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So I got an RL-p 18 off a guy on ROE. Decided to try my hand at building a box myself this time. The box is Approximately 6.2 cubic feet net ported to about 27 hertz. I say approximate because it has curved boards and I didn't bother busting out those formulas... So here's some pics. The funny part is, what I thought is/was the toughest part, the curved flares, came out way better than I had hoped they would let alone thought they would. I did the math, drew out where they should end up, then had a friend help me bend them (2 hands simply wasn't enough) and they ended up spot on. All my other easy cuts? Typically a blade's width off.. made for some interesting clamping getting it glued and screwed. Alright, no more delays...
Board sliced, partly secured and ready to bend. My bending buddy making some holes to secure it soon as we bend it. Don't have pics of filling the cuts with resin.. didn't have time or hands enough to grab the phone while we were bending it. My clamps. Nothing but the finest equipment. Making sure we're on. Resining up the inside of the curve
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Fast forward. After finishing the bends I went to work on trying my hand at glassing some kick pods while the flares set. The rest of the work I got done that night didn't turn out well on the camera phone due to lack of lighting. All the picks look like brown blobs. So now the main port board is set, and I'm working on the back port boards going towards the center. 45*s are set ready for the back panel. You can see my saw blade wide off... took some filing work to get the corner to lay flush. Getting close now, ports are all in, one more set of 45s in the middle to flare into the ports and we're on the home stretch. Back 45s are set. I rounded the corner. It creates a flare from about 4.5 inches from the 45s to the end of the board gradually to the 3" port width. Trying to decide where to put the dowel braces. Decided to only go with two. You'll see em in a later pic. The semi-finished product. Still need to do some finish work. Cut the double baffle and laminate it to the top. But, I do believe she's functional as is. A little bit better pic of the interals and the flared port.
Well that's the only pics I took that turned out half way decent. I was using a camera phone, so that obviously effected the quality of the pics. I know it's not the prettiest box, but I do think my idea was good and just wish I had been able to execute it that little bit better. However, it's good and solid and no gaps where there shouldn't be. So it'll work. And, of course, the next one will be better! Live and learn.
Feel free to make lots of comments; good, bad, ugly... I can handle 'em all.
Also, sorry for the side-ways pics. I have every confidence you can deal with it, though!
quote:Originally posted by AllNightLong: That's a good start, but why did you do two seperate ports for just one sub. You should have done a single port for a single woofer.
I didn't know it should be kept to one port per woofer. I just designed it this way off recommended box size and tuning off the website and an idea that popped into my head. I've seen designs with multiple aero/pvc ports to a single woofer... didn't think multiple slot ports, as long as they're symmetrical, would be any different.
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I bet it will look really nice once it's painted/coated/carpeted/whatever.
Tuned to 27hz though? Do you like to roll around listening to pipe organs or something?
Posts: 124 | From: Arizona | Registered: Oct 2002
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Well my old equipment is getting switched out with the new stuff tomorrow. I didn't get time to finish the box the way it should have been finished (proper sanding, maybe some filler before hand in a few key spots). The curved board is painted black, but I didn't have time to sand it or anything so it doesn't look so hot. Rest of the box will be carpeted, and seeing as how it's in the trunk I'm not terribly concerned about it. If at some point I decent to enter it in a show or whatnot I'll yank the box and sand/repaint the port board.
I finished my first set of kick pods Wednesday... gotta say I'm pretty pleased with how they turned out. Some small mistakes obviously for my first try but not too shabby. Even got some props from the local fiberglass guru. One side looks smaller than the other, but when we measured them they were both within a few tablespoons of being .3ft^3 each... not too bad. They're for Dayton Reference RS100 (4 inch fullrange driver) and Vifa XT25. My hands don't fit through the cut outs so a couple of my buddies whose hands do fit helped me out and we had a Sculpe Claying session. Lowered the resonance quite nicely! Got em carpeted up and just waiting the wiring job.
So, old equipment list.
Sources Alpine IVA-D300 Alpine 3545 Active Dividing Network
Amplifiers (3) Crossfire 1502 (1 per front frequency stage) Crossfire XP1400D (RL-p)
I'm not big on messing with electricity so I'm letting the professionals do the wiring. I'll take some pictures so you can see it. Maybe I'll even remember to bring a real camera so the pictures turn out half way decent. But don't count on it!
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Heres some quick pics of where the install is at. I thought I had left more room to do a nice amp board to hide all the wires and what not, but if I do an amp cover it will block part of the port, I'm not sure how big of an effect this will have on it? Some one educate me on that please? It would probably block the bottom 2 inches of the port on either side.... Anyways, until I figure out if I'm going to do a trim board around the amps, I'm gonna loom the wires to try and clean it up a bit and make it look better. Pretty happy with how the box turned out though, looks way better carpeted and with some paint on the port board.
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