why can't you wire subs 1ohm

[Mr. C 10+ year member]

why can you wire 2- dual 4 ohm subs to 1ohm but 4 dual 4 ohm can't be 1ohm?

When you put two speakers or voice coils in parallel, you cut the ohm load in half basically. Two 4 ohm coils in parallel becomes a single two ohm load.

When you put two speakers or voice coils in series, you double the ohm load. Two 4 ohm coils in series becomes a single eight ohm load.

Let's look at your 2 examples. Two dvc 4 subs all in parallel:

Sub 1 Sub 2

4 4 4 4

2 2

1 --------------- 1 ohm load

Sub 1 Sub 2 Sub 3 Sub 4 (in parallel)

4 4 4 4 4 4 4 4

2 2 2 2

1 1

.5 ---------------------------- half ohm load

Sub 1 Sub 2 Sub 3 Sub 4 (in parallel)

4 4 4 4 4 4 4 4

8 8 8 8

4 4

2 ---------------------------- 2 ohm load

You can play with the numbers and do the math, but the closest you'll get to 1 ohm with 4 dual 4 subs is either half ohm or 2 ohms.

Hope this helps. I do not have to work tomorrow and I've got Patron in my reach. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[hemi=22s 10+ year member]

u cant wire only one vc on a sub and they dont cancel one another out

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp

http://www.the12volt.com/caraudio/boxcalcs.asp

heres two diagrams how to figure them out

the rockford one wont show u .5 ohm configs cause no .5 stable amps when they made the wiring wizard

 

[NMBR1SPT 10+ year member]

u cant wire only one vc on a sub and they dont cancel one another out

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp

http://www.the12volt.com/caraudio/boxcalcs.asp

heres two diagrams how to figure them out

I can't remeber without lookin it up but I thought parallel or series made it so that it cancelled the other vc out? so a dual 4 would stay a 4:crap:

 

[icpurplepplalot 5,000+ posts]

I can't remeber without lookin it up but I thought parallel or series made it so that it cancelled the other vc out? so a dual 4 would stay a 4:crap:

No, a dual 4 will either be 2 or 8

 

[NMBR1SPT 10+ year member]

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif:crap: **** so will my merlin MD2D run .05ohm? or will it be enough at 2ohm on 4 10in dvc4's type R's

 

[rockmo 10+ year member]

I can't remeber without lookin it up but I thought parallel or series made it so that it cancelled the other vc out? so a dual 4 would stay a 4:crap:

well the only way to learn is first hand experience, get your subs wired up the way you think they need to be, and grab a dmm and check the ohm reading at the amp end and you will see that it isnt possible to cancel out the other coils.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[icpurplepplalot 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif:crap: **** so will my merlin MD2D run .05ohm? or will it be enough at 2ohm on 4 10in dvc4's type R's

I have never ran a md2d so I don't know if it will run .5

 

[teen 10+ year member]

if its a decent amp and it doesnt want to run .5ohms, it should just go into protect mode. id try wiring it down to .5ohms and see if it works.

 

[01 S 10 10+ year member]

start lookin for another md2d... //content.invisioncic.com/y282845/emoticons/peace.gif.2db28b618ed8d1964ebbe2f5021d2c39.gif

 

[bose301s 5,000+ posts]

For all of you saying that it is Ohm's law, you are incorrect. Ohm's law relates voltage, current and resistance together, it does not however tell you how resistors combine. V=IR is Ohm's law, it states nothing about series or parallel resistances, just that voltage is a product of the current and resistance.

 

[Lakota 5,000+ posts]

When you put two speakers or voice coils in parallel, you cut the ohm load in half basically.

Where you must be careful with this is that this applies only for two resistances that are the same.

 

[Lakota 5,000+ posts]

If you want to calculate only two resistances in parallel the equation is (R1*R2)/(R1+R2)

 

[RKPsk8er 10+ year member]

what if you were to wire it down to .5 ohms and add a .5 resistor in series before it goes back into the amp?

 

[bose301s 5,000+ posts]

what if you were to wire it down to .5 ohms and add a .5 resistor in series before it goes back into the amp?

That resistor will use 1/2 of the power the amp generates. P=I^2 * R, so I through both is the same, R is the same meaning that 1/2 of the power will go to the subs, the other 1/2 to the resistor.

 

[profundus-sanus 10+ year member]

how hard is it to understand.

2 d4's all in parallel = 1 ohm

1 /2 =.5 1+1=2