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Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
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<blockquote data-quote="Max Warasila" data-source="post: 206854" data-attributes="member: 3845"><p>Mark,</p><p></p><p>I totally forgot to include the outside dimensions. I have added those and updated the plot and drawing files. Additionally, I have corrected the error in the pdf file where only one of the seven plates was shown. Most of the answers you are seeking are located in detail drawings, but I'll go point by point anyway:</p><ul> <li data-xf-list-type="ul">The cabinet is 398x455x935mm. Weight should be similar to other approaches, approximately 80lbs total. I won't know until I build this exact version, but it's essentially on par with other options.</li> <li data-xf-list-type="ul">This design uses a combination of 15mm and 18mm ply. Essentially, everything is 15mm, with the 12" baffles being the only 18mm pieces.</li> <li data-xf-list-type="ul">The 12" baffles are indeed 18mm, with a 9mm recess. I have considered making this 10mm or 10.5mm, but I really don't think it will be an issue. Once you high pass the cabinet, the max excursion drops significantly, and I have assumed doesn't reach xmax often before the VC melts. Maybe I'll test that hypothesis with an acrylic panel version someday (probably not, though - too expensive!).</li> <li data-xf-list-type="ul">The only modification needed to make this box work with the 60 degree horn is a different cutout on the front baffle. The 4594 will still fit, though it will certainly be a tight fit! While not shown in my drawings, this design would also easily support interchangeable horns. I'd probably just add a small outside ring of bracing around the edge of the horn baffle, and use t-nuts or something better to clamp the horn down. Just some ideas.</li> </ul><p>I really did try and design this version with everyone in mind. I made sure to consider different drivers, horns, handles, pole mounts, feet, connector types, damping options, and even wiring. Heck, though it's not shown, this design would definitely allow you to cut off the back corners or add angle irons in the corners to provide flying options <em>a la</em>Peter Morris's version. Really, I hope these drawings are a good reference for anyone starting this project, whether they go with what's there or customize to their heart's content.</p><p></p><p>Happy DIY!</p><p></p><p>UPDATE ON EXCURSION - I did some crude modeling in Hornresp and it claims at 80V the maximum displacement in band would be 9.4mm @86Hz before processing. I probably will increase it to 10.5mm just to be safe in the future.</p></blockquote><p></p>
[QUOTE="Max Warasila, post: 206854, member: 3845"] Mark, I totally forgot to include the outside dimensions. I have added those and updated the plot and drawing files. Additionally, I have corrected the error in the pdf file where only one of the seven plates was shown. Most of the answers you are seeking are located in detail drawings, but I'll go point by point anyway: [LIST] [*]The cabinet is 398x455x935mm. Weight should be similar to other approaches, approximately 80lbs total. I won't know until I build this exact version, but it's essentially on par with other options. [*]This design uses a combination of 15mm and 18mm ply. Essentially, everything is 15mm, with the 12" baffles being the only 18mm pieces. [*]The 12" baffles are indeed 18mm, with a 9mm recess. I have considered making this 10mm or 10.5mm, but I really don't think it will be an issue. Once you high pass the cabinet, the max excursion drops significantly, and I have assumed doesn't reach xmax often before the VC melts. Maybe I'll test that hypothesis with an acrylic panel version someday (probably not, though - too expensive!). [*]The only modification needed to make this box work with the 60 degree horn is a different cutout on the front baffle. The 4594 will still fit, though it will certainly be a tight fit! While not shown in my drawings, this design would also easily support interchangeable horns. I'd probably just add a small outside ring of bracing around the edge of the horn baffle, and use t-nuts or something better to clamp the horn down. Just some ideas. [/LIST] I really did try and design this version with everyone in mind. I made sure to consider different drivers, horns, handles, pole mounts, feet, connector types, damping options, and even wiring. Heck, though it's not shown, this design would definitely allow you to cut off the back corners or add angle irons in the corners to provide flying options [I]a la[/I]Peter Morris's version. Really, I hope these drawings are a good reference for anyone starting this project, whether they go with what's there or customize to their heart's content. Happy DIY! UPDATE ON EXCURSION - I did some crude modeling in Hornresp and it claims at 80V the maximum displacement in band would be 9.4mm @86Hz before processing. I probably will increase it to 10.5mm just to be safe in the future. [/QUOTE]
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