Better to go with 1 or 2 ohm amp?
 

I am gonna be getting a duel 1 ohm per coil sub should I get a 1 or 2 ohms. I am gonna be running the sub at .5 ohms but with imp rise if I went with 2 ohms I would get the most out of the amp if my ohms get high from the imp rise. This is for competing a single sub setup. I wan told by one pro to go with the 2 ohms because after imp rise it may become almost 3 ohms higher anyways without knowing. I just wanted a few other peoples advice.

depends on the amp 100%

Going with the soundigital sd5000d.1 if that helps. Offered both in 2 and 1 ohm.

In that case, I don't think it really matters... both versions are optimized for their respective loads.

Just read the .5 part.... with SD you might want the 1 ohm version.

Yeah 1 ohm would probably be the best choice. Although, if you have measured your rise already then maybe the 2 ohm would be better, but your rise might not be that high so for safety sake I'd do 1 ohm. Give Murilo a shout and see what he has to say.

Oh, and excellent choice btw lol

1 ohm in that case

No I do not know exactly what my imp rise is. Wish I did would help out a lot. But it's only for burps. But I rather not blow up my amp lol. Tough choices

I was thinking 1 ohm as well and since 3 people also said that that's 4 to 1 lol so I think I will go with 1 ohm.

u can not know your impedence rise and apply it to everything.

rise will change with power applied

SD amps dont like to be wired below rated load. ID advise against it. IF your going .5ohms GL, some have done ok at .7 but dont do .5

Ether wire your sub at 2 ohms and get the 2 ohm version or get 2 2500 or 2000s and run one per coil at 1 ohm if their one ohm stable

I thought you could do some tests with a multi meter and then a few equations and it tells you your imp rise for that setup? But I do realize it changes with everything you change in your car

Well I can always go duel 2 ohm and wire it down to 1 ohm. I was reading on caco about lower ohms. Something about 1-2 batteries can do a .5 ohm burp. Regular playing at 1 ohm and 16volts is like 0.7 ohms? I really don't understand it all. But running at .5 ohms probably won't be .5 ohms anyways that's what impedance rise is. Google it and you will understand Manethon

im going by what i was told by the man himself, and other people that ran the SD amps. THey produce the power and dont have to be dropped low to make it.

I know what impedance rise is. Its not a safe method to use to calculate.
Sd amps if im not mistaken have a higher voltage : amp output ratio , and when your wire them to low, they product a higher current to volt ratio and u cook em. So if you had the volt and amp spec of the limit then sure do what u need to do to match it up to that but i say

Dont drop below 1. might get away safely with .7

So duel 2 ohm is the better bet then? Cause th sub hasn't been ordered I am just trying to settle the amp right now so I can always change my mind on the sub.

Oh and caco murilo explained about the higher output and everything it's just hard to understand what he exactly ment as I am just new to the game still lol

id say if you have not ordered the sub yet then go with 1 ohm version. Also remember many sub companies have "d2 coils" which actually read d1.4

go with one ohm version and slap d2 coils in there and you should be good if their d2.

Even better yet, just email him and he will tell you what to get

i believe say , Volt: amp ratio on output.

say 10:2 is max output , if you drop load to low it goes 8:4 and you cook it

D2 coil which is what? And ya I seen a few subs with 1.4 ohm. I was thinking of going with audioque or dc subs.

Go with the 1 ohm version for Spl and 2 ohm version if it's for bass race or daily beating. One ohm version will produce higher current for more motor strength and control, great for burps but creates more heat than the 2 ohm version.

Thanks Lessy.

And Yuli, Fresh1 and everyone else I will take everyones advice and go with the 1 ohm.

Thanks for the help. thats why I love this site

lol i have a name 2! jk

But on a serious note, even contact DBdon, and even ask corey, they all have worked and seen many builds with the SD's DONt run at .5! im telling you.

i.e Jordy doesnt run his sd at that
nor does the twins,
nor did corey,
nor do I

just not a safe bet dude.

1ohm version--> so get d2 coils :)

Lol sorry I just knew thier names from many other threads they have helped me on so it was easy to remember their names.

But I will indeed look into running 1 ohm. I am pretty much convinced running 1 ohm already lol. Dont worry in a few weeks once I have money money I will probably be making a thread having trouble picking a sub. And I will put into consderiation your offers and advice you have given me.
:thumbsup:

Not a problem man. You have all information about what i said and what i can help with so yeah. The options etc

I have the 2ohm 5k model and run it at 1ohm without problems. I rise to 3.8.

There's a competitor in the states that has the 1ohm model and wasn't able to run it at 1/2ohm. He had to recone to .7, but his headunit seems to really work poorly, which could be the cause.

Thats odd the amp wouldnt run at 1/2 ohms? Would the head unit possible have something to do with that?

you should probably be investing in a Termlab rather than these huge amps

By the looks of this thread you will be breaking a lot of equipment......maybe you should start with something smaller and learn. This is like buying an ak47 to learn how to shoot

If you want compete a termlab will be your best investment

i just bought a term lab.

trying to get it to work as we speak. i bought a used one but i dont think it works. it wont pick anything up i downloaded the upgraded software and everything but it wont pick anything up when i press start?

Nvm figured it out. Just had to put the min down a bit to make sure the sensor was indeed working.

Dont worry Jesse I maybe new but I am gonna be getting help from a few people i nperson to help me set all this up. I wont underpower my amp or anything like that.

send me the upgraded termlab patch

https://download.yousendit.com/WTNJb24wdVU5RlpjR0E9PQ

but you need a serial number

Dude get the dual 1 ohm subs, and the 2ohm amp.......Based on experience the majority of efficient "SPL" enclosures will have a rise of aprox 3x, therefore it will allow you to burp at 1.5ohm reactive impedance, which is no problem for a SD amp. Then you can wire your sub at 2ohms into the amp for daily use and be completely comfortable.

Hey Luis you on msn?

Again before you decide, ask murilo. Email or call him.
Bottom line is if you blow it up, he's te warranty.

That's how we learned to shoot in the ghetto. bddddddddddddddaaaaaattttttt

Just so we're clear here. Impedance rise decreases with more power. So low power, high rise. As power increases, rise lowers.

High efficiency boxes will have alot more rise than 3x ;)

too advanced for all but like 4 people on this site....

bottom line is he shouldnt be making the judgement based on that unless your a vet, and even still you gotta talk to the person ur buying the amp from.