how to get to a 1 ohm load
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=105084
Printed Date: May 15, 2024 at 8:52 PM
Topic: how to get to a 1 ohm load
Posted By: oldskool23
Subject: how to get to a 1 ohm load
Date Posted: May 28, 2008 at 7:38 PM
how do i get to a 1 ohm load by using 4 12 inch 4 ohm dvc
Replies:
Posted By: the12volt
Date Posted: May 28, 2008 at 7:42 PM
Posted By: joch1314
Date Posted: May 28, 2008 at 7:53 PM
can't!! you can get it as low as .5 ohms, and 2 ohms....but you can't get it too 1 ohm!
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...half of the truth can be worse than a lie. <----Roger Russell said that..
Posted By: haemphyst
Date Posted: May 29, 2008 at 8:46 AM
Why do you WANT one ohm? Are you under the mistaken impression that doubling your power (which it doesn't) by halving your impedance REALLY gets you something? Well it DOES get you something: Heat, inefficiency, higher distortion, shorter amplifier life.
What it DOESN'T get you is a noticeable increase in output. That amounts to less than 3dB, which, as I tell everybody, in a daily driver, this will be an insignificant (as in inaudible) gain. Are you building an SPL competition car? (Notice how I stressed COMPETITION. I do mean TRUE competition.) If so, then you simply chose the wrong woofers, and you should have somebody that knows what they are doing build your system.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: KarTuneMan
Date Posted: May 29, 2008 at 9:20 AM
The spiz has spoken... my ohmmeter is too short, and has a rash on it! -------------
Posted By: DYohn
Date Posted: May 29, 2008 at 9:54 AM
Question: how do i get to a 1 ohm load? Answer: purchase the correct speakers. ------------- Support the12volt.com
Posted By: KPierson
Date Posted: May 29, 2008 at 10:06 AM
Build the box half the size you think you need it to be. Mount all 4 subs, but only hook two of them up. :) ------------- Kevin Pierson
Posted By: forbidden
Date Posted: May 29, 2008 at 4:05 PM
Use only one voicecoil on each speaker and wire them in parallel. Be aware that your overall power handling will be 50% of what it should be as one entire set of coils are not being used.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: haemphyst
Date Posted: May 29, 2008 at 4:55 PM
That is a perfectly viable option, but total power handling will be about 80% of the total rated RMS, not 50%...
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: stevdart
Date Posted: May 29, 2008 at 5:19 PM
The total available RMS from the amplifier at 1 ohm is not likely to be twice what it is at 2 ohms. Unless it's a super amp, it's a wash...and the amp is running hot at 1 ohms to get there. And if it IS a super amp, OP would be using the correct subs to achieve the target impedance, right? There are options, and then there are practical options. This one falls into the first category, which suggests why using one coil on each sub was not previously advised. ------------- 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: oldskool23
Date Posted: June 03, 2008 at 8:53 PM
can you get to a 2 ohm load with 8 4 ohm dvcs
Posted By: stevdart
Date Posted: June 03, 2008 at 9:34 PM
Nope. You get 1 or 4.
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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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