2. analog
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Woofer motion problem.

Whenever I hook up a turntable to my rig, or play a flac file that has been recorded from an analog rig, my woofers flutter in and out dramatically more than with even the most intense digital music. I believe this is like flutter and wow that is extremely low frequencies but not sure. I notice these movements during some of the quieter passages on the LPs. Can anyone explain this and tell me whether it can be prevented?
macd
sufentanil's avatar
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sufentanil
782 posts
 
I used to have these problems, as well. They resolved completely with the KAB rumble filter, which eliminates the extremely low frequencies that contribute to the woofer pumping.

Michael
mtandrews
43 posts
 
Back in the day I had a big ol' honkin' reciever (marantz or Technics, can't remember which) that had a switch on it that said Subsonic Filter, if I didn't turn this ON the woofer would do what you are descibing when I played records.
macd OP
103 posts
 
Thanks guys for your responses. Do you think this could harm a speaker?
lngbruno
210 posts
 
This happened to me on a few albums I transfered over to cdR. As someone else stated, you do need a plateamp with a rumble filter. As far as damage goes, I would think this excessive repetitive movement can't be a good thing. Call one of the subwoofer manufactures and ask them.
eldartford
4,262 posts
 
Macd...It is unlikely to harm the speaker, but it does have a bad effect on the sound. Get a rumble filter.
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