six 12ohm subs.
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Lexus Test Driver
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From: New York
six 12ohm subs.
let me just ask this. if i want 6 subs in my truck, they would have to be 12ohms each wired down to 2 ohms mono right?
i was looking at this one type of sub and it said it had a dual 4ohm voil coil. so thats only 8ohms right?
i need to come across a 12 ohm sub if what i said above is correct.
any comments please.
i was looking at this one type of sub and it said it had a dual 4ohm voil coil. so thats only 8ohms right?
i need to come across a 12 ohm sub if what i said above is correct.
any comments please.
Tech Guru
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From: Texas
correct me if i am wrong, but I have not seen a 12 ohm sub ever before. Beside, why would you want to do that?
you will not be able to sell them individually since no one can use them in individual or dual set up hee hee.
look like you want to build the system for show, then it would make sense to get 3 amps to show also?
6 sub, 6 ohm each, use 2 mono amp, 3 sub for each amp (2ohm).
or 4ohm each, 3 mono amp, 2 sub for each amp (2ohm).....
ye, 6x12ohm in parallel will give you 2ohm, but need 6 times the power to drive to get to the same level of a single 2ohm sub/amp
you will not be able to sell them individually since no one can use them in individual or dual set up hee hee.
look like you want to build the system for show, then it would make sense to get 3 amps to show also?
6 sub, 6 ohm each, use 2 mono amp, 3 sub for each amp (2ohm).
or 4ohm each, 3 mono amp, 2 sub for each amp (2ohm).....
ye, 6x12ohm in parallel will give you 2ohm, but need 6 times the power to drive to get to the same level of a single 2ohm sub/amp
Last edited by BananaGS; Apr 23, 2002 at 02:16 PM.
Driver
Joined: Dec 2001
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From: New Orleans, LA
You could wire the VC's of each DVC 4 ohm speaker in series. That would give you an 8 ohm load. Then wire each speaker in parallel. You will end up with a 1.33 ohm load. Plenty of amps can handle that load well. You could run an overly stable amp that puts out max power @2ohms, one that puts out max power at 1ohm and lose a little bit of power, or an an like the JBL1200.1 that will put out the same power anywhere between one and two ohms. If you bring multiple amps into the picture, you've got a whole new ballgame. 6 subs sounds like you're planning on competing, and if that's the case, I see no reason to utilise only one amp.
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Lexus Test Driver
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From: New York
oh boy, all good points, but to cear it up, its not for show, just plain looks. i just recently bought an audiobahn 3201x amp. 840watts rms mono 4ohms. and a triple 12'' audiobahn sealed sub. the new one with black leather. ok so this is why im thinking there are 12ohms subs. my triple 12'' sub box is 4ohms. so what gives? oh and i dont want to buy another amp.
ps if i do decide to get another three subs from another box, i will have an empty triple black leather sub box for sale. brand new. you can see it at audiobahninc.com
ps if i do decide to get another three subs from another box, i will have an empty triple black leather sub box for sale. brand new. you can see it at audiobahninc.com
Driver
Joined: Dec 2001
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From: New Orleans, LA
I'm still unclear as to whether he wants 3 or 6 subs, as well as whether he's getting another box (make sure all the subs share the same airspace, i.e don't put 3 in a 4ft^3 box and 3 in a 3ft^3 box), else you'll get different frequency responses/Qtc, maybe some cancellation.
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Lexus Test Driver
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bababooey, i want 6 subs! is that clear, lol 
also i understand that i need all the same air space. with that said, can someone help me with caulating how to determin air space. what is the mathimatical formula>? i knew this a while back, but forgot it.
also i understand that i need all the same air space. with that said, can someone help me with caulating how to determin air space. what is the mathimatical formula>? i knew this a while back, but forgot it.
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Lexus Test Driver
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Originally posted by lisnup65
Dual 6 ohm subs are common. Series the voice-coils for a 12 Ohm driver. This was were JL Audio shinned a few years back.
