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Figuring out final details before my first DIY sub

post #1 of 11
2/8/08 at 6:40am
Thread Starter 
After doing lots of research and with much thanked for advice from avs i'm down to final decisions. I'm going to use the css sdx15. I'm pretty sure for amps, i'll use the behringer ep2500 with the BFD. The o-audio seems like a good choice too but from reading, the behringer pair should give me better eq opportunities and fine tuning. Since i can possibly build a box up to 36"Lx18"x30H, i have yet to figure out if 2 1821pr's or a nice size port like 6-8" round or dual ports (if that's necessary) will fit the ticket yet. I need to get started building the box, but i need to figure which way i'm going to port it. I can't wait to see armystud's proposal on the enclosure. I'm hoping to get around 15-17hz if that's possible. This should get me started for now.

As far as building it, to cut out the holes, do i only need a router with the jasper jig? I'll need a jigsaw too and some clamps. I think that's the only tools i need. I need these tools anyhow so now is a good time to buy i suppose. I guess i can get the sides and everything cut at lowes. I wonder how much that costs?
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post #2 of 11
2/8/08 at 6:44am
That jasper jig and router give great results. Check out my new pictures on my thread. That was the first time I used it, and I feel the braces were nearly perfect. You will love using it.

Good luck,
Robert
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post #3 of 11
2/8/08 at 4:06pm
Not sure what your local big box reno store charges, but at my ( sorta local, 70 miles away ) Home Depot, 2 cuts are free, and 25 cents for every cut after that. It costs me virtually nothing at all to get a full sheet cut into 2 x 4 foot manageable sections.

Router with a few bits, especially a flush trim bit with bearing is a must have item.
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post #4 of 11
2/9/08 at 1:38am
I've got the designs pretty much done, I just need to get the PR's mounting info to finish them up. You should be looking at a nice low tune, 14Hz or so, designed to be used with a high pass filter at about 10Hz.

Home depot ripping is nice, they aren't very accurate, but thats what your saw at home is for.

Personally, I like to use BB plywood and take the sheets home intact, then I plan out where each section goes so I can really get nitpicky about grain. There are fews things sweeter than feeding your entire 4x8 sheet into a massive table saw that easily handle boards of that size.
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post #5 of 11
2/9/08 at 1:40am
Edit, I also have a slot port design that should be up by the end of the weekend, 18.5Hz tune, absolutely no port noise, I guarantee it!
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post #6 of 11
2/9/08 at 2:08am
Btw, if you are going for spl's, the ported is your ticket, it will deliver lots of sound from 20Hz on up, if you want deep, PR's are your friend, they dig down to give you solid room response down to 13Hz or so.
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post #7 of 11
2/10/08 at 9:57am
Thread Starter 
Awesome news armystud. I can't wait to get this started. Are there lots of movies that dig deep down? Also will the PR's do as well as the ported in the 20hz range. I probably don't need a ton of spl being in a small room, but i am looking for extreme depth. I mean the pr's are going to give me plenty spl's too i'm sure. What would be the differences here? What would be the difference in spl's between the two. I like the sounds of no port noise with the slot port design. Sounds like whichever compromise i want to settle with will be my choice. I'm sure any are a fine choice. Are you going to post the plans on avs or email them to me. I just want to make sure i don't miss them. Thanks.
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post #8 of 11
2/10/08 at 3:35pm
Thread Starter 
I'm trying to think of all the tools and supplies i'm gonna need exluding the wood. Correct me if i need anything else.

Clamps, orbital sander, saw, router, router bits?, not sure which ones yet, jigsaw, jasper jig, glue, and liquid nails. Is there anything else or anything here i don't need. I'm trying to get everything together to start.
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post #9 of 11
2/10/08 at 4:12pm
In all honesty, clamps, router, table saw. Everything else depends on how you want to finish it. I can't remember if I even used a jigsaw in my last few builds, liquid nails or basically any wood glue should do the trick.
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post #10 of 11
2/10/08 at 4:26pm
Thread Starter 
So i don't need a jigsaw to make any of the cutouts for the internal bracing or anything. I guess that depends what the design is for the internal bracing. So i can pretty much cut most cutouts with the flush trim bit? A plunge router is probably better to cut the circle out so all the material isn't being cut at once, right?
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post #11 of 11
2/11/08 at 12:51am
Well, it really depends on the nature of your cutouts, some are easier with a jigsaw, others are easier with a router.
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AVS › AVS Forum › Audio › DIY Speakers and Subs › Figuring out final details before my first DIY sub