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Old 14th November 2005, 01:02 PM   #1
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Question Aperiodic loading questions

So I've started construction on a pair of speakers for a friend using the Tang Band 4" bamboo drivers. They will be in 4 liter enclosures crossed over at 200Hz to 10" Dana Audio woofers. I was planning on having the Tang Bands in sealed 4 liter enclosures, but was wondering about aperiodic instead. I will certainly make a 4 liter test enclosure and do some measurements with FuzzMeasure before I cut holes in the cabinets I've already started. However I was hoping maybe somebody could offer some insight into designing these enclosures. Here are my general questions: how does aperiodic loading effect the impedence compared to sealed; how does it effect cone excursion; is there a rule of thumb or equation for figuring out port diameter/length? I figure that that stuffing can just be fussed with until I get something satisfactory, but port diameter is not something so easily fussed with.
I'm sure there are no easy "set in stone" type of rules for building/designing aperiodic enclosure, but if anyone could point me in the right direction I would be greatful.
thanks
Joe
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Old 15th November 2005, 09:27 PM   #2
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Nobody have any insights? I've got 4 of the six sides glued up on my test enclosure. What about just porting it so the flatest response in a four litter enclosure then stuffing it to taste? Maybe a 1" port tunned to 60Hz stuffed with fiberglass (4 liter enclosure)?
Joe
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