2. analog
  3. 1379095521

Low frequency problem while playing vinyl

Has anyone experienced (and knows a cure for) a very low frequency problem while playing records. Just recently I hooked up two old turn tables, Linn LP12 (1980s) and Dual 704 (1980) in my system and the woofers of my speakers are almost jumping out of the speaker cabinets while I am listening to a record. Displacement at least 0.5 inch if not more and the keep "pumping". Needless to say that I didn't experience this issue years ago when I used to play records regularly.

amps: Krell Ev202/350MCx
speakers: Thiel CS7 + smart sub
phono amp: Valvet
whiskeyhill
jonbok
9 posts
 
Most full function preamplifiers had rumble filters built in to phono stages back when everyone listened to vinyl. Glad you got it sorted
sbrownnw
692 posts
 
My pro-ject Xpression III had this low freq response proem with pumping woofers. I first tried using the subsonic filter on my pro-ject tube box, it helped a little. It also reproduced when I upgraded to a new jasmine phono preamp. The problem finally went away after upgrading my table to a new RP6. I guess some tables have this issue and some don't, depending how well the motor is mounted and isolated and how well the table is designed, including the arm.
sbrownnw
692 posts
 
Also forgot to mention both tables were used on a rigid wall shelf mounted to the studs of a load bearing wall
More to discover