Dual 6 ohm subs are common. Series the voice-coils for a 12 Ohm driver. This was were JL Audio shinned a few years back.
then to answer bababooey again. if i cant find 12 ohm subs sold individully, i would go out and buy another triple 12' sub box, and then just take the speakers out of it. so then after i would have an empty box sitting around. (for sale) lol
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From: WI
Originally posted by DJ SprinklesNJO
do you mean dual 6ohm voice coil subs? is that how there are such things as 12 ohm subs?
then to answer bababooey again. if i cant find 12 ohm subs sold individully, i would go out and buy another triple 12' sub box, and then just take the speakers out of it. so then after i would have an empty box sitting around. (for sale) lol
do you mean dual 6ohm voice coil subs? is that how there are such things as 12 ohm subs?
then to answer bababooey again. if i cant find 12 ohm subs sold individully, i would go out and buy another triple 12' sub box, and then just take the speakers out of it. so then after i would have an empty box sitting around. (for sale) lol
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From: WI
Originally posted by DJ SprinklesNJO
bababooey, i want 6 subs! is that clear, lol also i understand that i need all the same air space. with that said, can someone help me with caulating how to determin air space. what is the mathimatical formula>? i knew this a while back, but forgot it.
bababooey, i want 6 subs! is that clear, lol
also i understand that i need all the same air space. with that said, can someone help me with caulating how to determin air space. what is the mathimatical formula>? i knew this a while back, but forgot it.
I.E.
An enclosure that is a perfect square 1 CU' will have 12x12x12 of internal airspace. External with 3/4" wood will be like this: 13.5x13.5x13.5.
The math shows how important it is to subtract the wood.
12x12x12=1728/1728= 1 Cu'
13.5x13.5x13.5=2460.375/1728= 1.4238 CU'
GL
Driver
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From: New Orleans, LA
JL's dual 6 ohm config was just a clever way of getting people to buy three of their subs, IMO...
First of all, I can't think of any modern 12ohm SVC subs. It would be a very stupid move for a company to do that.
No offense, but I still don't quite understand how many boxes you have, if the boxes you have are prefab/custom made/one of each, etc...
Someone may find a way to do it, but you're not going to be able to find 6 subs that will yield a single 4 ohm load. It's just not something common to run 6 subs with a single amp. I think you may want to look into getting another amp, or if looks are THAT important to you, a sub setup that looks good using fewer than 6 woofers. In my opinion, a single sub setup can look badass. Just get something like an Eclipse Ti/IDMAX/Brahma, mount it with the vent facing out, and use creativity to make it look nice. Hell, for the money you would spend on six subs, you could build a badass looking plexi box.
First of all, I can't think of any modern 12ohm SVC subs. It would be a very stupid move for a company to do that.
No offense, but I still don't quite understand how many boxes you have, if the boxes you have are prefab/custom made/one of each, etc...
Someone may find a way to do it, but you're not going to be able to find 6 subs that will yield a single 4 ohm load. It's just not something common to run 6 subs with a single amp. I think you may want to look into getting another amp, or if looks are THAT important to you, a sub setup that looks good using fewer than 6 woofers. In my opinion, a single sub setup can look badass. Just get something like an Eclipse Ti/IDMAX/Brahma, mount it with the vent facing out, and use creativity to make it look nice. Hell, for the money you would spend on six subs, you could build a badass looking plexi box.
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Lexus Test Driver
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lisnup65
how would you caculate the air space if the box wasnt perfecty square. lol oh yea thanks for the first equation. also in that equations do you always devide by 1728? some of it was unclear.
how would you caculate the air space if the box wasnt perfecty square. lol oh yea thanks for the first equation. also in that equations do you always devide by 1728? some of it was unclear.
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Originally posted by DJ SprinklesNJO
lisnup65
how would you caculate the air space if the box wasnt perfecty square. lol oh yea thanks for the first equation. also in that equations do you always devide by 1728? some of it was unclear.
lisnup65
how would you caculate the air space if the box wasnt perfecty square. lol oh yea thanks for the first equation. also in that equations do you always devide by 1728? some of it was unclear.
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Lexus Test Driver
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From: New York
oh yea, duh that makes sence. it is simple mathematics, but you did loose me alittle in ur explanasion. now all i have to do is figure out what the dimensions are of my box im plannin on making. its not just one angled wall. there are many. the front row of 6 subs will look like steps. laying down. i have a drawing of it in Paint program on the computer, but i dont know how to post it in here. i can however email it. so if you want a pic of it, for a better understanding of it, let me know. also can anyone tell me how to post pics of drawings please.
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