how to get to a 1 ohm load

Home / the12volt's Install Bay / Car Audio / how to get to a 1 ohm load (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

oldskool23

Member - Posts: 2

Joined: May 28, 2008

Location: Alabama, United States

Posted: May 28, 2008 at 7:38 PM / IP Logged

how do i get to a 1 ohm load by using 4 12 inch 4 ohm dvc

the12volt

Administrator - Posts: 3,955

This member has made a donation to the12volt.com. Click here for more info.

This member has been recognized as an authority in Electrical Theory. Click here for more info.

This member has been recognized as an authority in Mobile Audio and Video. Click here for more info.

This member has been recognized as an authority in Mobile Security and Convenience. Click here for more info.

Joined: March 07, 2002

Location: Louisiana, United States

Posted: May 28, 2008 at 7:42 PM / IP Logged

You can't get a 1 ohm load using eight 4 ohm coils... https://www.the12volt.com/caraudio/woofer_configurations.asp?Q=4&I=42

how to get to a 1 ohm load -- posted image.

the12volt • Support the12volt.com

joch1314

Copper - Posts: 301

Joined: March 25, 2008

Location: Texas, United States

Posted: May 28, 2008 at 7:53 PM / IP Logged

can't!! you can get it as low as .5 ohms, and 2 ohms....but you can't get it too 1 ohm!

...half of the truth can be worse than a lie. <----Roger Russell said that..

haemphyst

Platinum - Posts: 5,054

Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: May 29, 2008 at 8:46 AM / IP Logged

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.

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."

KarTuneMan

Platinum - Posts: 7,056

This member consistently provides reliable information

Joined: December 14, 2004

Location: Isle Of Man

Posted: May 29, 2008 at 9:20 AM / IP Logged

The spiz has spoken...

my ohmmeter is too short, and has a rash on it!

DYohn

Moderator - Posts: 10,741

Joined: April 22, 2003

Location: Arizona, United States

Posted: May 29, 2008 at 9:54 AM / IP Logged

Question: how do i get to a 1 ohm load?

Answer: purchase the correct speakers.

Support the12volt.com

KPierson

Platinum - Posts: 3,527

Joined: April 14, 2005

Location: Ohio, United States

Posted: May 29, 2008 at 10:06 AM / IP Logged

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

forbidden

Platinum - Posts: 5,352

Joined: November 01, 2003

Location: Alberta, Canada

Posted: May 29, 2008 at 4:05 PM / IP Logged

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.

Top Secret, I can tell you but then my wife will kill me.

haemphyst

Platinum - Posts: 5,054

Joined: January 19, 2003

Location: Michigan, Bouvet Island

Posted: May 29, 2008 at 4:55 PM / IP Logged

That is a perfectly viable option, but total power handling will be about 80% of the total rated RMS, not 50%...

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."

stevdart

Platinum - Posts: 5,816

Joined: January 24, 2004

Location: Pennsylvania, United States

Posted: May 29, 2008 at 5:19 PM / IP Logged

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.

Next Page >

Printable version

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

Search the12volt.com

Follow the12volt.com

Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.