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General Box Building Rules?
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<blockquote data-quote="KARLEON" data-source="post: 398585" data-attributes="member: 541893"><p>Come on guys, lets all pitch in on our knowledge and create a nice lil thread. If alot of you help out with all sorts of tips, maybe this can become a sticky. I know lots of people have general questions concerning box building, and i really think this could be the thread where they can find that information instead of typing in the same ol thing. So i'll contribute....</p><p></p><p><strong>Box Building materials</strong></p><p></p><p>I would recommend 3/4 MDF to build your box out of</p><p></p><p>Liquid nails (to have a tight bond)</p><p></p><p>I used Silicon caulk to make sure the inside of the box is air tight.</p><p></p><p>Jig saw to cut nice holes.</p><p></p><p>oh and also, you might want to ask Lowes or Home depot (where ever you purchase the wood from) to cut the wood for you. So all you have to do is put it together. That helped me out alot. But i recommend you having your box layout already planed so you know the exact dimensions of the wood that needs to be cut.</p><p></p><p><strong>Calculating airspace</strong></p><p></p><p>Length x Width x Height divided by 1728</p><p></p><p>after that, you will have to count for the sub displacement and port displacement (if you are designing a ported box)</p><p></p><p><strong>Box Bracing</strong></p><p></p><p>Basically, you CANNOT brace a sub enclosure enough. And for the the people who might not know exactly what bracing is referring too, im simply just saying reinforcing the box. The idea box should be able to survive what ever is thrown to it. A box that flexing and is not properly braced can loose some of the box. You want everything to be sealed tight and braced well. This is a very important part of your install.</p><p></p><p>Some ways to brace a box would be using L shaped brackets in the inside. Maybe left over pieces of MDF wood. Lots of liquid nails to make sure the wood is tightly bonded. Extra nails. Basically, this is a chance to show off your skills and come up with any way you can think of to brace the heck out of your enclosure. Oh and JL audio's website has some nice information on box building.</p><p></p><p>Box Tuning</p><p></p><p><strong>From by understanding, 28-33hz gives you great SQ in tuning. 34-38 is basically SQ with the ability to get loud. And 39 on up, is generally SPL. If i am wrong on this, someone please correct me. But thats just some of the knowledge i have learned. </strong></p><p></p><p><strong> </strong></p><p></p><p><strong>Oh and dont forget when using 3/4 mdf wood as bracing, dont forget to calculate that displacement also.</strong></p><p></p><p><strong>You can apply fiberglass resin to the inside of the box.</strong></p><p></p><p><strong>You can double baffle the front of your box. What is meant by double baffle is, placing another 3/4 sheet of wood over the front of your box. to make it extra thick.</strong></p><p></p><p><strong> </strong></p><p></p><p><strong>Well these are my tips. Im sure there are lots more tips out there, but I just wanted to show my support and get some more informative threads started on these boards so people can actually learn.</strong></p></blockquote><p></p>
[QUOTE="KARLEON, post: 398585, member: 541893"] Come on guys, lets all pitch in on our knowledge and create a nice lil thread. If alot of you help out with all sorts of tips, maybe this can become a sticky. I know lots of people have general questions concerning box building, and i really think this could be the thread where they can find that information instead of typing in the same ol thing. So i'll contribute.... [B]Box Building materials[/B] I would recommend 3/4 MDF to build your box out of Liquid nails (to have a tight bond) I used Silicon caulk to make sure the inside of the box is air tight. Jig saw to cut nice holes. oh and also, you might want to ask Lowes or Home depot (where ever you purchase the wood from) to cut the wood for you. So all you have to do is put it together. That helped me out alot. But i recommend you having your box layout already planed so you know the exact dimensions of the wood that needs to be cut. [B]Calculating airspace[/B] Length x Width x Height divided by 1728 after that, you will have to count for the sub displacement and port displacement (if you are designing a ported box) [B]Box Bracing[/B] Basically, you CANNOT brace a sub enclosure enough. And for the the people who might not know exactly what bracing is referring too, im simply just saying reinforcing the box. The idea box should be able to survive what ever is thrown to it. A box that flexing and is not properly braced can loose some of the box. You want everything to be sealed tight and braced well. This is a very important part of your install. Some ways to brace a box would be using L shaped brackets in the inside. Maybe left over pieces of MDF wood. Lots of liquid nails to make sure the wood is tightly bonded. Extra nails. Basically, this is a chance to show off your skills and come up with any way you can think of to brace the heck out of your enclosure. Oh and JL audio's website has some nice information on box building. Box Tuning [B]From by understanding, 28-33hz gives you great SQ in tuning. 34-38 is basically SQ with the ability to get loud. And 39 on up, is generally SPL. If i am wrong on this, someone please correct me. But thats just some of the knowledge i have learned. [/B] [B] [/B] [B]Oh and dont forget when using 3/4 mdf wood as bracing, dont forget to calculate that displacement also.[/B] [B]You can apply fiberglass resin to the inside of the box.[/B] [B]You can double baffle the front of your box. What is meant by double baffle is, placing another 3/4 sheet of wood over the front of your box. to make it extra thick.[/B] [B] [/B] [B]Well these are my tips. Im sure there are lots more tips out there, but I just wanted to show my support and get some more informative threads started on these boards so people can actually learn.[/B] [/QUOTE]
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