do amps really see rated power at 1 ohm

[mokedaddy 5,000+ posts]

Unless of course you have extra ohms are able to use those Than any amp anytime will do power at any load under any conditions. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[RAM_Designs 5,000+ posts]

Why would that be ?is just personal choice not to run my amps at 1 ohm for the single fact that my amp does plenty of power 2 ohms.

and i don't need/like dropping my amps that low.

That's not what you originally said...

I actually like to run my 1 ohm stable amps at 2 ohms for the single fact that they don't seem to get as hot when you crank them for long periods of time.I know a guy that has the same set up as me but He already fried 3 amps because aside from being an idiot he runs his at 1 ohm.

His might be a tad louder but his starts clipping within minutes when mine keeps on going.

Here you stated that you don't do it because your amp gets hotter when running at 1ohm. If you're getting the same amount of power out of your amp, the ~5% difference in efficieny isn't going to make a noticable difference on how hot your amp gets. Not to mention, so long as you have a decent amp that IS 1ohm stable, it'll have an easier time producing that power at 1ohm instead of at 2ohms.

The you said that a guy has fried 3 amps, and that one of the reasons was because he runs them at 1ohm(I assume they're 1ohm stable?). Could the problem of been that he doesn't have the electrical upgrades in order to handle the power. How about the fact that he's an idiot, like you stated, and has no idea how to set his gain properly? Simply saying that he blew his amps because he ran them at 1ohm is just false.

Then you went even further and said that his(idiot's) system "starts clipping within minutes." Exactly how does an amp functioning in a perfectly normal way all of the sudden "start clipping after a few minutes?"

It seems to me that you just don't have the electrical upgrades needed to run your amp at 1ohm and get the kind of power you want out of it, because there would be no reason for it to get a lot hotter just because it's putting out the "same power" at 1ohm instead of 2.

I always run my 1ohm amps at .5ohm, since I know after imp rise it'll be seeing around 1ohm...

 

[cdimic25 10+ year member]

Well first of all, after impedience rise your never going to be at 1 ohm. But yes, in a perfect world with perfect climate conditions an amp will give its rated power and sometimes more (sundown,DD, stetsom, rf,....ect) at its needed voltage and ohm load will give out rated power unless of course they are over rated (hifonics,sony, ect...)

So to answer your question, amps will rarely see rated power at 1 ohm because in my eyes its impossible to have an amp receiving a 1 ohm load unless your box has a huge depth, weather is rather cool (current transfers better in the cold), and if you have a extremely efficient amp or a big battery bank that can keep the voltage at its needed level.

 

[chunky cumz 10+ year member]

Unless of course you have extra ohms are able to use those Than any amp anytime will do power at any load under any conditions. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

i sell .25 ohms for 50 bux a piece... interested?

 

[RAM_Designs 5,000+ posts]

see, i always that that there was an increase in distortion when lowering impedance. Am i wrong about that?

Amps are designed to to rated power while staying under a certain distortion percentage, normally 1%. Whether or not the amp is producing just .2% THD while producing RMS power at 4ohm, or .99% while running at 1ohm, you WILL NOT be able to tell in the slightest.

 

[endofdays89 5,000+ posts]

Well first of all, after impedience rise your never going to be at 1 ohm. But yes, in a perfect world with perfect climate conditions an amp will give its rated power and sometimes more (sundown,DD, stetsom, rf,....ect) at its needed voltage and ohm load will give out rated power unless of course they are over rated (hifonics,sony, ect...)
So to answer your question, amps will rarely see rated power at 1 ohm because in my eyes its impossible to have an amp receiving a 1 ohm load unless your box has a huge depth, weather is rather cool (current transfers better in the cold), and if you have a extremely efficient amp or a big battery bank that can keep the voltage at its needed level.

mine sees 1.4 ohms on the dmm. Seems to me like it is maybe only good for about 1200 watts if that is accurate. Should i buy another hifonics amp so i can power each of my type r's at 2 ohms?

 

[chunky cumz 10+ year member]

mine sees 1.4 ohms on the dmm. Seems to me like it is maybe only good for about 1200 watts if that is accurate. Should i buy another hifonics amp so i can power each of my type r's at 2 ohms?

u have a shytty car lol

 

[cdimic25 10+ year member]

I actually like to run my 1 ohm stable amps at 2 ohms for the single fact that they don't seem to get as hot when you crank them for long periods of time.I know a guy that has the same set up as me but He already fried 3 amps because aside from being an idiot he runs his at 1 ohm.

His might be a tad louder but his starts clipping within minutes when mine keeps on going.

//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif

Amps do not start to clip after a couple minutes unless there has been a serious voltage drop or the songs you have are not clean and were downloaded.

 

[cdimic25 10+ year member]

mine sees 1.4 ohms on the dmm. Seems to me like it is maybe only good for about 1200 watts if that is accurate. Should i buy another hifonics amp so i can power each of my type r's at 2 ohms?

I dont really trust the dmm on impedience rise during burps because it changes so drastically. Id clamp them to get an accurate reading.

However I do run DD and they can have a high rise.

Impedience rise depends mostly on your box and driver.

Im sure the 1.4 you are seeing is very possible however.

 

[endofdays89 5,000+ posts]

u have a shytty car lol

how shitty is it? I'm not going to get a loan just to get a 10k car. This one was only $3,400 and is like new. Interior is perfect. Theres not many cars out there nicer for the price. I don't care about speed either, and yes, it is slow.

 

[chunky cumz 10+ year member]

how shitty is it? I'm not going to get a loan just to get a 10k car. This one was only $3,400 and is like new. Interior is perfect. Theres not many cars out there nicer for the price. I don't care about speed either, and yes, it is slow.

lol just gettin a rise outa ya

 

[cdimic25 10+ year member]

I would not recommend getting another hifonics amp because you will find yourself shelling out the big bucks to keep your electrical system up to par.

Look at some more efficient amps like a Sundown 1500D or a AQ 2200. I have no idea what the rms on type r's are however so be causious.

 

[shaneb 10+ year member]

Just because there is more current flow at a lower resistance does not mean you see distortion faster //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

If you are clipping, then your gains are wrong or you have your HU cranked up too high. Or a combination of the sorts.

 

[cdimic25 10+ year member]

Amps are designed to to rated power while staying under a certain distortion percentage, normally 1%. Whether or not the amp is producing just .2% THD while producing RMS power at 4ohm, or .99% while running at 1ohm, you WILL NOT be able to tell in the slightest.

What he said on distortion percentages.

 

[dtbrown 10+ year member]

When you ask "amps" as a whole it's almost impossible to answer because there are to many factors. If you asked about certain brand or model of amp then that narrows it down a lot.

I guess it really depends on the manufacture on how they rate their amps. Going with manufactures that use the CEA rating is good because they follow specific guidelines on rating amplifiers so you know that when they rate the amp it's within those guide lines. Manufactures that don't use CEA rating will typically tell you how they rate their amps. So look for that information from the manufacture. And some companies don't even share how they rate their amps so you have to take their rating for what it is.

But typically if an amps is rated at 1 ohms it should do within + or - 20% rated power with distortion less than 1%. Agreed that if you run a 1 ohm amp at a higher impedance distortion may be less. But less to a point that may not be noticeable to the ear. At least with a subwoofer amp.

So to a point, yes running your amp at higher impedance may net you in less distortion. But downfall is you'll receive less power and the distortion difference may not even be noticeable. Most good amps that are rated at 1ohms should deliver most if not all rated power at or below rated distortion. But to know of sure you'll have to do some research on how the manufacture test/ rates their amps.