whats better .5ohm or 2ohm?

[MyFartsStink 10+ year member]

Oh well, this forum is full of ****ing idiots anyways //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I don't think you know how a speaker works.

 

[badvlvo 10+ year member]

Heat at the coil will be the same, their resistance does not change based on the resistance at the amplifier.

If your amp can handle the lower resistance and your subs can handle the power I say .5 is the way to go.

 

[csu87 10+ year member]

so lets see..

running 2000watts at 2ohms is no different to my subs then 2000 at .5ohms? just want to be sure cause i got no money until august so i want these to last until then.

right now i have them running at .5ohms w/ ~2500 watts for around town beating and 3k for burping

 

[justin smith 10+ year member]

so lets think about jl's slash amps 1-4 ohms 1000wrms.....would 1,2 or 4 ohms be less stain on youre electrical or what

 

[Walled_Taurus 10+ year member]

so lets see..
running 2000watts at 2ohms is no different to my subs then 2000 at .5ohms? just want to be sure cause i got no money until august so i want these to last until then.

right now i have them running at .5ohms w/ ~2500 watts for around town beating and 3k for burping

Your current draw will almost double at .5ohm but if you have the voltage and don't care if its super clean run .5ohm. If you don't have the electrical and you want to get the most of the subs with out possible risk of damage to the amp obviously go with 2 ohm.

I had the electrical to back my Cactus 5k at .5ohm but did not feel like taking the chance so I ran it at 2ohm on 4 Pierce Audio 15inch WMDs D1 coils. It sounded great for daily, I might also mention the box was built to be very musical. But you get the point.

 

[DNick454 10+ year member]

My statement that resistance creates heat? I forgot how the laws of Physics don't apply to car audio in Oklahoma I'm not saying it will be a devastating difference, but it will be different.

Yes, resistance adds more heat, but you are not physically adding more resistance to the coils... you're simply arranging the coils in series instead of parallel so that the FINAL impedance is higher. The impedance of each individual coil isn't changing, just how you arrange them in the circuit. The only change is the load the amp sees and the power the subs receive. The subs will not get hotter by wiring them in series.

I understand what you mean though. But that would be the same amperage flowing through a higher resistor. Since the voltage stays constant, when the resistance increases, the amperage goes down, not the same. Higher impedance = less distortion and a more efficient/cool amp. The lower the impedance, the higher the output of the amp, but not necessarily double because of losses, and it is prone to a bit more distortion and heat from the amplifier.

Hope this clears everything up.

 

[csu87 10+ year member]

Yes, resistance adds more heat, but you are not physically adding more resistance to the coils... you're simply arranging the coils in series instead of parallel so that the FINAL impedance is higher. The impedance of each individual coil isn't changing, just how you arrange them in the circuit. The only change is the load the amp sees and the power the subs receive. The subs will not get hotter by wiring them in series.
I understand what you mean though. But that would be the same amperage flowing through a higher resistor. Since the voltage stays constant, when the resistance increases, the amperage goes down, not the same. Higher impedance = less distortion and a more efficient/cool amp. The lower the impedance, the higher the output of the amp, but not necessarily double because of losses, and it is prone to a bit more distortion and heat from the amplifier.

Hope this clears everything up.

kinda does thanks

 

[groundpound4200 5,000+ posts]

1000 watts is 1000 watts. laws of physics state that current x voltage= watts. At higher impedances there will be less amps and more voltage to maintain a certain wattage. I'm pretty sure that any differences in temp would be from physical characteristics of the different coils.

 

[dB-SPL 10+ year member]

I thought there was a sticky about this.. Nick probably has the best explanation. Not saying everyone else is wrong by any means. But whoever told you that running at higher impedance shortens the life could not be further from the truth. The ohm is the unit of measure of a devices opposition to the flow of electrical current. And to whoever mentioned Impediance Vs. Resistance.. Resistance is the opposition of D.C. current flow whereas Impedance is the opposition of A.C. current flow. Higher impedance = Less current = Less voltage. Also means less strain on ones eletrical system but at the cost of losing power (of course).. Hope that helps a bit as well..

 

[91Chevy 10+ year member]

Alright, I think I must have misunderstood some stuff. Sorry for being an *******..

A) Was fighting with my girlfriend (not that anybody cares)

B) Haven't slept in weeks

Forgives me //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[csu87 10+ year member]

Alright, I think I must have misunderstood some stuff. Sorry for being an *******..
A) Was fighting with my girlfriend (not that anybody cares)

B) Haven't slept in weeks

Forgives me //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Ill forgive if we get pics of gf

 

[91Chevy 10+ year member]

Ill forgive if we get pics of gf

We'll see about that //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[badvlvo 10+ year member]

Still no GF pics?

 

[phemps 10+ year member]

a lower impedance affects the amplifiers dampening ability slightly. more speaker hangover