They throw a huge image and are very sensitive, I liked them very much.Recently I tested the new SB Audience Bianco-15OB350 15" Open Baffle Woofer.
You can do it, just giving you the practical reality. These things have been cranked on a daily basis for over half a year now and no problems whatsoever. I used a dipole MTM to prevent feedback into the instructor's microphone, and keep the instructor and members under the speakers from getting blasted, while those further away got plenty of SPL. There are also 2 x 12" subs on the floor that come in at 80hz. Unfortunately I cannot find the final measurements I took in the studio at the moment.
The crossover was placed at 400hz 24db/oct LR. The nice thing is, the sb 4" can play considerably louder above this point on an open baffle compared to in a monopole. One of the best raw measurements I've seen of a dipole.Īs you can see, the rolloff begins around 200hz. All the fiddling and rebuilding was worth it, as it smoothed the dipole response considerably and the sensitivity of the parallel tens matched the 90db sensitivity of the full range nicely. The full range is also offset to the short side. I had to build a couple extra baffles before I determined the response was better without the full range countersunk. The face of the baffle is a bit over 14" wide, around 28 inches tall and the longer wing is 10.5" at around a 12 degree angle, while the shorter wing with no angle is a little over 3" if I remember correctly. I'd use an electronic crossover and separate class D amplification for the woofers- Eminence Alpha 12a's.Īs an example, here is a 4" sb mid used as a full range with two peerless 10 inch drivers run in parallel. I think I'd also offset the 4" somewhat to the outer edges of the pair. So right now I'm planning to build the Visaton No Box speaker about 25% smaller in height and width but not depth. Shouldn't that get me to a 90db output level? I don't need a lot of volume preferring smaller ensemble music - and I have a JBL horn system in another room. I'm planning to crossover to the woofer at 100-200 Hz to relieve the 4 inch of bass duty. It seems to me that a four inch speaker would be faster and better localization too but at a reduced volume.
I was looking at the Visaton B200 8 inch first and noticed how much better the polar dispersion is in the B100. I'd like to use the Visaton B100 4 inch as the full range speaker. I'm planning to build an open baffle speaker with an included woofer. Most full range speakers are 8 in and larger.
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