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Multi-Way Conventional loudspeakers with crossovers

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Old 21st February 2005, 10:16 PM   #1
diyAudio Member
Join Date: Dec 2004
Location: Illinois
Default Prelim Loudspeaker

This would be my first DIY project, and basically I want to make a great sounding speaker for less than I can purchase an already finished one. I plan on spending around 500 dollars a pair for drivers alone. This is my inital idea, and I would appriciate any and all input on the quality of drivers, and design. I designed the enclosure using WinISD. I was originally against porting them, but then I noticed if I port near the FS, I get a much flatter response, is this indicative in real life?

Also I am considering going to a WMTMW design, instead of a MTMWW design that I have now.

Here is a little webpage I built about my idea (note the original 3d picture is to scale, and the small triangles next to the MTM are just for show and are not part of the volume of the enclosures.)

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Old 21st February 2005, 11:10 PM   #2
RJ is offline RJ  United States
diyAudio Member
Join Date: Oct 2004
A thing to know about FS.
If the speakers FS is below room resonance you will have a boomy bass.
I don't know if you have the Excel spreadsheet program, but if you do download ported.xls from here;
This program helps you design speakers with room boundary bass gain or even a car.

Anyways, here are two sites with speakers you have in mind.

I'm trying right now to get someone with TL experiance to model a tapered box like the BH2 usin 2 - 8" woofers.
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Old 21st February 2005, 11:24 PM   #3
Lionel is offline Lionel  France
diyAudio Member
Join Date: Jan 2004
Location: Saint Etienne
Just a question/suggestion...
Since you have a very strong bass section why don't you choose "real" midrange like the PL11WG09-08 for example ?
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Old 23rd February 2005, 03:30 AM   #4
diyAudio Member
Join Date: Nov 2003
Location: California
Ditch the narrow slot ports. Round works best. Flairing both ends as per the AES article by some of the guys at JBL is even better (it's not a simple radius).
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