HiVi B3N/B3S in PVC Pipe Enclosure? - diyAudio
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Old 24th February 2006, 12:11 PM   #1
mezz64 is offline mezz64  United States
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Join Date: Dec 2004
Location: PA
Default HiVi B3N/B3S in PVC Pipe Enclosure?

Is this a good or bad idea? From the little i've read on baffle step it seems to me that by doing this i remove the baffle and could ignore the need to compensate for it since its not there? I would like the base the design / filter from what zaph has already done, but was hoping for advice on what changes would be necessary to the filter due to the different enclosure.

Thanks,
John
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Old 24th February 2006, 12:27 PM   #2
sreten is offline sreten  United Kingdom
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Join Date: Nov 2003
Location: Brighton UK
Default Re: HiVi B3N/B3S in PVC Pipe Enclosure?

Quote:
Originally posted by mezz64
I From the little i've read on baffle step it seems to me that
by doing this i remove the baffle and could ignore the need to
compensate for it since its not there?
John
Hi,

No. The baffle becomes the same size as the unit.

/sreten.
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Old 24th February 2006, 03:36 PM   #3
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Join Date: Jan 2006
Location: Boulder, CO
In terms of baffle step diffraction, a cylinder with the driver on one end is the worst possible enclosure, followed by a small square baffle, a small rectangular baffle, a sphere, and then the best, which would be an infinitely large (or at least very big) baffle.

I'd recommend playing around with the Baffle Step Simulator (edge.exe). Its a fairly simple program that lets you play with different baffles, different speaker positions, and then it suggests baffle step compensation filters.

Its not perfect, since many times the theory and the measurements don't line up, and you need to tweak component values, but the simulator is a good way to get started. Try modelling a tiny baffle, and some big ones, and see the difference.

http://www.tolvan.com/edge/

peace,
sam
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