2. analog
  3. 1247782228

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

Showing 2 responses by eldartford

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.
eldartford
4,262 posts
 
Viridian...A properly designed rumble filter eliminates difference signal between channels, which is vertical groove modulation, and which constitutes most of the problem. Some overall attenuation below 20 Hz, such as provided by some preamps, is also desirable, but getting rid of the difference signal is most important.

By the way, when LPs are mastered, for various reasons, low frequency differential signals are cut, so you don't loose any real music signal when you use a rumble filter.
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