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Looking to build a single-driver vented mega sub. It's for a two channel system in a gigantic room with a ton of power behind it. Speakers are Klipsch Belles with ALK crossovers, K43 pro woofers, Trachorn squakers w/JBL pro mid drivers and Beyma CP25 tweeters. Amp is a Crown Studio Reference 1, 780w x 2 @ 8 ohms. The system is EQed to +/- 1db from 50hz to 630hz then down 1.5 db / octave upward via a DBX Driverack. I'm looking for a single driver supersub, and have narrowed it down to two contenders, the Beyma 21L50 and the McCauley 6174. Since it's music-only, I only need it to go down to 25hz. I modeled the subs in WinISD, and it looks like with room gain, either one will do the job. The sub will have its own Driverack and will also be +/- 1db. Thoughts?


http://www.usspeaker.com/beyma%2021L50-1.htm

http://www.mccauleysound.com/compone...ons.cfm?ID=126
 

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A couple of thoughts - Why only a single sub? If it is a gigantic room, multiple subs would probably allow a more even in-room response, and putting subs nearer the listening positions may increase the SPL for them. Second, is a single large diameter driver really the best way to get high SPL? Have you tried modeling multiple high-excursion 12" or 15" drivers - like Shivas or Daytons?
 

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Quote:
Originally Posted by billybob_jcv
Have you tried modeling multiple high-excursion 12" or 15" drivers - like Shivas or Daytons?
Or TC Sounds drivers sold by Sound Splinter or O Audio...
 

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The sub will have its own Driverack and will also be +/- 1db.
Even with an EQ, how can you guarantee the in-room response will be +/-1 dB? Even an EQ has it's limitations in a difficult room.
 
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