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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: 147447" data-attributes="member: 3845"><p>Re: 60 Degree DIY Mid Hi</p><p></p><p></p><p></p><p>Funny you mention this - I'm trying to finally get a working box done this week. I tried a while back and ended up with a lopsided failure due to all sorts of errors, but I'm feeling much more confident this time!</p><p></p><p>The hard part was not, by any means, the design of the box itself. I didn't cut the back corners and I didn't include a side panel. I did include a removable front horn baffle and a clever sort of grill to keep things interesting and utilitarian.</p><p></p><p>What <em>was </em>incredibly difficult, however, was learning and figuring out <em>how</em> to make the design of the box. The reality is that it's nearly impossible to CNC route angles, and to do so is expensive and more time consuming than simply cutting the parts out on a good quality table saw (which I highly recommend). The sides, top, and bottom of the box have CNC routed pockets, the 12" baffle is routed out more or less as called for in the modified, "no ring," design, the horn brace is routed, and the ports, mid-baffle pocket, and half-lap are done on the CNC router for ease. Surprisingly, I don't have access to a table route, so I've sanded the rounded baffle down instead of just using a round-over bit. Go figure.</p><p></p><p>If you wish to bother me about drawings, I can most certainly draw and get my version to you. The issue with the version I have right now is that it's in Inventor. Great tool - doesn't play well with ANYTHING!!! The other drawings I have are just primitives for use in my CAM software. So I'll just re-draft in CAD eventually. The more you bug me, the better chance that I will get it done before spring break. If you give me an earlier deadline, I'll get it done. Otherwise, it'll get put off, if I'm honest. Up to you all.</p><p></p><p>One question for you, Peter, though - how did you make the horn curve? It's admittedly the main thing I don't have a great idea for, besides routing out a ton of little curve and piling them up on top of one another!</p></blockquote><p></p>
[QUOTE="Max Warasila, post: 147447, member: 3845"] Re: 60 Degree DIY Mid Hi Funny you mention this - I'm trying to finally get a working box done this week. I tried a while back and ended up with a lopsided failure due to all sorts of errors, but I'm feeling much more confident this time! The hard part was not, by any means, the design of the box itself. I didn't cut the back corners and I didn't include a side panel. I did include a removable front horn baffle and a clever sort of grill to keep things interesting and utilitarian. What [I]was [/I]incredibly difficult, however, was learning and figuring out [I]how[/I] to make the design of the box. The reality is that it's nearly impossible to CNC route angles, and to do so is expensive and more time consuming than simply cutting the parts out on a good quality table saw (which I highly recommend). The sides, top, and bottom of the box have CNC routed pockets, the 12" baffle is routed out more or less as called for in the modified, "no ring," design, the horn brace is routed, and the ports, mid-baffle pocket, and half-lap are done on the CNC router for ease. Surprisingly, I don't have access to a table route, so I've sanded the rounded baffle down instead of just using a round-over bit. Go figure. If you wish to bother me about drawings, I can most certainly draw and get my version to you. The issue with the version I have right now is that it's in Inventor. Great tool - doesn't play well with ANYTHING!!! The other drawings I have are just primitives for use in my CAM software. So I'll just re-draft in CAD eventually. The more you bug me, the better chance that I will get it done before spring break. If you give me an earlier deadline, I'll get it done. Otherwise, it'll get put off, if I'm honest. Up to you all. One question for you, Peter, though - how did you make the horn curve? It's admittedly the main thing I don't have a great idea for, besides routing out a ton of little curve and piling them up on top of one another! [/QUOTE]
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