8 ohm vs 2 ohm
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=103439
Printed Date: April 28, 2024 at 5:45 PM
Topic: 8 ohm vs 2 ohm
Posted By: gnrfan316
Subject: 8 ohm vs 2 ohm
Date Posted: March 27, 2008 at 9:49 AM
I have 1 Rockford Fosgate P3 12 inch DVC 4 Ohm Sub and a 1200 watt two channel Sony Explod Amplifier. I have heard this sub on smaller amplifiers before and it sounds really good but mine sounds pretty crappy. I have it wired at 8 ohms to one channel (I think) and it sounds like crap. Any suggestions?
Replies:
Posted By: skee-weezy
Date Posted: March 27, 2008 at 11:25 AM
here would be my suggestion...... ebay the sony... and get yourself an amp at the rated rms at 2 ohms... preferably class d mono..... most amps don't produce any serious power at 8 ohms... hence why your setup may not sound good... another thing u can do is get yourself a second sub like the one u have and series-parellel the two to 4 ohms which will allow u to bridge that amp to 4 ohm mono..... ------------- there can be only one.......
Posted By: i am an idiot
Date Posted: March 27, 2008 at 12:41 PM
Connect one voice coil to the left channel of the amp. Connect the other voice coil to the right channel of the amp.
Posted By: haemphyst
Date Posted: March 27, 2008 at 1:01 PM
i am an idiot wrote:
Connect one voice coil to the left channel of the amp. Connect the other voice coil to the right channel of the amp.
There's your cheapest option... And EASY to do, as well! ------------- 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: audioman2007
Date Posted: March 27, 2008 at 2:06 PM
Instead of making a brand new topic, I thought it would be better to ask this in here.... What is the difference (sub performance wise) between 4 ohm and 2 ohm? I have 2 Earthquake DBX's single 4 ohm coil and wanted to know what would be the pros and cons of having them wired in 2 ohm instead of 4 ohm.
Posted By: DYohn
Date Posted: March 27, 2008 at 3:43 PM
audioman2007 wrote:
Instead of making a brand new topic, I thought it would be better to ask this in here.... What is the difference (sub performance wise) between 4 ohm and 2 ohm? I have 2 Earthquake DBX's single 4 ohm coil and wanted to know what would be the pros and cons of having them wired in 2 ohm instead of 4 ohm.
You mean besides the impedance change and the resulting difference in power utilization? Here and Here's a couple recent threads with some discussions for you. The forum search function is your friend. I would like to know how you intend to wire two 4-ohm SVC subs to create a net 4-ohm load? Also, please stoip thread jacking. If you want to ask questions on a new topic, start a new thread. ------------- Support the12volt.com
Posted By: audioman2007
Date Posted: March 27, 2008 at 6:03 PM
If I was to bridge both subs to a 2 channel amp, the subs would be 2 ohms then, but the amp would be 1?
Posted By: sedate
Date Posted: March 27, 2008 at 6:38 PM
audioman2007 wrote:
If I was to bridge both subs to a 2 channel amp, the subs would be 2 ohms then, but the amp would be 1?
Right. ------------- "I'm finished!" - Daniel Plainview
Posted By: audioman2007
Date Posted: March 28, 2008 at 2:04 PM
Hmmm. My old amp was 2 ohm stereo stable. When I first installed my system, I had the same subs (2 SVC 4 ohm 12" subs) and wired them like this: I bridged both subs to the amp which would put the subs at 2 ohms a piece and the amp at 1 ohm. The amp worked perfectly fine. I had to turn the gain on the amp down but it pounded hard, alittle too hard for me, so thats when I changed it to 4 ohm. Now if my amp is 2 ohm stereo stable, why would it work in 1 ohm mono?
Posted By: DYohn
Date Posted: March 28, 2008 at 3:05 PM
audioman2007 wrote:
Hmmm. My old amp was 2 ohm stereo stable. When I first installed my system, I had the same subs (2 SVC 4 ohm 12" subs) and wired them like this: I bridged both subs to the amp which would put the subs at 2 ohms a piece and the amp at 1 ohm.
That would be wrong. If you parallel two 4-ohm SVC subwoofe4rs, the net resistance on the amp is 2-ohms. The speakers do not magically change, they are still 4-ohm speakers. If you connect a 2-ohm load across a stereo amp (bridged) that is only 2-ohm stereo stable, it should shut itself down in protection mode, or it may be able to handle the load in some rare cases, but will operate at much higher distortion levels. ------------- Support the12volt.com
Posted By: forbidden
Date Posted: March 28, 2008 at 3:23 PM
Rewire the sub to the bridged outputs of the amp, wire the sub in series to 8 ohm, this is the same thing electrically as wiring one coil to each channel. Next up, what kind of box is the sub in? The box is going to make or break what is coming out out of the sub.
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Top Secret, I can tell you but then my wife will kill me.
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