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  #109  
Old 11-30-2009, 09:32 PM
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Re: WK 10" Enclosure Dimensions

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So if you add more and more stuff inside the box (bracing and whatnot) then you should make the box a little larger.. I get that. Will it damage the woofer if the box is a little too large / small for it, or will that just make it sound different from "factory spec"?
It will just sound different. Power handling goes up in a smaller than ideal enclosure, and goes down in a larger than ideal enclosure. Larger usually plays lower (lower F3), and smaller usually cuts of higher (higher F3).

Just plan shit out and triple check all calculations and make it right. Overdoing an enclosure is a good thing. The PERFECT enclosure is one that is acoustically dead - zero resonance. You won't get that, but the closer you get to it the better. So brace away, make sure all sides match up well, etc, etc. If you're going with a square baffle, I'd recommend using a double baffle.
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  #110  
Old 11-30-2009, 09:46 PM
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Re: WK 10" Enclosure Dimensions

baffle = front of the box where the speaker goes?
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  #111  
Old 11-30-2009, 09:51 PM
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Re: WK 10" Enclosure Dimensions

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baffle = front of the box where the speaker goes?
Yezzir.
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  #112  
Old 12-02-2009, 06:38 PM
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Re: WK 10" Enclosure Dimensions

I actually got straighter cuts using my circular saw than using my table saw. What I did was use a straight piece of pine board and clamped it down along the sheet of mdf I was cutting, using that as a guide to run the circular saw against. The guide piece of wood has to be offset from the line you want to cut to compensate for the width of the circular saw blade from its bottom plates edge. Just measure ur mdf and make a nice thin line in pencil you want to cut, then make sure the blade is right on the line before cutting. The edges dont need to be perfect if you have a sander, I have a nice heavey duty belt sander I used to even up all the edges.

I used wood glue along all inside corners instead of a sealant. I put the 1"x1" strips of bracing in after I put glue all along the interior. JL has a good amount of info. http://mobile.jlaudio.com/support_pages.php?page_id=141 The box I built is simple, almost square, and small so I didnt need that much bracing. I didnt even compensate for the added bracing since I just threw it in for fun after it was built, but it sounds great and I dont feel I added that much extra wood inside that i would need to enlarge the enclosure, but if I built another box I would probably add like 3/8"s- 1/2" to one of the dimensions. As matt said wood glue is stronger than the wood when cured so the screws dont really do much but get in the way of the sander, a few screw heads I completely ground away with my belt sander getting my box nice n even. Can even use small nails with clamps to temp hold it together, but you need the clamps to hold it tight while the glue sets. On this box i didnt double up on the baffle because I would of had to buy another sheet of mdf, but with the sub I have the sides of the box are very close to the surround of the sub I dont feel its needed or would benifit from it, with larger boxes I would though.

When I installed the carpet I was stumped because I meant the box i built to be temporary so I made it square. When i did the carpet I used some 1/2" mdf i had laying around and cut two pieces the same size as the sides, I wrapped the top, bottom, front and back with one piece of carpet with the edges lapped over the sides then installed carpet on one face of the 1/2" mdf pieces and folded the edges over all the way to the other side, then clamped the sides on using alot of wood glue between the box and two pieces. I copied the idea from this web site, using the "simplist method' but used wood glue and clamps while the glue set. http://www.bcae1.com/carpetenclosure.htm
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  #113  
Old 12-02-2009, 07:10 PM
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Re: WK 10" Enclosure Dimensions

Good info Timmy!

Also Chris, if you are going to purchase tools, purchase one, and get a router (plunge/fixed base combo). You can do straight cuts, circle cuts, and of course all the different odd things that bits allow. Most routers will come with a straight cut guide, so that will make cutting straight lines a breeze. I'd also grab a 4' level (should be pretty cheap) and use that as a fence (guide) if need be (you'll also need a couple small C-clamps... cheap).

I just picked up the Craftsman 17543 plunge/fixed combo for quite a bit less than what they retailed for (got it for $65 after discounts). "WOOD magazine" did a HUGE router comparison (last year I believe) and selected the 17543 as the dollar for dollar best router (they were $150ish around then). I also picked up a Craftsman Professional Grade 1/2" shank, 1/4" straight cut bit ($20) and a Jasper Jig Model 200 from partsexpress.com ($40)- it's an EXCELLENT circle cutting guide.
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  #114  
Old 12-02-2009, 09:19 PM
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Re: WK 10" Enclosure Dimensions

Man Tim that's some great information! Thanks!!

Matt how did you manage to get the router so cheap??? I would love to invest in one, but need the cost to be low since I won't be using it a whole lot. I have a Circular Saw already and was going to do exactly what Timmy suggested by using another straight piece as a guide (saw a guy making shelves once the same way). Thanks again for the info guys!
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  #115  
Old 12-02-2009, 09:30 PM
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Re: WK 10" Enclosure Dimensions

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Man Tim that's some great information! Thanks!!

