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Old 27th March 2008, 05:28 AM   #1
gnugear is offline gnugear  United States
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Default Question about BSC and super baffles

I've been reading through all the archives and I'm trying to understand exactly what the super baffle does. If I add one to my BIB will it negate the need for a BSC circuit or are they two different things?
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Old 27th March 2008, 10:33 AM   #2
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Location: UK
It doesn't need either if it's correctly positioned in corners (which is what it's designed for).

A supra baffle lowers the step-loss frequency at / below which the acoustical load makes a transition from 2pi to 4pi radiation space. The frequency at which this transition occurs is dependant upon baffle width -the wider, the lower in frequency the step-loss point is.

In plainer English, above this frequency the speaker is projecting sound forward (more-or less), toward the listener, but below, it is radiating in an omni-directional fashion, so there's an apparant reduction in low frequency sound pressure levels at the listening position, as less energy is directed forward, but distributed in other directions.
"'That'll do", comes the cry of the perfectionist down the ages.' James May -The Reassembler Community sites
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