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Dipole sub question
Dipole sub question
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Old 14th August 2005, 09:57 PM   #1
needtubes is offline needtubes  United States
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Default Dipole sub question

I have only a single Adire DPL-12 that I was previously using in a sealed box. After I upgraded, it has gone unused. Now, I am wondering if it would be worthwhile to build a H-frame and use it as a dipole sub for upper bass and my new sub for lower bass (maybe a 40Hz crossover between the two). Would this work? Or do dipole subs need to have two drivers for the proper effect? I am quite new to dipole subs and would appreciate any pointers.
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Old 15th August 2005, 02:37 PM   #2
Rudolf is offline Rudolf  Germany
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Default Re: Dipole sub question

Originally posted by needtubes
Would this work? Or do dipole subs need to have two drivers for the proper effect?
There ar two benefits you have with two drivers:
You can get full impulse compensation with two drivers in a W-frame and you get a somehow more symmetrical radiation (and less distortion) with two drivers mounted push-pull in a H-frame.

Apart from that a single driver works as well in a dipole as multiple drivers do. One 12" driver may be a bit small SPL-wise, but you surely should (and can) try the dipole experience.

One caveat: Please donīt put one driver in a H-frame sized for two drivers, since that would unnecessarily enhance the inherent resonance of the frame.
The H-"cube" should be just as high and wide as the driver demands. Depth should be about the same.

BTW: 40 Hz (or even 50 Hz) crossover (as steep as possible) to another sub will be almost perfect since it will disburden the Adire substantially.
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