Is running .5 ohms a bad idea? - Realm of Excursion



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Old 07-16-2008   #1 (permalink)
 
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Default Is running .5 ohms a bad idea?

After some reading about people being skeptical about running amps lower than 1 ohm... I had to ask if it's a bad idea to run .5 ohms? I'll give you my situation I guess.

I'm about to have a Hifonics Brutus BXi2608D, and a 15" Fi BTL set for dual 1 ohm. If I Wire this combo to .5 ohms, would it burn up my amp? Also, if I do run it at .5 ohms (like only my stubborn self would), how could I do it the safest way possible?
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Old 07-16-2008   #2 (permalink)
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It really depends on the amp and electrical? What does your electrical consist of?
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Old 07-16-2008   #3 (permalink)
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run that bxi at .5 and watch it go up in flames. The bxi line is pretty unforgiving at under 1ohm and sometimes even at 1ohm. Lets just say i have seen quite a few catch fire or smoke Id say keep it at 1ohm till you can upgrade your amp to something with more Power and stability
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Old 07-16-2008   #4 (permalink)
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unless u pick up another sub, u can do .5
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Old 07-16-2008   #5 (permalink)
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Quote:
Originally Posted by caps View Post
unless u pick up another sub, u can do .5
^^ as said you can either Wire to 2ohms or .5ohms with a dual 1ohm sub
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Old 07-16-2008   #6 (permalink)
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as said, it depends a lot on the amp, and then if your electrical can keep it the voltage up. im running a decent lanzar amp right now, the one in my sig at .5 ohms. it gets warm, but its taking it no problem.
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Old 07-16-2008   #7 (permalink)
 
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Maybe I should get in touch with Fi and see what I can do about getting a dual 2 ohm BTL instead, then I could run 1-ohm. But for now it seems like I'll have to run 2 ohm.

Damn this blows, but thanks for the heads up. I'm glad I asked before I did something stupid.
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Old 07-16-2008   #8 (permalink)
 
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brutus amps WILL NOT run under 1 ohm. do not do it, they are famous for literally burning up within 5 minutes of you trying it. Some amps are capable of it, that isnt one. Just please dont do it with that amp.
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Old 07-16-2008   #9 (permalink)
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brutus amps WILL run under a 1ohm load.. depends on the electric as stated, the way you put it above, is saying like, no matter what, it wont at all.... buddy of mine had a 1606 at .5 ohms for a couple months daily.... got warm but did fine.. its a toss up.. up to you in the end... i personally probably wouldnt do it since that amp isnt known to be a .5 stable amp
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Old 07-16-2008   #10 (permalink)
 
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Quote:
Originally Posted by Scarrell View Post
brutus amps WILL run under a 1ohm load.. depends on the electric as stated, the way you put it above, is saying like, no matter what, it wont at all.... buddy of mine had a 1606 at .5 ohms for a couple months daily.... got warm but did fine.. its a toss up.. up to you in the end... i personally probably wouldnt do it since that amp isnt known to be a .5 stable amp
True True. I got a buddy with 1606d running at .7 ohms for couple months also and its doing just fine. Just posted a vid of it in perfect working condition still pushin 3 15s.
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Old 07-17-2008   #11 (permalink)
 
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Quote:
Originally Posted by 420cannabis024 View Post
plus sometimes amps can be like picking sticks out of a cup
Also true so really it just one of those things that really up to you. Chance it or play it safe....
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Old 07-17-2008   #12 (permalink)
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until u measure it youself, dont believe ur friends
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Old 07-17-2008   #13 (permalink)
 
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i'm sure it may be possible but the three people i've seen try to get their brutus below one ohm failed, and they failed quickly. all three sounded like dirt for 5 minutes and then protection came on and never went away. Amp was dunzo. so all i'm saying is, if you're trying to run amps under their rated ohm load, do it with ones with unregulated power supply and have good electrical to back it up. just please dont ruin your amp, dont try it on the brutus.
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Old 07-17-2008   #14 (permalink)
 
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Yeah, it's cool guys. I'm just going to do 2ohms and get a recone from Fi so the BTL will be dual 2 ohm, so I can run it at 1 ohm.

Appreciate the input, seems like a good debate. But in the end, I'm the type to play it safe with over $1200 out my pocket as a daily driver; I don't wanna **** anything up. Plus I've got college expenses coming up, and don't think I can afford getting an entire new amp anytime soon.
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Old 07-17-2008   #15 (permalink)
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Run it at 2 ohms. Later upgrade your electrical and get a second brutus :P That shou'd be plenty of power fer yer beasty. Keep in mind that although the 2 amps would b capable of 5kW, you wouldn't necessarily be sending that amount to the BTL(I wouldn't do it). But a little headroom never hurt haha. Or get a recone haha...thats probably a better idea.



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Old 07-17-2008   #16 (permalink)
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Id run it at 2 ohms as well. But honestly, no one here even once mentioned impedance rise. Wiring it to .5 doesnt mean the amp will always see .5.... it will probably end up being close to 1 ohm anyways.

I dont know about Fi's but DD's usually have a good bit of imp. rise. You see a lot of guys at soundpressure wiring down to .25 and seeing around .7 or .8, and when they wire it to .5 they usually see around 1.3. But for daily, just wire it to 2 ohms to be safe.
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