need help with figuring out box tuning for midbass - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-05-2004, 08:47 PM   #11
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playing multiple freaquencies has more to do with its ability to carry multiple signwaves, which is part of the reason i bought this one, it can do that
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Old 02-06-2004, 12:20 AM   #12
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ok ive figured it out, i need a box that is 3.4 cubic liters, and for the best sound, the sides have to have a size ratio of.6:1:1.62 to each other, that isnt a must but it would help. now with this box design and the crossover on the amp, the speakers will get a cutoff slope of 21db/octave at 70 hz. the only part now is to figure out which box dimensions to use, which i still need help on.
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Old 02-06-2004, 03:04 AM   #13
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I understand what you mean by the graph, all I'm saying is that you don't need that speaker to play such a wide range, that'* why you have a mid and a tweet, no need for you mid bass to play 5k. It will reproduce up to that cleanly for those that don't have an extra mid like you, they can just set the tweet for 5K and above.

Man 3.4 cubic liters is a decent size box there, that'* not fitting in kicks. where you plan on putting it?
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Old 02-06-2004, 03:28 AM   #14
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Hearing you talk about playing a mid bass to 5000hz (isn't even HIGH BASS) sounds like playing a subwoofer to 1000hz.
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Old 02-06-2004, 09:18 AM   #15
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i still gotta figure some of that stuff but taylor ur probly right, ill just have to see what it sounds like when i get them in there, but i didnt spend the money on these just to feed them a few hundred htz of sound, im also going to see what the response of my midrange is, i might not need it.
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Old 02-06-2004, 12:14 PM   #16
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i took a look at the kind of space im gunna be dealing with this morning and it doesnt look fun. the only place i can put the enclosure is under the dash, which means its gunna have to be wedged shape with a lot of the box tucked under the dash. This might require some modification to the panels that hold the wires under the dash. im gunna make up some mock boxes on my next day off
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Old 02-06-2004, 02:44 PM   #17
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you never said why the box has to be so big, your link there used them free air. I agree that they should be sealed for tighter response but you don't need to go so big. You could build some small boxes and maybe fit them under the seat, or maybe under the dash by your feet.

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...but i didnt spend the money on these just to feed them a few hundred htz of sound...
That'* what a dedicated mid bass speaker is for. you never said what subs your getting next are. just curious and good luck with your project
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Old 02-06-2004, 09:40 PM   #18
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im getting two resonant engineering hc 15s, they have a one way xmax of 23 mm! im hooking them up to 2 hifinics brutus 1500d mono amps, which im getting with my income tax money. I want to be able to compete and these should do the job. but right now i have to figure out how to magnetically sheild these midbasses because of my limited placement options, the magnets on these start to mess with my computer screen from almost a foot and a half away, so this is a must, would anyone know where i can get the right materials to do this
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Old 02-07-2004, 10:06 AM   #19
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ive found some magnets for my magnetic shielding they're 90 cents each at partsexpress.com
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Old 02-10-2004, 12:13 AM   #20
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i got a better look at the car today and the only place the speakers can go on the driver'* side is under the fuse box, which means the box is probly gunna be a square shape with a rectangular attatchment just to stretch out some of the air space i need to make it fit, ill probly do something similar on the passenger side but im not sure
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