Matt how did you manage to get the router so cheap??? I would love to invest in one, but need the cost to be low since I won't be using it a whole lot. I have a Circular Saw already and was going to do exactly what Timmy suggested by using another straight piece as a guide (saw a guy making shelves once the same way). Thanks again for the info guys!
MSRP was $120. It was marked down to $80. Since I was already buying so much Craftsman shit, the clerk suggested I sign up for their free membership and that took off another $15 from the router!

I also have a somewhat cheap circular saw, but I just don't like using the cheap factory blade. Cuts are always rougher than I'd prefer. so instead of investing in a new blade I figured I may as well get probably the most versatile tool ever!

Also, I absolutely needed the ability to cut perfect circles. I am damn good with a jigsaw (maybe a deviation of 1/8" at most at any point around), but for this fiberglass enclosure that I'm going to be making (more so the grill assembly), I'll need perfect circles.
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  #116  
Old 12-03-2009, 07:44 PM
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Re: WK 10" Enclosure Dimensions

Honestly I have had the same cheap ass Crastman circular saw i first bought like over 10 years ago, the key thing is the blade. The blade that usually comes with it is a multi-use blade with a smaller number of teeth. Get a decent blade thats made for fine to medium cuts, and when cutting dont push the saw too hard into the wood, let the blade pull the saw almost and it will last you along time.

And having a router, I have just a basic Ryobi from Homedepot and it works fine. I have alot of bits for it and have made many things around my apartment with it, but i didnt even use it on my sub enclosure. To make a perfect circle of that size another attachment is needed that they sell for routers but its like 50 bucks so I said screw it.

For my circular cuts on my enclosure I used my basic jig saw with a fine tooth blade, actually went thru about 3 blades because they seemed to break so easy but a 3 pack is under 3 bucks. I first made a pilot hole with a 1/2" drill bit to fit the jig saw blade in than followed a pencil mark I made using the card board circle that came with my sub as a template.
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  #117  
Old 12-03-2009, 07:52 PM
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Re: WK 10" Enclosure Dimensions

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Man Tim that's some great information! Thanks!!

Matt how did you manage to get the router so cheap??? I would love to invest in one, but need the cost to be low since I won't be using it a whole lot. I have a Circular Saw already and was going to do exactly what Timmy suggested by using another straight piece as a guide (saw a guy making shelves once the same way). Thanks again for the info guys!

You dont need a router to build a sub enclosure. A jig saw is your best tool for that, take your time and cut nice n slow following the line you marked out. Its always better to cut inside the line you drew since you can always sand away any excess wood and the sub fits nice n snug. With MDF you will be surprised how much material you can remove by hand using heavy grit sand paper, so if you dont have a power sander just be ready for a sore arm doing it by hand, but its easy and can be done.
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  #118  
Old 12-03-2009, 07:56 PM
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Re: WK 10" Enclosure Dimensions

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Originally Posted by TimmyB View Post
You dont need a router to build a sub enclosure. A jig saw is your best tool for that, take your time and cut nice n slow following the line you marked out. Its always better to cut inside the line you drew since you can always sand away any excess wood and the sub fits nice n snug. With MDF you will be surprised how much material you can remove by hand using heavy grit sand paper, so if you dont have a power sander just be ready for a sore arm doing it by hand, but its easy and can be done.
I have a jig saw. I've built 5+ enclosures using it for my circle cut-outs. I do just fine with it. Thing is, for my new enclosure, it's absolutely crucial that I have PERFECT circles (for the baffle/grill assembly). A router (with plunge attachment and Jasper Jig) is the only tool that can deliver that.
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  #119  
Old 12-03-2009, 08:27 PM
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Re: WK 10" Enclosure Dimensions

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I have a jig saw. I've built 5+ enclosures using it for my circle cut-outs. I do just fine with it. Thing is, for my new enclosure, it's absolutely crucial that I have PERFECT circles (for the baffle/grill assembly). A router (with plunge attachment and Jasper Jig) is the only tool that can deliver that.

I hear ya. I was just trying to let him know he doesnt need to go buy a router when using MDF. I bet I could make a nice circle by using a reciprocating saw blade alone with the end I grab with my hand wrapped in a rag. lol. But then again my middle name is MacGyver.
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  #120  
Old 12-03-2009, 08:28 PM
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Re: WK 10" Enclosure Dimensions

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I hear ya. I was just trying to let him know he doesnt need to go buy a router when using MDF. I bet I could make a nice circle by using a reciprocating saw blade alone with the end I grab with my hand wrapped in a rag. lol. But then again my middle name is MacGyver.
haha, it would have to be to try that!
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