2. analog
  3. 1299552220

Woofer sucking in and out

I have a problem with my analogue set up that once it starts play, the woofers of my speaker will move in and out like crazy, unrelated to the music! It relates with volume as when the volume is low, the woofers will not move as much. May it has to do with oscillation between cartridge and arm but my set up is new. The turntable is Acoustic Solid-Transparent and rega301 arm with cardas wiring and weight mods, Herron VTSP 3A pre and VTPH phono. I wonder if placement has anything to do with it or power connection.
I hope someone who has the same problem before can give me some hints.
Thanks.
luna
04rdking's avatar
04rdking
178 posts
 
There is absolutely nothing wrong with equipment being in between the speakers. 99.9% of systems are setup this way. Of course, ideally, the speakers should be farther out in the room than the rack the equipment is on.

I suspect, as others have said, you have an isolation problem, or a mismatch betweem arm and cart.
hhiggins's avatar
Ag insider logo xs@2x
hhiggins
66 posts
 
Intermintant DC leaking from power amp could cause woofers to move???
Ag insider logo xs@2x
ncarv
983 posts
 
You may need a subsonic filter. Read this:

Subsonic Filter
luna OP
235 posts
 
I can rule out DC leak as there is no problem with CD playing. Thanks.
luna OP
235 posts
 
I have moved my TT to another spot at the back with some success. The movement is not as big as before. I call the manufacture and he said some movement is OK as long as it does not bottom out the woofers. I also find the movement heavier at the outer rim and less when the arm reaches the middle of the LP. Does that means it is related to the arm's set up?
More to discover