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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Mark Wilkinson" data-source="post: 139095" data-attributes="member: 8989"><p>Re: New DIY Mid High</p><p></p><p></p><p></p><p>Thanks Peter,</p><p></p><p>All the 5/8 ply I can find is really 19/32, so it's only a fraction of a mm thicker than the 15mm baltic birch.</p><p>I think I'll use the 15mm BB and make sure to brace it really well, using your knock test. (I see JTR uses this wood, even on his Orbit Shifter sub.)</p><p></p><p>I'm also hoping to gain some 12" driver-to driver-clearance (8mm) by keeping the overall outside box dimensions, and the mid horn dimensions, both the same. I figure the 12" baffle boards (or part D) need to gain the difference in 4 thicknesses (eg top and part E).</p><p>8mm isn't much, but it sounds like the 12" cone-to-4594 clearance is super tight.</p><p>What clearance did you settle on as acceptable?</p></blockquote><p></p>
[QUOTE="Mark Wilkinson, post: 139095, member: 8989"] Re: New DIY Mid High Thanks Peter, All the 5/8 ply I can find is really 19/32, so it's only a fraction of a mm thicker than the 15mm baltic birch. I think I'll use the 15mm BB and make sure to brace it really well, using your knock test. (I see JTR uses this wood, even on his Orbit Shifter sub.) I'm also hoping to gain some 12" driver-to driver-clearance (8mm) by keeping the overall outside box dimensions, and the mid horn dimensions, both the same. I figure the 12" baffle boards (or part D) need to gain the difference in 4 thicknesses (eg top and part E). 8mm isn't much, but it sounds like the 12" cone-to-4594 clearance is super tight. What clearance did you settle on as acceptable? [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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