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Low Earth Orbit
DIY Audio
PMA - 60; New arrayable double 12 and horn.
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<blockquote data-quote="Dave Eckblad" data-source="post: 214357" data-attributes="member: 12723"><p>Thanks for sharing your experience Carl! That's helping me a great deal. But, one thing I'm still wondering is how Peter was able to build two ~8x8cm port openings that aren't as long as in the WinISD model I was working on to match his specs, with the same 12HPL76 data and same XO/PEQ settings, without hitting ~30m/s port vel. at the 80hz XO point.</p><p></p><p>Separate of that, I've been doing my own divergent work based off PM's asymmetrical cab design with the 12NDL76 and came up with this slightly taller version with ports to the front. I brought the tuning down a wee bit to move the port energy to just below the pass band region. This also helped me better match phase with a dual 18" reflex design I'm working on.</p></blockquote><p></p>
[QUOTE="Dave Eckblad, post: 214357, member: 12723"] Thanks for sharing your experience Carl! That's helping me a great deal. But, one thing I'm still wondering is how Peter was able to build two ~8x8cm port openings that aren't as long as in the WinISD model I was working on to match his specs, with the same 12HPL76 data and same XO/PEQ settings, without hitting ~30m/s port vel. at the 80hz XO point. Separate of that, I've been doing my own divergent work based off PM's asymmetrical cab design with the 12NDL76 and came up with this slightly taller version with ports to the front. I brought the tuning down a wee bit to move the port energy to just below the pass band region. This also helped me better match phase with a dual 18" reflex design I'm working on. [/QUOTE]
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PMA - 60; New arrayable double 12 and horn.
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