1 ohm amps
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=30700
Printed Date: May 19, 2024 at 7:12 AM
Topic: 1 ohm amps
Posted By: dudek38
Subject: 1 ohm amps
Date Posted: April 19, 2004 at 8:39 PM
is a 1 ohm stable amp always going to advertise it?
can some amps that give specs at 2ohms really be stable at 1 ohm? please help
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owner of
Motion Marine & Car Audio
the florida keys
Replies:
Posted By: customsuburb
Date Posted: April 19, 2004 at 8:47 PM
If its a descent amp then if it lists it is 1 ohm stable then it should handle a 1 ohm load. Subs (or any speakers) dont stay at just one impedance, it depends on the material being played and the speaker. I have a read review of home speakers that were rated at 6 ohms and they stayed at 1 ohm for most of the review. Some quality amps dont mind a 1 ohm impedance load if not pushed too hard... but i wouldnt push it.
Posted By: speedwayaudio1
Date Posted: April 19, 2004 at 11:54 PM
No amps that I know of. It's a selling point that the the audio company will want to tell the world. Older Orion cheater amps were 1ohm stable,but didn't say it. that's all I can think of
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Big Dave
Posted By: sonicsound
Date Posted: April 19, 2004 at 11:59 PM
Or if an amp advertises that its 2 ohm stereo, that will mean its 1 ohm capable. But not many amps do that. Remember that most of the amps now a days that advertise 1 ohm stable can handle it pretty well and you can push em pretty hard. That is, like customsuburb said, if it is a quality amp.
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Sonic
Pioneer AVH-P4000DVD
Zapco 360.4
Zapco 500.1
Zapco SP-4SL Processor
Two JL 10 W3v3d2
Alumapro 15 Farad Cap
Posted By: defective
Date Posted: April 20, 2004 at 7:49 AM
the Kaption amps advertise their RMS @ 2ohm.... but they are perfectly stable down to .5 ohm
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Posted By: alex75
Date Posted: April 20, 2004 at 10:05 AM
Can anyone reccomend a 1 ohm mono amp to push a single Alpine R 12? I don't want to break the bank, but want something decent.
Posted By: DYohn
Date Posted: April 20, 2004 at 10:24 AM
Many mono amps are actually stable at 1 ohm, but don't advertise the fact because they don't meet their advertised ratings at 1-ohm. As the load impedence drops, noise, humm, IMD, THD etc. all rise dramaticaly and the S/N ratio drops. So even though the amp may be stable at 1-ohm the performance goes to hell. On the other hand, some amp makerss (like Boss) who don't care about clean performance wil;l advertise their amps can remain stable all the way down to 0.5 ohms. They don't tell you anything about their performance there, though. ------------- Support the12volt.com
Posted By: kickerstang
Date Posted: April 20, 2004 at 10:40 AM
hey sonicsound, i'm pretty sure that when most class AB amps are 2 ohm stereo stable they are only 4 ohm mono stable, i don't think any are actually 1 ohm stable. i could be wrong though. but when i've seen an amp advertise that its 2 ohm stable its only in stereo and mono is always 4 ohm.
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what!?!?! you want some??
Posted By: crudeau
Date Posted: April 21, 2004 at 8:25 AM
I had a JBL BP1200.1 that ran 1.5 ohms very solidly. I bet it could of done the extra .5 ohms. I believe it even says in the manaul that it does one ohm, but it doesn't list it on the box. Says 2 ohm stable, in the manual it says "no power gains for 1 ohm"
Posted By: forbidden
Date Posted: April 21, 2004 at 10:59 AM
Wow, I'm susrprised that only one other person caught that, way to go Kickerstang. 2 ohm stereo = 4 ohm mono Alex75, what is the voice coil rating of your sub, if it is a dual 4 ohm arrangement, then 2 ohm mono is all that you will get unless you buy another identical sub. ------------- Top Secret, I can tell you but then my wife will kill me.
Posted By: kfr01
Date Posted: April 21, 2004 at 1:05 PM
Anyone remember when Crunch used to advertise 1-ohm stable amps? :-) kfr
Posted By: zerocuwl
Date Posted: April 21, 2004 at 1:23 PM
I have two bd 1500 by rockford and had the resistors removed which allows me to bridge down to 1 ohm even though they are 2 ohm stable.
Posted By: alex75
Date Posted: April 21, 2004 at 3:53 PM
Forbidden-I bought the 2 ohm Type R. For now it will be hooked up 4 ohm bridged to my crappy Lanzar 600w amp. Very soon-I will be getting a good amp, either Alpine, Pheonix Gold, or Kicker. I want something that will deliver what it advertises in either 4 ohm bridge or 1 ohm mono modes. Any suggestions??
Posted By: flatulatta
Date Posted: April 21, 2004 at 7:49 PM
umm ihave a jbl600.1 that pushes hard at 1 ohm ran it ther efor a good 4-5 mnth didnt even get hot
Posted By: alex75
Date Posted: April 21, 2004 at 10:03 PM
Does anyone online sell JBL? No retailers in my area seem to carry them. Any opinions on the new kicker amps, in particular the kx450.2 or 550.2?
Posted By: customsuburb
Date Posted: April 21, 2004 at 10:19 PM
alex75 wrote:
Does anyone online sell JBL? No retailers in my area seem to carry them. Any opinions on the new kicker amps, in particular the kx450.2 or 550.2?
You can find the JBL 600.1 on sound domain.com for a pretty good price.
Posted By: Beerman354
Date Posted: April 21, 2004 at 10:20 PM
Try https://www.electronic4me.com ... It seems to be the cheapest.. I just bought one and am still waiting for a jbl bp1200.1 to come in. This sitee also carrys it https://www.sounddomain.com
Posted By: crudeau
Date Posted: April 22, 2004 at 7:57 AM
I got mine from www.purecaraudio.com My jbl was 2 JL 12w6v2's both were wired to 2 ohms each, and being the 1200.1 is mono, they were firing at 1 ohm. I never had any issues with the thing getting even remotely warm or clipping. On the other hand when I sold the w6's and got my one 12w7, the amp sucks. It doesn't like the 3 ohm load at all. THe boom box in my room was louder. Now I have the JL 1000/1 and am waiting for the weekend to put it in 
Posted By: soundstream
Date Posted: April 22, 2004 at 8:57 AM
i have a Soundstream Rubicon ClassA 5.2....stable down to 1/4 ohm! if you want a good 1 ohm stable amp, get ready to open your wallet...most high end amps are 1 ohm stable however
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