using resistors on a dvc sub?

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spmpdr

Copper - Posts: 456

Joined: March 22, 2009

Location: Oregon, United States

Posted: June 29, 2009 at 9:21 PM / IP Logged

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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stevdart

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Joined: January 24, 2004

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Posted: June 29, 2009 at 10:16 PM / IP Logged

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.

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ianarian

Copper - Posts: 516

Joined: April 24, 2009

Location: California, United States

Posted: June 29, 2009 at 10:59 PM / IP Logged

Ah crap, I thot we were settled on this matter...If your digging up info SPM, plz post!

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DYohn

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Posted: June 29, 2009 at 11:29 PM / IP Logged

spmpdr wrote:

Yes, you can adjust the Q of the woofer that way. Here's the paper referenced above: http://www.adireaudio.com/Files/DualVoiceCoilDrivers.pdf

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spmpdr

Copper - Posts: 456

Joined: March 22, 2009

Location: Oregon, United States

Posted: June 30, 2009 at 12:25 AM / IP Logged

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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whiterob

Copper - Posts: 351

Joined: July 22, 2007

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Posted: July 01, 2009 at 1:54 AM / IP Logged

spmpdr wrote:

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.

spmpdr

Copper - Posts: 456

Joined: March 22, 2009

Location: Oregon, United States

Posted: July 01, 2009 at 11:33 AM / IP Logged

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.

-A vision without a plan is just a hallucination-

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using resistors on a dvc sub?

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