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Woofers getting workout, but no bass

I'm puzzled: I'm noticing just about every LP I've played in the past couple days has my 10" woofers moving like mad, but not in time with the music and regardless of whether there's any audible bass.

I can only conclude that I have subsonic frequencies occuring (my phono stage doesn't have a filter). What would cause this?

Relevant components:
Speakers: Wilson Sophia 2's
Turtable: TW Acustic Raven One
Phono stage: Tron Seven

Thanks in advance.
madfloyd

Showing 4 responses by vandermeulen

vandermeulen
191 posts
 
Madfloyd, I dont think those choices will solve the problem. It's a phenomenon we all deal with when it comes to vinyl. Oh, I think the title of your thread is hilarious btw. lol
vandermeulen
191 posts
 
you are experiencing a very typical phenomenon as Vegasears suggests. Only a filter that eliminates those lower frequencies will eliminate this. I would venture to say that the other possible causes mentioned may play a diminuative role also. Seek out an inexpensive filter online and try it out for you to see. Then, after concluding that this may be the case, you can start getting the typical audiophile paranoia of whether this is now altering the overall signature of the music.
vandermeulen
191 posts
 
I have some records that are worse than others when rumble is observed via cone excursion. Same cartridge. Concrete floor...shelves made with carbon fiber/epoxy 1/2 inch thick. The Navy uses this material on bulkheads to minimize internal shrapnel from external explosions. No clamp or other weighted object reduce rumble in my case. Probably in most cases.
vandermeulen
191 posts
 
I just look at mine when they do it...and it hypnotizes me. INTO WANTING MORE EQUIPMENT!!
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