Posted by Duke [ 63.87.108.184 ] on November 10, 2005 at 01:40:25:
In Reply to: Black Hole 5 vs. Sonic Barrier - Any opinions? posted by gumby1 on November 09, 2005 at 03:01:34:
I bought some Sonic Barrier once. Maybe I got a bad batch, but the stick-um on it was pretty weak, and it started falling off the enclosure walls before I had finished installing the drivers.
Can't comment from experience on the effectiveness of either one in a subwoofer application, but one of the manufacturers I represent uses Black Hole 5 in the "hot-rod" versions of his full-range speakers.
In a subwoofer enclosure, I'd be inclined more towards making the enclosure walls super-stiff, to drive the resonant modes above the subwoofer's passband, and then putting some polyfill in the box to eat up residual lower midrange energy. If the crossover is low enough and steep enough, you might not need any polyfill. But I don't think either Black Hole 5 or Sonic Barrier is going to do much at subwoofer frequencies.
Duke
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