Hi James!
> You have my attention big time. I desperately wish
> to read some of the accompaning articles which are
> linked to on the page, Alas I find the links are
> broken... (In particular the vented vs
> sealed...but also the damping Q...)
Those pages arn't actually written yet though. I originally planned on making a website with lots of technical stuff, and I still do plan on that, but it will have to come later when I have the time to write them up. I'll keep you posted though.
> Lets look at very low frequency drivers (since this
> is the subwoofer forum and all...) The rage in
> commercial subs are the long throw low Q super
> xmax drivers ...(Tempest, Stryke, Dayton... etc) Do
> you think that application of pro-subwoofer drivers
> would lead to better results? (Lower distortion?)
In a word, yes. The best pro drivers have very low distortion, such as the JBL ones, and they do sound very clean. Thats described in my last post. But they do come at a much larger cost, and unless your willing to spend lots of money or you are determined on having absolute minimal distortion, then the commercial drivers would be the way to go. But look for second hand - you can usually pick up quality pro drivers for a lot less. Some of my favorite 18"ers are the JBL 2245H, 2241H and 2242H, and also the TAD 1602 and Eighteen Sound 18LW1400. All have very low distortion and sound real good. As for 15"ers, JBL 2235H, 2234H are both very good bottom octave performers. JBL 222x series are also good for midrange and bass applications. I personally use the 18LW1400 for subbass, and also I have a pair of JBL 2225H's that I'm using for midbass, but they can be used for subbass applications too. Both are very clean and capable drivers. You can hear the difference too. One part of their reduced distortion is the use of copper shorting rings or faraday rings which highly contribute to reduction in harmonic and intermodulation distortion. But they are also very good motors, and have other features which make them an excellant choice for low distortion subwoofer applications.
But again, dont think that commerical drivers are bad, because they arn't. But the fact is that pro drivers are made to more bleeding-edge levels and do offer much better performance than commerical offerings.
Adrian
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