Posted by Wayne Parham [ 67.66.228.5 ] on September 10, 2004 at 11:58:38:
In Reply to: Wayne, any update on new LAB12 woofer? posted by Adam on September 09, 2004 at 19:43:37:
I spoke with them about a month ago and they were still working on it. Here's a post about their response. I'll write to them again and provide status info here.
The thing that's holding them up is the shorting ring. Apparently, the first prototype reduced distortion by the amount required, but not down at as low frequency as required. Distortion improvement was only above 150Hz, and for a subwoofer, that's not low enough. The requirements stated distortion reduction should be down to at least 50Hz. This requires a very large shorting ring, and that in turn requires different materials and placement which also necessitates different machining.
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