Benefits of a one-ohm connection

Home / the12volt's Install Bay / Car Audio / Benefits of a one-ohm connection (

Topic Closed)

Welcome Guest :)

Members

Next Page > < Prev Topic Next Topic >

n.sputnik

Member - Posts: 8

Joined: April 19, 2004

Location: United States

Posted: February 19, 2005 at 3:19 PM / IP Logged

Would someone please explaine to me the benefits of a one-ohm connection/capeble amp?

The only reason I can see would be so that you could connect more speakers to a single amp. The volume you would get from one speaker would be no different that what your would get from three speakers connected in parallel to a single amp. At one ohm, the amp has to work harder to power all three speakers, and the sound quality is not as good. Is this correct?

it seems to me that if you want the highest possible SPL, you should have only one speaker connected to one amp, but have multiple sets of these (such as 3 amps and three speakers).

kfr01

Gold - Posts: 2,121

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

Joined: April 30, 2003

Posted: February 19, 2005 at 3:40 PM / IP Logged

I hear high school girls these days like guys that run their amps into the ground. And capacitors. And chrome flames. woo hoo.

1-ohm will allow competitors to push much more power to the subwoofer than 4-ohm based wattage class.

I feel there's little need to run 1-ohm in daily drivers and sq vehicles.

New Project: 2003 Pathfinder

n.sputnik

Member - Posts: 8

Joined: April 19, 2004

Location: United States

Posted: February 19, 2005 at 4:23 PM / IP Logged

So it is for a competition, to see who can push their amp close enough the the brink of causing to to blow or go into a protection mode without doing so?

kfr01

Gold - Posts: 2,121

Joined: April 30, 2003

Posted: February 19, 2005 at 5:03 PM / IP Logged

Competition is sometimes broken up into wattage groups. 1-300, 300-600, 600+. A competitor's wattage is usually the sum of each amplifier channel's rms rated power at 4ohms.

So, if a competitor can keep his total 4-ohm wattage under, say 300w - but really be pulling 1,000w at 1-ohm he has a huge advantage over others in his class.

If the amplifier is truely 1-ohm stable this won't be a problem.

But again, I don't really see much of a point for daily drivers.

New Project: 2003 Pathfinder

Poormanq45

Silver - Posts: 597

Joined: October 27, 2004

Location: United States

Posted: February 19, 2005 at 5:15 PM / IP Logged

Well, if you like distortion in the ~10~25% range, then I guess that would be a benefit of running at 1 Ohm.

I have also read somewhere that a 1 or 2 Ohm voice coil is actually more efficient then a 4 or 8 Ohm VC.

Anyway, just to throw a curve ball into this thread. Note that Bose amplifiers are capable of 1/2 Ohm. I know that Bose isn't considered good compared to aftermarket stuff, but they do make some pretty good OEM systems.

pimpincavy

Silver - Posts: 880

Joined: May 20, 2004

Location: United States

Posted: February 20, 2005 at 3:00 PM / IP Logged

I have my subs wired to 1-ohm, it was the easiest way to wire them. 1-ohm just offers more wiring options.

mikew04

Copper - Posts: 52

Joined: March 16, 2004

Location: United States

Posted: February 20, 2005 at 3:15 PM / IP Logged

Would running at 1 ohm really hurt the SQ? specifically a dvc brahma running off of a JBL 600.1 at one ohm.

kfr01

Gold - Posts: 2,121

Joined: April 30, 2003

Posted: February 20, 2005 at 3:19 PM / IP Logged

It will have higher levels of distortion than at 4-ohms.

To my knowledge the JBL 600.1 is not rated 1 ohm stable; you could be shortening its usable life.

New Project: 2003 Pathfinder

DYohn

Moderator - Posts: 10,741

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.

Joined: April 22, 2003

Location: Arizona, United States

Posted: February 20, 2005 at 3:26 PM / IP Logged

There is no benefit to running a system at one-ohm other than making loud noise. SQ is degraded by a factor of about 10 (and on some amps by about 100) when dropping an amplifier's loading from 4 ohms to 1 ohm. JBL's BP series is not rated at 1-ohm, although they will handle it as long as they are set up correctly.

If you are interested in SQ, I say never run with impedence less than 4 ohms on any amplifier. I run my sub and my mid-bass at 8 ohms for this very reason.

Support the12volt.com

mikew04

Copper - Posts: 52

Joined: March 16, 2004

Location: United States

Posted: February 20, 2005 at 4:09 PM / IP Logged

The one i have says its 1 ohm stable in the manual, but says there is no power increase compared to 2 ohms. How would i wire it at 2 ohms if it has 2ohm dvc's?

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.