using resistors on a dvc sub?
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=114767
Printed Date: May 15, 2025 at 9:27 PM
Topic: using resistors on a dvc sub?
Posted By: spmpdr
Subject: using resistors on a dvc sub?
Date Posted: June 29, 2009 at 9:21 PM
I was reading a topic in the stickied topics section about using 1 vc on a dvc sub and i came across,a statement that said you can use a resistor on the unused vc to "tune" a sub.It had a link but it was not able to be found ,Does anyone have info on this subject?
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Replies:
Posted By: stevdart
Date Posted: June 29, 2009 at 10:16 PM
That was a white paper written by Dan Wiggins, address not found anymore. It was adireaudio.com/Files/TechPapers/DualVoiceCoilDrivers.pdf . I don't know where to find his writings now. I believe Steven Kephart is knowledgeble on that subject as he has worked with Dan Wiggins in the past. If I recall correctly, the resistor helps the unused coil dissipate radiant heat. I haven't worked with such a setup though. ------------- 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: ianarian
Date Posted: June 29, 2009 at 10:59 PM
Ah crap, I thot we were settled on this matter...If your digging up info SPM, plz post!
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Posted By: DYohn
Date Posted: June 29, 2009 at 11:29 PM
spmpdr wrote:
I was reading a topic in the stickied topics section about using 1 vc on a dvc sub and i came across,a statement that said you can use a resistor on the unused vc to "tune" a sub.It had a link but it was not able to be found ,Does anyone have info on this subject?
Yes, you can adjust the Q of the woofer that way. Here's the paper referenced above: https://www.adireaudio.com/Files/DualVoiceCoilDrivers.pdf ------------- Support the12volt.com
Posted By: spmpdr
Date Posted: June 30, 2009 at 12:25 AM
I read the pdf ,thanks dyhon. Does anyone know what type and size resistor I would need, and also what is a potentiometer?How would I create a Qts adjustable knob?Ianariian read the pdf very insightful!!!My subs a re audio sr 12 dvc 4ohm 300 watts rms per vc.
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-A vision without a plan is just a hallucination-
Posted By: whiterob
Date Posted: July 01, 2009 at 1:54 AM
spmpdr wrote:
I read the pdf ,thanks dyhon. Does anyone know what type and size resistor I would need, and also what is a potentiometer?How would I create a Qts adjustable knob?Ianariian read the pdf very insightful!!!My subs a re audio sr 12 dvc 4ohm 300 watts rms per vc.
A potentiometer is a variable resistor. You can use it to change the resistance, and thus change the Q of the sub. That is the adjustable knob you would be referring to.
Posted By: spmpdr
Date Posted: July 01, 2009 at 11:33 AM
Do you have any idea what size Resistor i would need for my set up:212" re audio 40hm dvc subs ,ran in parallel one vc per sub. 300 watts rms per coil.
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-A vision without a plan is just a hallucination-
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