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Subwoofer damping

I didn't no whether to post this in the speaker or tech forum, but I'll ask my query.

I have a very large subwoofer which has 2 16 inch drivers. I fired this baby up today after having it in storage for many years. I played a reference recording of Frederick Fennell's Pomp & Pipes. Well I set the crossover pots at 10:00, 6 being the lowest and 5 highest. Everthing was ok till there was some low and I mean low frequency with plenty of dynamics. I could hear the drivers make a girgle sound that came out the 4 vents in the cabinet.

I can't recall if I've heard this before and I'm thinking that I need to add additional damping material. Doe's anybody supply speaker wool anymore? I can't imagine overdriving this thing....I think my house would collapse...so adding more material seems might help. Any speaker tech's with answers would be appreciated.

Roger
wavetrader
wavetrader OP
260 posts
 
Once you're familiar with some of the lanugage and parameters, you can then approach the designer to figure out whether or not he was smoking something when he built it . . . and maybe exactly what he was thinking.

I 'll say thanks......but do you really know everything.
audiokinesis
2,737 posts
 
I suspect Wavetrader's designer knew what the heck he was doing. Seven cubic feet per woofer sounds quite reasonable to me; back when the estimate was twenty cubic feet per woofer I had my doubts.

Duke
jtwrace's avatar
jtwrace
443 posts
 
Kirkus,

Couldn't agree more...I use the Ashly 3.24 CL and love it. It replaced a Blah...eringer.
kirkus
502 posts
 
I 'll say thanks......but do you really know everything.
Oh God no . . . please, I didn't mean to offend.

In my experience two extremely important pieces of information in problem diagnosis are "Did this thing ever work correctly?" and "Can this thing work correctly as designed?". And when I work on equipment and installations that are both one-of-a-kind and, to a certain extent, unconventional . . . I always have to keep these these questions squarely in mind.

I was just trying to suggest some methods for you to do the same.
wavetrader OP
260 posts
 
Kirkus your a good man with good advice.

Roger
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