ohm’s
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=33564
Printed Date: May 10, 2025 at 8:32 PM
Topic: ohm’s
Posted By: northballer
Subject: ohm’s
Date Posted: June 09, 2004 at 12:45 PM
What is the best 1OHM, 2OHM, 4OHM I see this but really dont understand it. How do you get a SUB to perform at diffrent OHM'S and how do you get AMPS to perform at deffrent OHM'S is it all in the wiring someone please explain. Thanks.
Replies:
Posted By: DYohn
Date Posted: June 09, 2004 at 12:54 PM
It is all in the wiring. Ohms are electrical resistance. Purchase you amp and then purchase a sub (or subs) with the proper resistance to match the amp. Go here and read through some of the tutorials if you really want to learn. ------------- Support the12volt.com
Posted By: forbidden
Date Posted: June 09, 2004 at 1:21 PM
And then ask lots of questions, no matter how stupid they may sound (try the search function first though.)
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Posted By: northballer
Date Posted: June 09, 2004 at 1:31 PM
That does explain alot Thanks But I have a couple of questions and maybe I missed it from the site but is lower ohms better and can an amp with low ohm specs like a 2 OHM anp handle a higher amount of ohms Like 8 OHM but a higher rated amp like 4 OHM cant handle a lower amount I think I have a pretty good Idea though from the wiring they show THANKS
Posted By: DYohn
Date Posted: June 09, 2004 at 1:44 PM
Amplifier ratings specify wattage into MINiMUM load. Any load higher than the ratings is safe, it's just that the effective power output decreases. Indeed, audio amplifiers operate better at higher ohm loads as they do not have to work as hard. The lower the ohms in the speaker load the higher the current flow out of the amplifier. The higher the current flow, the hotter the amp gets and the more noise and distortion it produces. At too low an ohm load, the amplifier cannot sustain the current and it either shuts down, blows a fuse or it produces max smoke. ------------- Support the12volt.com
Posted By: Ketel22
Date Posted: June 09, 2004 at 1:45 PM
amps can always handle higher impedences (a 2ohm rated amp can handle a 3, 4, 8...ohm loads) a amp rated at 4ohms may or may not be able to handle 2ohms.
usually you run at higher impedences when you want more of a sound quality setup because when you push your amps to the max at 2 or 1ohm then the s/n ratio becomes worse and worse....
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Posted By: northballer
Date Posted: June 09, 2004 at 1:48 PM
This explains alot I have had 2 amps that started smoking and I thought they just went bad. If they smoke does it mean they are ruined.
Posted By: DYohn
Date Posted: June 09, 2004 at 1:54 PM
Smoke = bad and usually = ruined. In all cases, if an amp smokes, it will probably no longer operate at it original specs if it still operates at all. ------------- Support the12volt.com
Posted By: northballer
Date Posted: June 09, 2004 at 1:58 PM
Thanks for all the help.
Posted By: JungleBadger
Date Posted: July 17, 2004 at 5:49 AM
So if your amp says it will run at 2ohm and 4 ohm it all depends on how I wire the speakers to get it to perform at the differrent ohm level? so say I'mm looking at specs like 4 Channels 60 x 4 RMS @ 4-ohms 120 x 4 RMS @ 2-ohms 240 x 2 RMS @ 4-ohm Briged I would have to wire two 4ohm speaks in parallel in order to achieve 2ohm amp output? Sorry been reading about this and the books kind of leave that part unanswered. ------------- Boooooooom Chack Boooom Booooooom Chack
Posted By: stevdart
Date Posted: July 17, 2004 at 8:35 AM
Use a plain test editor like notepad to avoid the garble, or type directly in the reply box. https://www.sounddomain.com/shop/wooferwizard.pl will show different loads depending on the wiring of the speakers. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: JungleBadger
Date Posted: July 17, 2004 at 4:23 PM
stevdart wrote:
Use a plain test editor like notepad to avoid the garble, or type directly in the reply box. https://www.sounddomain.com/shop/wooferwizard.pl will show different loads depending on the wiring of the speakers.
Sorry, the garble was from pasting the ratings of an amp from site. I didn't realise it messed up my post till it was too late. My apologies. So what you're saying is I was correct in my thinking, it is all in the wiring? All these links don't go directly to an answer it was a very simple question which can be answered with yes or no. ------------- Boooooooom Chack Boooom Booooooom Chack
Posted By: stevdart
Date Posted: July 17, 2004 at 4:54 PM
JungleBadger wrote:
All these links don't go directly to an answer it was a very simple question which can be answered with yes or no.
Yes, then, to whatever the hell you asked. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
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