ohms
Printed From: the12volt.comForum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=14064
Printed Date: July 09, 2025 at 7:48 PM
Topic: ohms
Posted By: davywavy4186
Subject: ohms
Date Posted: May 27, 2003 at 5:28 PM
Replies:
Posted By: xetmes
Date Posted: May 27, 2003 at 7:55 PM
the "ohm" is the load DC resistance, if you look up the maximum power transfer theorm you will read that maximum power tranfer occurs when the source has the same internal resistance (thevinin) as of the load. Lower the resistance tho will cause more current draw (P=I^2 * R), and therefore more heat. That is why it is important. Note: i call it the DC resistance because impedence in a coil changes resulting from the change in frequency.
RCA-that company 
, refering to the signal wires most likely
Posted By: wvsquirrel
Date Posted: May 27, 2003 at 10:52 PM
Technical answer is ohms law
Laymens terms, ohms is the measure of resistance.
Less Ohms = Less Resistance = More Power and better efficiency
Multiple subwoofers can be wired to achieve a different "total" ohm load than just one of the subs. For example, if you have one 4ohm SVC (single voice coil) sub then you can only wire it to an amplifier at a 4ohm "total" load. But, if have two 4ohm SVC subs, then you can wire each sub on it's own channel at a 4ohm "total" load per sub, or you can combine the wiring for the subs and produce either a 2ohm or 8ohm "total" load. Here's some links to online wiring wizards that may help show the differences...
JL Audio Wiring Wizard and Rockford Fosgate Wiring Wizard
An RCA cable is also refered to as a "patch cable". Here's a picture of one...
-------------
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com
Laymens terms, ohms is the measure of resistance.
Less Ohms = Less Resistance = More Power and better efficiency
Multiple subwoofers can be wired to achieve a different "total" ohm load than just one of the subs. For example, if you have one 4ohm SVC (single voice coil) sub then you can only wire it to an amplifier at a 4ohm "total" load. But, if have two 4ohm SVC subs, then you can wire each sub on it's own channel at a 4ohm "total" load per sub, or you can combine the wiring for the subs and produce either a 2ohm or 8ohm "total" load. Here's some links to online wiring wizards that may help show the differences...
JL Audio Wiring Wizard and Rockford Fosgate Wiring Wizard
An RCA cable is also refered to as a "patch cable". Here's a picture of one...
-------------
Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
Donate to the12volt.com