Need help matching subs with an amp

[ryan s]

new post because this info is so good

http://www.diymobileaudio.com/forum/diy-mobile-audio/50872-can-i-clip-my-amp-even-if-set-dmm.html

dont listen to tspence...he's an idiot. especially read npdang's post.

eggy i know youre on diyma...you HAVE to know that members like foxpro5, erin (bikinpunk), chad (chad), kenny (i think is his name...azngotskills), and colin (wrx/z28) aren't going to blow smoke up your ***...

 

[eggyhustles]

I don't want him to get happy with the volume knob and kill the subs 20 minutes after he hooked everything up lol

why is there no point in running under 2 ohms? what's the point in buying a 1200 watt amp to use half of the power? for that he should just purchase an amp that does 600@ 2 and call it a day.

LOL@tspence73 being an idiot...i agree even though he helped me out with planning a 3 way setup. i've always had luck setting the gains with a dmm. don't trust myself yet doing it by ear.

 

[sleeper4bngr]

ill prolly go with some sort of mutli meter. They're like 10 bucks and being a noob, the last thing I want is to just mess around and **** something up lol.

 

[ryan s]

I don't want him to get happy with the volume knob and kill the subs 20 minutes after he hooked everything up lol

why is there no point in running under 2 ohms? what's the point in buying a 1200 watt amp to use half of the power? for that he should just purchase an amp that does 600@ 2 and call it a day.

LOL@tspence73 being an idiot...i agree even though he helped me out with planning a 3 way setup. i've always had luck setting the gains with a dmm. don't trust myself yet doing it by ear.

hence the importance of tuning using the volume knob to set gains...i can "crank" it up to 40 and not be afraid of losing anything. i can (and do with no hesitation) turn up my sub via the epicenter and make it loud...very loud...

less resistance = lost energy. youre making more power, yeah, with extra heat. heat is the enemy of electronics. if 2 ohms is better than 4, then why arent more people running 1/2 or 1/4 ohm configs? think about that...google it...

you took advice from tspence?

i've "retuned" my stereo probably 4 times in the past 30 days, and am going to do it again soon. never, ever used a dmm. ive never, ever lost an amp or driver (besides a stock 6.5" running off the headunit...but...come on...). ive been in this hobby since i was 17, installed in a few cars, and haven't managed to **** anything up beyond repair.

ill prolly go with some sort of mutli meter. They're like 10 bucks and being a noob, the last thing I want is to just mess around and **** something up lol.

educating yourself is better than a piece of electronics. then take that education, and use it as a base for that piece of electronics.

just having it doesn't mean it'll solve all your problems.

 

[eggyhustles]

Not sure if you know this, but those sundown amps can run @ .5 ohms daily with no issues. 1 ohm is no sweat for the amp. yeah 2 ohms is better but for that he can save coin buying an amp that does 600-700@ 2 instead of buying a .5 stable amp and not use it to it's fullest potential.

 

[ryan s]

i dont know because i dont stress over trivial stuff like bragging rights. because that's what low impedance is...bragging rights.

the only advantage is more power and a bit more efficiency at lower volumes.

and i didnt say he should buy a .5 ohm stable amp. my question was: if low impedances are so awesome, why is everyone NOT using .5 ohms? or .25 ohms? (that's not including the OEM systems in some newer cars...those are freak shows )

 

[xx24xx]

no point in running under 2 ohms. thats straight from zed audio.

again...no point. with that much power on tap, he probably wont have to turn the gain up much, if at all. i have one rca providing signal from a 2v headunit, branching off an external XO, into a signal processor, then into the sub amp. the gain knob is not a volume knob, but it gets obnoxiously loud at anything over about 1/5 of the way up (400w on a 350w sub, sealed).

i believe that's also straight from zed...but their site is fuxored and i cant find the pdf i want. i know that jl says to set by dmm...but i trust steve mantz a LOT more than pretty much any amp maker short of robert zeff (arc) and the like.

While you point out a very valid statement you are missing the value it passes. You simply don't want to run anything under 2 ohms if you want sound quality.

While 2 and 4 ohms can be much more efficient and clean, they also don't push as much power... theoretically due to resistance. Each amp has it's owm amp/power curve so it would be unfare to say 1ohm amps are stronger than 2/4 ohm amplifiers. Price is also a big factor. For example a clean 1ohm 1600w RMS amp built in Korea costs about $700. A handbuilt amp built in USA like ZED (I think) or Arc (for sure 100% hand made in USA) will cost you double to triple that.

It takes A LOT to audibly hear the difference between these amps. Normally at higher volumes you will notice the most.

I suggest a head unit with at least 4V pre-outs for 1KW rms+ BTW.

 

[eggyhustles]

i dont know because i dont stress over trivial stuff like bragging rights. because that's what low impedance is...bragging rights.

the only advantage is more power and a bit more efficiency at lower volumes.

and i didnt say he should buy a .5 ohm stable amp. my question was: if low impedances are so awesome, why is everyone NOT using .5 ohms? or .25 ohms? (that's not including the OEM systems in some newer cars...those are freak shows )

sq and electrical

 

[sleeper4bngr]

I only have those ****ty subs that handle barely any power lol. So for now I'm gonna be running at 2 ohm most likely depending on which amp I decide to go with (I have a couple finalists lol). But later on Im deff gonna upgrade the subs and we'll see then where I want to go with the whole thing.

 

[eggyhustles]

Go with the sundown dude..or even the audioque 1200d