Is there any difference running 4 or 2 ohms?

[funkdoktor 10+ year member]

i have an amp that can push 1000w rms in 2 and 4 ohms...is there any difference between the two?....will the amp perform better running in 2 or 4?.....(i mean better like run cooler, more efficient...ect.)....thanks guys.//content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

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[funkdoktor 10+ year member]

nobody?

 

[excluesiveonez 10+ year member]

doesnt the pdx put out its rated rms at anywhere between 1 to 4 ohms?

 

[bushtree 10+ year member]

Run it at 4ohm.. It will be easier on your electrical system..

 

[funkdoktor 10+ year member]

doesnt the pdx put out its rated rms at anywhere between 1 to 4 ohms?

i only see 2ohm and 4 ohm ratings on the box so not too sure....i might have to check up on that.

 

[reed dollaz 10+ year member]

the lower the ohm level is set the more voltage youll be pulling. but did you say it runs at 1000w at 2 AND 4 ohms? why is that? wouldnt it be something like 500 at 4ohm and 1000 at 2ohm. never seen an amp put out the same wattage on two different ohm levels

 

[Qbenjamin 10+ year member]

the lower the ohm level is set the more voltage youll be pulling. but did you say it runs at 1000w at 2 AND 4 ohms? why is that? wouldnt it be something like 500 at 4ohm and 1000 at 2ohm. never seen an amp put out the same wattage on two different ohm levels

Have you never heard of the following?

JL slash series (1.5-4ohms same power)

Phoneix Gold Xenon (1-4ohms same power)

JBL BP series (2;4ohms same power)

Normally lower ohm loads produce less efficiency. I dunno how that applies when talking about the above amps though.

 

[reed dollaz 10+ year member]

Have you never heard of the following?
JL slash series (1.5-4ohms same power)

Phoneix Gold Xenon (1-4ohms same power)

JBL BP series (2;4ohms same power)

Normally lower ohm loads produce less efficiency. I dunno how that applies when talking about the above amps though.

no. never heard of that. nice bit of info tho. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[helotaxi 5,000+ posts]

The PG Xenon amps in particular were MUCH more efficient into a 4 ohm load. All of those amps will be more efficient into the 4 ohm load. Simple Ohm's law stuff. Same power into a lower impedance means higher current on the outputs. Higher current means a higher voltage drop. Higher voltage dropped wih higher current menas more power lost as heat.

 

[velobard 10+ year member]

Technically speaking, you'll have less distortion at 4 ohms than 2 but I'd wager that the average person wouldn't hear the difference.

 

[funkdoktor 10+ year member]

thanks guys.

 

[helotaxi 5,000+ posts]

Technically speaking, you'll have less distortion at 4 ohms than 2 but I'd wager that the average person wouldn't hear the difference.

With a decent amp you'd have a time of it measuring the difference. The distortion should remain well below 1% in all cases.

 

[azbass 5,000+ posts]

Run it at 4ohm.. It will be easier on your electrical system..

hows that..