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In the Forum: Horn-Loaded Speakers
In the Thread: Problems with horns: upper bass
Post Subject: VolvotreterPosted by Wojtek on: 7/30/2009
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Get in touch with Erik if you're not familiar with volvotreter web site already. His Trax calculator includes CAD numbers for profile drawing.I'm not sure how useful it'll be for your friend's CNC router. Check out www.diyaudio.com and AA for JLH John Hasquin (hope I got it right) posts and tutorial how to make MDF midbass horns. Lots of work but not that difficult and super precision is not required for that pass-band (according to John).Anyone has to start somewhere so good luck ( even Roman loved square mid horns and oppen baffles at some point 
PS. Don't they sell Avantgardes in Poland anymore so you could get an idea what are you after?
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