Sub question rg 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=59031
Printed Date: May 13, 2025 at 8:27 PM

Topic: Sub question rg ohm rating

Posted By: crimsondave
Subject: Sub question rg ohm rating
Date Posted: July 07, 2005 at 9:39 PM

I can get a much better price on JL w3 rated at 6 ohms that at 4 or 2.

My question is, since w3s are dual voice coil, by hooking the subs coils up in parallel, I would actually be able to operate at 3 ohms, and not be loosing power, correct? Any reason I should avoid doing this?

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Replies:

Posted By: crimsondave
Date Posted: July 07, 2005 at 9:40 PM

should have been "not loose much power" would be operating 1 ohm higher than 4 ohm dual voice in parallel.

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Posted By: stevdart
Date Posted: July 07, 2005 at 10:00 PM

Are you using one sub...and with what type of amp (two channel, mono)?

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: crimsondave
Date Posted: July 07, 2005 at 10:06 PM

JL 300/4..........3 ohm stable bridged. Thinking about 1 sub for now.

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Posted By: stevdart
Date Posted: July 07, 2005 at 10:23 PM

OK...150 watts looks like the optimum power to give that sub (W3v2). That amp will produce the same power whether the impedance load is 3 ohms or any number up to and including 8 ohms, so you'll do well to get your good deal on the sub. Use two channels bridged for the sub and the other two channels for your mains.

https://www.jlaudio.com/amps/3004.html

https://www.jlaudio.com/subwoofers/pdfs/12W3v2_MAN.pdf

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

Posted By: crimsondave
Date Posted: July 07, 2005 at 10:26 PM

Thanks!

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