2. analog
  3. 1269719900

Woofers Gone Wild

Rega P3 with 301 arm/Sumiko BPS III. Even at lower levels, woofers in my B&W 803's are going nuts, flopping around all over the place (and I would imagine, sucking up lots of juice in the process).

Is there compliance mismatch here? From what I can tell, all should be well within the desired range. But still the woofer action.

TT is equipped with Black Diamond Racing footings, and is well placed. All adjustments on table checked/rechecked.

Am going to have a beer and not think about it for a while. Any others with this situation, or any solutions out there?

Thanks for any help,

Doc
docwoof1961
sufentanil's avatar
Ag insider logo xs@2x
sufentanil
782 posts
 
I used to have that problem, too. Some phono preamps don't filter out the very low frequencies, and this ends up getting transmitted to your amp and speakers.

Here is your solution:

KAB rumble filter

Michael
Post removed 
actusreus
733 posts
 
Most likely culprit is rumble. I had the same problem and got the KAB filter referenced in the first response to your post and never looked back. To be fair, you should examine a mechanical solution to your problem first (compliance, damping, etc.), but it might very likely be the pesky rumble that's so common with vinyl causing the problem. If so, get the filter; your woofers will thank you and you'll be able to sleep at night.
docwoof1961 OP
1 posts
 
Thanks to all!!!

I tried the feedback test, and all was well. So am going to give the low-pass filter a shot. The reviews of the KAB filter are pretty impressive!

Again, thanks for your help guys.

Doc
Post removed 
More to discover