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sub wiring

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=112479
Printed Date: May 14, 2025 at 2:17 PM


Topic: sub wiring

Posted By: teddy812
Subject: sub wiring
Date Posted: March 18, 2009 at 7:31 PM

i have 3 jl 13w7 and rockford fosgate t4000x1 bd.

how do i wire those subs?

and how much cu/ft need? (each sub)

sub 1500w  dual 1.5 ohm

amp 4000 watts rms x 1 ohm

         3000 watts rms x 2 ohms

         2000 watts rms x 4 ohms



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full throttle



Replies:

Posted By: i am an idiot
Date Posted: March 18, 2009 at 7:49 PM

Wire the coils of each woofer in series.  Then parallel the 3 woofers at the amp for a 1 ohm load.  The diagram below shows 2 ohm voice coils for a 4 ohm load per woofer.  Your result will be 3 ohms per woofer.

Option 2 (series) = 4 ohm load
Voice coils wired in series
Recommended Amplifier: Stable at 4, 2, or 1 ohm mono
posted_image

Wire each of your 3 woofers in the above manner.  Connect the 3 positive wires to the positive terminal of the amp.  Connect the 3 negative wires to the negative terminal of the amp.


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