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
albertporter's avatar
Ag insider logo xs@2x
albertporter
4,949 posts
 
Your idea is good, just happened that it brought about another problem. I've had things like that happen ever since I set up my first system.

If you don't make some mistakes you're not trying :^).
rockvirgo
587 posts
 
My turntable, a Dual 1219, was into woofer pumping too. Search A-gon's database for that and you may find more discussion. You're far from alone.
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
More to discover