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Eminence Alpha-15A 15" Driver
2 12 inch nirvana full rangers on a 24x48 in baffel, one nirvana in the center, the other above that with the alpha on the bottom, 3 drivers per side,
the audio nirvana drivers are 95.8 db efficient and the response is something like 38 hrtz to 20 k hrtz. the alpha would be a goodmatch with it's efficiency at 97 db, should be able to get away without an extra amp, as it is now I just have one audio nirvanaper baffle in the center. I would have to rout an additional 4 holes. it sounds pretty good with just the one nirvana but is of course bass shy, iv'e compensated by turning the bass tone control all the way, I guess one nirvana could be enough but Iv'e had them in a ported box and then an open box and the 2sounded smoother than the one plus 3 db more efficient , theefficiency in an open baffel with one driver is allready awsome.but anyway I think the alpha with it's high efficiency and highQt makes it a perfect driver for open baffel. I believe the 2 nirvanas instead of one would increase the bass but would bebetter with the alpha to give it foundation.
I am sorry but I don't understand the question. It sounds like you are building a stacked box 3 or 4 way PA system. Your speaker selections are good so if the cabinets are right and you have good crossovers, EQ and power the arrangement presented should yield good lows and punchy low-mids.Stack some horn lenses, good drivers and tweeters to this and you could handle mid sized outdoor venues.
Date published: 2012-04-30
designing an open baffel with 2 12 inch full rangers, would a low pass xover at 80 htrz on the alpha be a good point to crossover
Please, explain your open baffle layout more . Is the alpha 15a going to be in the same baffle? You say 2, 12" full range speakers, is that per speaker or for both?
Date published: 2012-04-27