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DIY HiFi Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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DIY HiFi Forum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: Eureka! 100db from a 30L Cabinet - 65hz to 25khz posted by bcherry on May 10, 2010 at 00:21:45:
The rule, no The Law is: efficiency, small cabinet, bass - pick any TWO.
So we've picked efficiency (100db) + small cabinet (~30L). Of course the drivers used are very special so even with our small cabinet we get down to about 65hz.
What can we do for the rest of the bass, down to 20hz or so? The only way to cheat The Law is to make up for the small cabinet with POWER and clever design.
So we have our compact MLTL cabinet with its special loading. We have the Dynafone which can put out really loud clean bass, handle loads of power (500w program) and be comfortable playing in 30L due to its low VAS.
But what about the POWER? The horn ribbon/cone section has a 10+ db headstart over most any compact bass driver. So 1w of sound from the Crescendo scales to about 10w to get the same sound from the bass unit. A 400w amp would be huge, until now. The Reckhorn sub amp puts out that 400w. A pair of them driving the Dynafone bass module can achieve in room spl of about 125db!
In case the idea of letting a digital amp into your system gives you the jitters: digital amp's one true home is in the bass. Just think, huge bass waveforms sampled into thousands of bits - what could be wrong?
So, the world's first small footprint 100db 20-25khz speaker system.
Heresy!
DIY - Done Right!
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Follow Ups
- Crescendo, Hoffman and Heresy - bcherry 02:31:07 06/04/10 (1)
- RE: Crescendo, Hoffman and Heresy - jusbe 06:55:24 06/04/10 (0)
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