nice, my http://ssguitar.com amp kit arrived
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(I don't know why sketchup wouldn't let me draw a measurement across the whole diameter of the speaker opening, only the radius, but oh well.)pic.twitter.com/ru1GdJM5gV
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because good ideas are for chumps (and because plywood end grain isn't pretty) my plan is for all the edge joints to be mitered (but because it's 1/4" plywood, I'm also going to drive screws into those triangular corner braces)
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This is the speaker, which is enormously overkill for these little amps, but I originally meant to build an LM3886-based ~40W circuit for it. It's 8 ohms, so with a 12V supply the Honey amp should push a max of about…0.85W of power.pic.twitter.com/pHs9ebHxPL
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instead of those triangle braces I could just do an internal frame…I'd have to modify the shelf design to fit inside it. (dimensions based on the actual thickness of the nominal 1/4" ply being 0.2", which I think is just about correct.)pic.twitter.com/6BieiXC6vZ
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what I have is an 8' 1x6, so I'm assuming I rip it down to four 1.25"-wide boards across.
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…it is also possible I'm making my life harder than it needs to be with those corner joints, but what's the point of a project like this if you just do everything the easiest way, anyway?
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I'm going to need another couple of TS jacks (I'm inclined to use 1/4" but I'm not sure it's necessary? 1/8" might be fine) and a patch cable, for connecting the amp boards to the speaker; and a 12V wall wart and socket for it, and some extra wire.
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Since I'll need to visit my folks and use my dad's tablesaw for this project, if I do the internal frame I'll have to wait for the 1st of June (or maybe the 1st of July) to cut the four vertical pieces.
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"why the first of the month, Scott?" Well, because those ends are double-rabbeted, of course.
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Also, I'm going to have to think about the clamping situation. I don't know if my dad has pipe clamps or just C-clamps.
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Maybe I should make a papercraft 1/4 scale model to make sure the whole design works
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on the other hand, those double rabbets might be hell to model at that scale. the good thing about the frame idea is that if I can get four boards across out of that 1x6, I only need about 38" of length, so I can fuck one up and still have plenty of material to do another.
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so if I make that internal frame, then screw the plywood sheathing to the frame (and glue and clamp the edges as well as I can), that should be pretty solid.
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but I do need to redesign the removable amp/controls shelf so that it fits inside the frame
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oh wait, I need to move the horizontal front piece of the frame down to sit below the amp shelf, too. that simplifies the rabbets on the top front corners, also.
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…might want to put some runners along the sides, though, for the shelf to rest on, or maybe just crosspieces? need to think about that more.
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End of conversation
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