When to double baffle or just brace
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Silver Member Username: 30hrtzRaleigh, Nc U.s.a Post Number: 187 Registered: Mar-06 | is there a rule of thumb or number of square inches on a panel that determines when you need bracing or double panelling?the biggest is my back panel at 12.5x22.5 i havent braced it,does it need it?or just double it. |
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Silver Member Username: Kingandsons07Lincoln, Nebraska U.S.A Post Number: 542 Registered: Feb-07 | mine is 9CUFT here http://s274.photobucket.com/albums/jj272/kingandsons07/ |
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Platinum Member Username: BestmankindIM THE REAL SLIM SHADY Post Number: 16651 Registered: Oct-05 | 12.5x22.5 is a pretty big piece not to brace. you should just put a brace on it. how much power and what kinda sub is this box for? |
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Silver Member Username: 30hrtzRaleigh, Nc U.s.a Post Number: 188 Registered: Mar-06 | ya chad i thought so.i'll put a brace from front to back and maybe from that brace over to the side.its for a 07 p3 on 600 watts.actually thats 1/2 the enclosure other half is same so 2 12s on 1215 watts. |
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Platinum Member Username: BestmankindIM THE REAL SLIM SHADY Post Number: 16661 Registered: Oct-05 | i assume they are in separated chambers. brace should be fine. no need to double baffle it. it will just make the box heavier. |
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Gold Member Username: SouthernrebelMonroe, Louisiana 2 DD3515s, 2... Post Number: 5793 Registered: Mar-04 | Depending on how the subs are positioned on the baffle, you may not even have to brace it. For instance, this box really has no major need for bracing. Unless you are using a very high powered sub.  That box is 2.25cuft tuned to ~36hz. It is the common 12" ported box I build at the shop. The port wall acts as a brace. |
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Gold Member Username: JtownTeam Revolution, Texas Post Number: 1598 Registered: Mar-07 | why do you commonly port to the side canaan? |
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Gold Member Username: SouthernrebelMonroe, Louisiana 2 DD3515s, 2... Post Number: 5794 Registered: Mar-04 | In many vehicles, loading the port toward a wall or back hatch is great. That box works great in an SUVs, small trunks, and even small trucks. It is a VERY versitile box. Also, a box like that allows you to build the port w/ no L-bends. That helps w/ air-flow. |
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Silver Member Username: 30hrtzRaleigh, Nc U.s.a Post Number: 189 Registered: Mar-06 | yup,Chad,they are in seperat chambers,each is 1.8cuft net tuned to 35hz. |
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Platinum Member Username: BestmankindIM THE REAL SLIM SHADY Post Number: 16690 Registered: Oct-05 | if that is the case, then canaan is right. since you have a port in each chamber, that will act as a brace itself. |
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Platinum Member Username: BestmankindIM THE REAL SLIM SHADY Post Number: 16691 Registered: Oct-05 | that is if the port are slot ports. |
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Silver Member Username: 30hrtzRaleigh, Nc U.s.a Post Number: 190 Registered: Mar-06 | well i braced it anyway,i got pics before bracing but not after.just need to resize them to getem on here.thanks for the help,the box is SOLID.will post pics tommorrow |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12715 Registered: Jul-05 | doesnt hurt anything if u double baffle or brace - just makes it stiffer\better... |
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Gold Member Username: MixmastaspigCanada, Canada Canada Post Number: 1375 Registered: Sep-05 | Hey heres a quick question as I was thinking about bracing as well. My box is a slot port with the slot right down the middle and the subs on either side. I am going to double up on the baffle, should I worry about bracing? Box is (after subs and port) 4.1cu feet. The box will look like the pic below, awesome I know, lol. _____________ | __ | | __ | ( ) | | ( ) |_____|_|_____| The subs will be seeing 3krms each.... Don't mean to jack a thread but no point on starting a new one! |
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Gold Member Username: MixmastaspigCanada, Canada Canada Post Number: 1376 Registered: Sep-05 | Wow, that design up there sucks...lol |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12718 Registered: Jul-05 | i cant figure out what im seeing - do 1 on paint or sketch up..... |
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Gold Member Username: MixmastaspigCanada, Canada Canada Post Number: 1378 Registered: Sep-05 | Here's a better idea:  |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12719 Registered: Jul-05 | its always beneficially if u can brace somewhere but sometimes situations just make it difficult to do so i have done similar box like that with no bracing since the port walls r like braces & it worked fine... |
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Gold Member Username: •cam•BC Canada Post Number: 1600 Registered: Nov-06 | To the OP: Something to remember: Bracing a panel will make it far stronger than doubling that panel would have. |
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Gold Member Username: MixmastaspigCanada, Canada Canada Post Number: 1380 Registered: Sep-05 | That's what I was thinking Rovin as the ports go back 20.75" and the total box size is 25" deep, so thats some good bracing right there. |
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Silver Member Username: 30hrtzRaleigh, Nc U.s.a Post Number: 193 Registered: Mar-06 | mike thats what my box looks like.ports go back and "L" off 10 more " to either side.its that lonely back panel i was worried about.i got a divider inbetwen the ports also,so that helps but i still had 23 or so inches along the back of each side so i ran 1 small piece of mdf from the front panel just behinde the outside edge of each sub to the back panel,should be good now. |
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Gold Member Username: MixmastaspigCanada, Canada Canada Post Number: 1384 Registered: Sep-05 | My sub box is 31" wide so I think I will need something along the back of that...maybe just run something across the middle along the back side inside the box....... |
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Silver Member Username: 30hrtzRaleigh, Nc U.s.a Post Number: 194 Registered: Mar-06 | mine is 46 wide.sits in bed of truck,subs and port fire thru 32 inch by 12 inch blowthru.will get pics up later today. |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12721 Registered: Jul-05 | this a box i did some mths ago similar to your design Mike   ... |
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Gold Member Username: MixmastaspigCanada, Canada Canada Post Number: 1391 Registered: Sep-05 | Looks nice! I just have to figure out where I am going to run my speaker wire for my subs, dual 2ohm and I'm going for a .5ohm load. My box practically takes up my entire trunk and I'm not sure if I am going to put bolts on one side or the other. Can't put them on the top as there it about 1" of space or less above my box to the top of the trunk. Maybe I'll just do the very back of the box in the middle.....; Maybe just run the wires through the port, lol, would that change anything in the tuning?? |
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Gold Member Username: JtownTeam Revolution, Texas Post Number: 1615 Registered: Mar-07 | hey canaan, would you mind working with me on a box design? |
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