question about ohms

[yne721 10+ year member]

what's the difference between 4 ohms and 2 ohms? does 2 hit harder than 4? or is 2 play deeper bass than 4?

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[Ignatowski 5,000+ posts]

nope the SQ is the same between 2 or 4 ohm sub's

the difference is primarly for wiring ease to different amps

 

[yne721 10+ year member]

so if I have an Orion 600D Mono Amplifier, and i'm trying to choose between the Punch Stage 3 12'' Subwoofer should I get the 2 Ohm sub or the 4 Ohm sub?

 

[Chevillac 5,000+ posts]

Just one of them? Get the dual 2 ohm, set gains correctly.

 

[johnecon2001 5,000+ posts]

Just one of them? Get the dual 2 ohm, set gains correctly.

That amp is stable to one ohm.. if you're going to run two subs.. buy two dual 4's.

 

[RandyJ 10+ year member]

Amplifiers operate at certain resistances. Think of resistance, current and voltage as a water hose. The size of the water hose is what is restricting the amount of current from passing through with the voltage being how fast it comes out. If you make the hose bigger(less resistance), more water(current) is able to come out but with less voltage.

Now, if you got the analogy above, know this. The circuitry on an amplifier is build to handle a certain impedance (another word for resistance). With less resistance comes more power, and an unfortunate byproduct of power is heat. So if the amplifier sees a load that is too low (which is dependant on the way you wire your speakers) then it could potentially damage the amplifier. An amp can, however, run at any impedance higher than what it is rated, because more resistance=less power=less heat. So what you should do is read the specs for your amplifier, then chose from that what type of subwoofer you should buy. If your amplifier puts out maximum power at 2ohms, then buy a dual 1ohm, dual 4ohm, single 2ohm, or any other driver with a VC config that allows a 2ohm final operation.

So from reading this you know that generally (until you get deep into the science of it), resistance will not play a part in how a speaker sounds. The voice coils on any speaker have a certain resistance, the lower the resistance they show, the more current that can flow, just like in the quoted example. The more resistance, the less current.

 

[RandyJ 10+ year member]

BTW, an Ohm is a measure of resistance in case you didnt know.

 

[PV Audio 5,000+ posts]

whats up lemanscoleman

 

[RandyJ 10+ year member]

Nothin much man. I need to do HW but I'm too **** lazy.

 

[PV Audio 5,000+ posts]

lol same shit here. postin pics in my worklog while i have a physics test tomorrow //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[Chevillac 5,000+ posts]

That amp is stable to one ohm.. if you're going to run two subs.. buy two dual 4's.

No I meant just one of the power stage 3, cuz thats what it seemed like he meant. And if he meant 1 of those get the dual 2 ohm version and run it at 1ohm.

 

[yne721 10+ year member]

so if i'm running two subs, do 4ohm subs, but if i'm running 1 sub, get a 2 ohm sub?

 

[JimJ 5,000+ posts]

so if i'm running two subs, do 4ohm subs, but if i'm running 1 sub, get a 2 ohm sub?

It depends entirely on the amp...

 

[yne721 10+ year member]

The Orion 600D: 1200 watts Class D Mono Amp

* RMS Power Range : 250-600 Watts

* Number Of Channels: 1

* Maximum Power: 1200 Watts

* Low Frequency response: 10 Hz

* High Frequency Response: 250 Hz

* Built In Crossovers: Yes

Channel Separation: Yes

 

Features

 

* 1 X 250 @ 4 Ohm

* 1 X 400 @ 2 Ohm

* 1 X 600 @ 1 Ohm

* Selectable 12/24 dB/octave variable low-pass filter

* Intelli Q bass optimization circuit and remote gain option

* Separately adjustable, selectable variable high-pass filter with proprietary Copy/Master control circuit for RCA outputs

* Copy/Master feature supports gain and crossover adjustment matching in multiple amp

* Switchable phase invert function

* Allows external bridging of two matched gain amplifiers

* Heavy gauge direct-wire high current satin finish power and speaker terminals

This is the amp i ordered. and i'm trying to figure out whether or not to buy a 2 or 4 ohm sub, i already know what sub i'm getting, but a guy at circit city told me that i need to get two 4 ohm subs or 1 2 ohm sub, and i just want to make sure that's correct before i do it.

Edit: I was thinking about getting 12'' Type R(s) so if that's what I was getting, is it true that if i wanted to go dual subs, i need to get 4ohm subs, and if i just want a single sub I need to get a 2 ohm sub?

sorry i'm so dumb about car audio, i'm tryin to learn though that's why I have so many questions.

 

[Chevillac 5,000+ posts]

This is the amp i ordered. and i'm trying to figure out whether or not to buy a 2 or 4 ohm sub, i already know what sub i'm getting, but a guy at circit city told me that i need to get two 4 ohm subs or 1 2 ohm sub, and i just want to make sure that's correct before i do it.
Edit: I was thinking about getting 12'' Type R(s) so if that's what I was getting, is it true that if i wanted to go dual subs, i need to get 4ohm subs, and if i just want a single sub I need to get a 2 ohm sub?

edited, But it still depends on what you want 1 or 2 subs, 2 would give you ~300watts to each,which is fine, when you first asked the question It seemed like you were deciding between 1 2ohm or 1 4ohm. But to get the 1 ohm load (most out of) that amp, it would take one dual 2 ohm, or 2 dual 4 ohm subs.