Wiring 3 Ohm Speakers to 2-4 Ohm Rockville Amp
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=145419
Printed Date: May 14, 2025 at 10:45 PM
Topic: Wiring 3 Ohm Speakers to 2-4 Ohm Rockville Amp
Posted By: hemi10
Subject: Wiring 3 Ohm Speakers to 2-4 Ohm Rockville Amp
Date Posted: May 16, 2019 at 9:03 PM
Can anyone give some suggestions on wiring 2 jbl 6.5" 2.3ohm speakers and 2 jbl 6x9 3ohm speakers to a 2-4ohm 4 channel Rockville amp ? I also wanted to add 2 3.5" speakers in the dash to give the system more of a surround sound setup but I'm not sure that it will be possible, if so what ohm should I buy ? I read some information on wiring resistors in that change ohms but didn't fully understand. Also came across some more information in regards to using the head unit speaker outputs. So if anyone can help me with how to wire my setup I would appreciate it.
------------- Hemi10
Replies:
Posted By: i am an idiot
Date Posted: May 17, 2019 at 5:21 AM
Connect 1 speaker to each channel of the amplifier.
Posted By: gshookupz
Date Posted: May 17, 2019 at 1:28 PM
there should be no issue at all.
Observe correct polarity and thats it. Maybe use the front left and right output of the deck on those threes up in the dash.
Or reconsider those threes and get some nice tweeters up there where the imaging is best. If your gonna use the threes, I would protect them by using a 200mfd non directional cap to block the lows off them. this is an old school 6db passive crossover.
Just install on positive line at the speaker.
hope this helps!
------------- Do it movin! "I still have the Twindows modules from My 86 mr2 in the bottom of my box"
Posted By: hemi10
Date Posted: May 17, 2019 at 1:37 PM
Both good answers, doesn't sound so complicated as I was thinking. Tweeters in the dash, ok , should I purchase a pair that are the same ohms as the rest of my speakers ? And running off the head unit which is a Kenwood ddx795 and less power then the speakers that will be driven from my 4 channel amp will the tweeters or really any speakers installed in the dash be worth it as far as the difference they will make over not having them ? Thanks again !
------------- Hemi10
Posted By: i am an idiot
Date Posted: May 17, 2019 at 7:04 PM
I missed the part about the dash speakers. You will need to install a capacitor in series with the 3.5 inch drivers. 100 volt non polarized. I will find the chart you need to determine the value of the capacitors. I will post it in a second.
Posted By: i am an idiot
Date Posted: May 17, 2019 at 7:09 PM
Posted By: hemi10
Date Posted: June 19, 2019 at 7:06 PM
Thanks for your help !
------------- Hemi10
|