I am wanting to build my first box.......
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New member Username: Tigger76Portland, Oregon Post Number: 2 Registered: Mar-09 | Hello guys, I am new to the forums and am learning so much everyday by reading them. I am good with wood, but am lacking in the design department part. I found a progran that everyone says is good and have no clue how to use it. I will include as much info that I have. here goes. right now the subs are in those crappy prefabed ported boxes you buy at the local stereo shops in the area. I have been told that the boxes they are in are not good and they can be way better. Well here goes. 36 inches wide 40 inches deep 24 inches tall The subs are MTX 7500's. I have 6 of them. They are 4 ohm wired to 2 ohm. I have 3 MTX 81001's. 2 subs wired to each amp. They are getting about 900 watts rms? I can build any box as long as I have the designs to see from. Well guys I want to thank you for all your help. |
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Silver Member Username: TurnmatRacine, Wi Post Number: 939 Registered: Feb-07 | ported or sealed? |
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Silver Member Username: TurnmatRacine, Wi Post Number: 940 Registered: Feb-07 | what size subs? |
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New member Username: Tigger76Portland, Oregon Post Number: 3 Registered: Mar-09 | I though I had everything for everyone. the sub size are 12's and I am not sure about ported or sealed. I want whatever will make the ears bleed. Honestly. thanks again. |
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Gold Member Username: SouthernrebelMonroe, Louisiana Team Audible... Post Number: 7328 Registered: Mar-04 | What vehicle? I used to carry MTX, and the 7500's have some potential. |
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New member Username: Tigger76Portland, Oregon Post Number: 4 Registered: Mar-09 | It is a 1995 chevy suburban. |
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Silver Member Username: CozceSt. Louis ILLside, Pronounced: ... U.S.A. Post Number: 609 Registered: Mar-08 | http://www.reaudio.com/speaker_box/LPort_Box_Calc.html For ported. |
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Gold Member Username: DeadrabitMarionville, MO Post Number: 1377 Registered: Jun-07 | cozce he has 6 subs! not one |
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Silver Member Username: TurnmatRacine, Wi Post Number: 945 Registered: Feb-07 | 36 inches wide = 34.5 =30.5 40 inches deep = 38.5 =34.5 24 inches tall = 22.5 =22.5 = 13.7 cu ft before sub and port displacment I am just minimizing as i go. What do you guys think of for port area? Carstereo.com isnt letting me load it. |
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New member Username: Tigger76Portland, Oregon Post Number: 5 Registered: Mar-09 | M, I am new and have no clue what those numbers mean. |
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Silver Member Username: M0nstarToledo, OH U.S. Post Number: 187 Registered: Dec-08 | those numbers mean that you cant slap a box together, measure is, and say thats the volume enclosure your subs are in. you have to remember to subtract the thickness of the wood from each side. i.e. if you have a 36" wide box, and you constructed the box with 3/4" wood, you would have to subtract 3/4" from each side, because the sides of the box make the box....not 36" wide? |
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New member Username: Tigger76Portland, Oregon Post Number: 6 Registered: Mar-09 | Got it. |
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Gold Member Username: JakeyplaysbassSt. Louis, MO / ASU Post Number: 3569 Registered: Jul-05 | 6 12s won't fit in 24"x36", so you cant fire them back with those specs. If you fire the subs up you could get it to work if you stagger the subs and fire the port back. What i would try and do is run 3 rows of paired subs up each with its own port in the middle firing up. It would be like this if your looking down on your box... 0 [] 0 0 [] 0 0 [] 0 |
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Gold Member Username: Hittin1TEAM REVOLUTIONLake Charles... Post Number: 2734 Registered: May-07 | best idea so far^^^ great job Jake |
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New member Username: Tigger76Portland, Oregon Post Number: 7 Registered: Mar-09 | that's how they are right now. I know I will have to fire them up. the 3 boxes are just like shown. I was reading that the preffabed boxes are jumk and that by building a box it will hit harder and be better for the subs. |
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Gold Member Username: Hittin1TEAM REVOLUTIONLake Charles... Post Number: 2735 Registered: May-07 | so long as they are built to specs for those subs |
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Diamond Member Username: WingmanaliveWww.stainles... .ecrater.com Post Number: 20038 Registered: Jun-06 | How about an isobaric design? |
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Silver Member Username: TurnmatRacine, Wi Post Number: 948 Registered: Feb-07 | 2 loud 4 you i was thinking to myself and posting what i had come up with and letting other people chime in and improve on what i was going with. Jake papa that is what i was thinking. You put the subs on top and the port back |
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New member Username: Tigger76Portland, Oregon Post Number: 8 Registered: Mar-09 | Oic. it looks like what I have now with the prefabbed boxes. I dont understand the staggered though? |
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Gold Member Username: SouthernrebelMonroe, Louisiana Team Audible... Post Number: 7332 Registered: Mar-04 | Why only 36" wide? You can easily fit 49" wide boxes in suburbans. |
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Silver Member Username: TurnmatRacine, Wi Post Number: 953 Registered: Feb-07 | I was just going off what he said. |
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New member Username: Tigger76Portland, Oregon Post Number: 9 Registered: Mar-09 | sorry guys i think its supposed to be 4 ft wide. |
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New member Username: Tigger76Portland, Oregon Post Number: 10 Registered: Mar-09 | i would like it to be from wheel well ti wheel well. |
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Silver Member Username: CozceSt. Louis ILLside, Pronounced: ... U.S.A. Post Number: 610 Registered: Mar-08 | I can't read. |
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Bronze Member Username: Tigger76Portland, Oregon Post Number: 11 Registered: Mar-09 | I am really sorry guys about not getting the measurements wrong. The wide measurement is 48 inches. I really am sorry. I know what its like to try to help someone that doesn't have there stuff together. |
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Silver Member Username: TurnmatRacine, Wi Post Number: 955 Registered: Feb-07 | Outside dimensions 48 wide 37 deep 15 tall Inside dimensions 46.5 wide 35.5 deep 13.5 tall = 12.896 cu ft - .54 cu ft sub displacment = 12.356 cu ft For port you could use 4 6" aero ports at 13.2 inches long |
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Bronze Member Username: Tigger76Portland, Oregon Post Number: 12 Registered: Mar-09 | why only 15 tall, why not use the full space available? I am just wondering. thank you |
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Silver Member Username: TurnmatRacine, Wi Post Number: 957 Registered: Feb-07 | Your subs only need 12 cu ft after displacment. You dont need to use the max dimensions, your box would be way bigger then it needs to be. And you also run a higher risk of damaging your subs by bottoming them out, over excursion. When your box is alot bigger then recommended your efficiency increases. If i am not mistaken your subs will not need so much power to get them to move to there max. With the extra power you will push them past there limits thus damaging them. Please correct me if i am wrong guys. |
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Bronze Member Username: Tigger76Portland, Oregon Post Number: 13 Registered: Mar-09 | ic. I am new so I have a lot of questions. what are areo portsand where do I get them? could you send me a drawing? I can build it if I have one. thank you for all your guys help. |
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Gold Member Username: JakeyplaysbassSt. Louis, MO / ASU Post Number: 3570 Registered: Jul-05 | "How about an isobaric design?" I actually "lol'd" paul. Great idea for a number of people on the forum... this guy, not so much. |
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Bronze Member Username: Tigger76Portland, Oregon Post Number: 14 Registered: Mar-09 | m, can you design me one for 4 subs also but use the full higth but a shorter depth? |
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