Whats better ?Quick!

[Dino209]

Please help what sub is better. the on with 2-ohms :Alpine sub with 2-ohms (http://caraudiosecurity.com/shop/product/products_id/3890.html)

Or the one with 4-ohms:Alpine sub with 4-ohms (http://caraudiosecurity.com/shop/product/products_id/3891.html)

Can i have a prmpt answer please as i am about to order two of which ever one is the best
Thanks alot for all your help

[Scott]

its the same sub but with different resistance in the coils smileys/smiley5.gif

what amp are you running them from? Can it take 2 ohm load? 1 ohm load?

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

if amp can take 2 ohm then get the 2 x 2ohm subs as per this (http://www.rockfordfosgate.com/rftech/wiringwizard.asp?WoofQty=2+woofers&WoofImp=Dual+Voice+Coil+-+2+ohms+x+2&image.x=6&image.y=19&image=Submit)

if the amp can taek 1 ohm load then get 2 x 4ohm as per
this (http://www.rockfordfosgate.com/rftech/wiringwizard.asp?WoofQty=2+woofers&WoofImp=Dual+Voice+Coil+-+4+ohms+x+2&image.x=12&image.y=5&image=Submit)

but the subs are the smae bar the coil resistance allowing different loads to be shown to the amp hence different power being given to them

[Dino209]

I don't really get the whole Ohm thing thats why im in such a confusion but anyway this is the amp im running at the mo.which would you say would be better for it Alpine amp (http://caraudiosecurity.com/shop/product/products_id/3574.html)
thnx

[Scott]

looks like it will only run at 2 ohm at its lowest in which case the dual 2 ohm coils will you allow to run at 2 ohms and get most power out of the amp, use thediagrams to help you wire correctly when you have them

[Dino209]

out of interest scott is the reason i should get the 2-ohm version is because my amp is good/powerful enough to power both subs?
thanks

[Scott]

right what happens is this in simple terms.Ohms is a measure of resistance. By showing the amp a lower resistance it can flow more power to it. Thats one of the reasons multiple coils are used, by wiring in different ways you can show a lower resistance to the amp. That link i posted is excellent for showing this.

In your case the amp will go as low as 2 Ohm stable. By choosing the dual 2 ohm subs you cna wire them in such a way that you will end up with 2 wires and a 2ohm load to show to that amp. This will give you more power to the subs.

[Dino209]

Thankyou for that.
sorry i don't mean to keep naging you but if you say the lower the resistance is better e.g 2 ohms then whats the point of even making a sub with 4 ohms as it won't be as powerful as it will have more resistance
Thanks

[Scott]

well by running something at lower ohms you can get more power, this comes at a cost. By running more power components get much hotter and as such things have to be uprated to cope with this, things like cooling fans need to be added and all these add to more costs. RUnning more output power means more drain on teh battery to run this to. Its cheaper to knock together a 4 ohm stable amp than a good 2 ohm or 1 ohm stable amp,.

On the sub side of things there will always be 1,2,3,4,6 or even 8 ohm versions. Reason being wiring configuration as shown above in the RF tech diagrams. By having the different ratings then wiring can be changed to allow further addition while keeping the smae load at the amp