Now that I'm finished school for good, I've finally got some time to work on some projects that have been left unfinshed and/or haven't been started, but have been rolling around in my head.
The first project is to finish my CSS / Dayton bookshelf speakers that I started quite some time ago. The front baffles will be redesigned and then I'll be designing and tweaking the crossovers.
Once that's finished, I'm planning on making some enclosures for my pair of e8a.44s that I originally had in my old Z. Each driver will have it's own enclosure, and I'd like the construction of the cabinets to test my woodworking skills, and allow me to give my new router table a thorough workout
I've had a few ideas floating around in my head, but I actually sat down this afternoon and came up with a pretty cool design. Here's a small sneak peak at one part of it. The pair of enclosures will stand about 40-41" tall and consume just under 3 full sheets of 3/4" MDF
I like this design alot, but if you guys have and cool suggestions, I'm all ears :beer:
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eclipse 8443
ID CD1 pro's on cd1e bodies
Peerless exclusive 8" midbasses
Here's a few views of the cad model. Will it take forever to route out all 106 pieces (53 each)? Yes. Will I probably be sick of routing when I'm done? Most likely. Will it be pretty darn cool in the end? I hope so
Specs
Port Area - 9.6 in^2 (2.4 in^2 per port)
Port Length (without end correction) - 45 layers thick for a total length of 33.75 in
Volume (without accounting for end correction) - 1.27 ft^3
Dimensions (WxDxH) - 10.5" x 10.5" x 38.25" (not including floor spikes)
Tuning (approximating my ports as a single 3.496" round port, no end correction) - 23.64hz
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Last edited by black300zx; 06-16-2009 at 12:27 AM..
Sweet jesus dude. Just have eD cut them with the CNC...
Very cool design though!
I think that might cost a pretty penny to have them cut and ship all 104 pieces (I miscounted originally). Besides, part of the reason I wanted to design something like this was to put my new router table to the test. The first piece of each design (there's 4 different pieces used during construction) will take some time to get just right, but after that I'll rough cut them with a jigsaw and use a flush trim bit to make them all uniform.
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Seriously. Call eD. Build a few just to prove to yourself you can, then get a CNC router to do the work.
Also, put pin locators in the design. Otherwise you're going to go insane smoothing the outside. Pick a size you can get dowels for, and that is also a size bit used by the CNC. Or figure out a drill press jig or some such so you can drill match holes for dowels on the pieces you make yourself.
Seriously. Call eD. Build a few just to prove to yourself you can, then get a CNC router to do the work.
Also, put pin locators in the design. Otherwise you're going to go insane smoothing the outside. Pick a size you can get dowels for, and that is also a size bit used by the CNC. Or figure out a drill press jig or some such so you can drill match holes for dowels on the pieces you make yourself.
Until I can land myself a full time engineering position (now that I've finally graduated), time is something I have a lot of, but money isn't. Once I get a template made for each of the four pieces, I can accurately reproduce them. It'll take a while, but I don't think it will be difficult enough to justify spending the extra money to have them cut on a CNC. If I had a bunch of disposable income however, it would be a different story.
Dowel pins are in the plans, and a drill press and jig will be used to make the pin holes uniform.
As for the outside, my plans are to cut all pieces after the first 1/8" oversize, then use a flush trim bit after each layer so minimal sanding will be required. Hopefully I can find a 1.5" tall flush trim bit for a reasonable price so that I can glue up two layers at a time, then hit them with the flush trim bit after the glue dries.
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If you are going to use this construction method, why not make it a bit more interesting shape instead of just square/rectangle?
Make it oval with 2 ports, star shaped with 5 (or more) ports, etc
Most importantly post lots of pictures, and good luck routering (is that a word?).
I will be playing around with other designs, as this is just the first version. This design was mainly just to feel out the dimensions and such. Since the pair of subs will only be splitting 100 watts, I'm thinking about reducing the port area a bit to lower the tuning without needing a ridiculously long port.
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After thinking about this for a while, I decided a more oblong profile would look nicer since I plan on using these as stands for my main speakers. A 10.5 x 10.5 square stand under a 7 x 9.5 speaker would look kind of odd.
I present the cad sketch of version 2. Initial calculations put it at about 1.5cf tuned to about 24hz with 11.4in^2 of port area.
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eclipse 8443
ID CD1 pro's on cd1e bodies
Peerless exclusive 8" midbasses
Last edited by black300zx; 06-17-2009 at 06:12 PM..
After thinking about this for a while, I decided a more oblong profile would look nicer since I plan on using these as stands for my main speakers. A 10.5 x 10.5 square stand under a 7 x 9.5 speaker would look kind of odd.
I present the cad sketch of version 2. Initial calculations put it at about 1.5cf tuned to about 24hz with 11.4in^2 of port area.