amps, speakers, ohm rating
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=116621
Printed Date: May 06, 2024 at 10:52 PM
Topic: amps, speakers, ohm rating
Posted By: kaztheminotaur
Subject: amps, speakers, ohm rating
Date Posted: September 30, 2009 at 7:05 AM
Lets say I am looking at an amp that is rated at 75W X 4 @ 4 ohms and 100W X 4 @ 2 ohms. If I hook up a 2 ohm dual voice coil sub and 4 ohm components will I get 100W to the sub and 75W to the components? Or do all the speakers on the amp need to have the same ohm rating?
Replies:
Posted By: i am an idiot
Date Posted: September 30, 2009 at 7:48 AM
You will be sending 200 watts to the sub, and 75 watts to each door. Your speakers do not have to be the same. This setup will be fine.
Posted By: kaztheminotaur
Date Posted: September 30, 2009 at 9:09 AM
Each voice coil should be wired seperately right? Not series or parallel?
Posted By: i am an idiot
Date Posted: September 30, 2009 at 11:41 AM
You said you only had one set of terminals on your box. Bridging the amp and wiring the voice coils in series will be your best bet.
Posted By: speedtrip
Date Posted: September 30, 2009 at 2:51 PM
I think it was me who only had 1 terminal on my box. similar question though. https://www.the12volt.com/installbay/forum_posts.asp~TID~116616~PN~1#567597
Posted By: i am an idiot
Date Posted: September 30, 2009 at 6:24 PM
speedtrip wrote:
I think it was me who only had 1 terminal on my box. similar question though. https://www.the12volt.com/installbay/forum_posts.asp~TID~116616~PN~1#567597
That was definitely the case. You can wire one voice coil to each channel of the amp, or bridge the amp and run the voice coils in series. The amp will make the same amount of power into either of the 2 configurations.
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