I do have to say they require a lot of EQ to sound good, but if you don’t have a lot of money for amps, they are quite efficient. I have thoroughly enjoyed my T30’s but they are pretty big. Overall I am pleased with them and I would build more if the driver constraints weren’t so specific. I’d give the SQ an 8/10, SPL 9/10 for the power invested.