Woofers going crazy when playing vinyl


I already posted this on Vinyl Asylum but I wanted to get as many opinions as I can.

I was spinning some vinyl for the first time since upgrading my speakers (Odyssey Audio Kismet Reference) and noticed the woofers were moving like crazy. As soon as I lifted the stylus, the woofer pumping stopped. It happens at any level above 83db. My turntable is a VPI Scout which I have had for a couple of years with a ZU Audio DL103 low output mc cartridge. My preamp is an Audible Illusions Modulus 3A with the John Curl gold mc phono boards. My turntable sits on the top of my rack on the cones that came with it and I have never had any problems until I replaced the speakers. The audio rack is a Sanus which sits on cones as well, and yes it is very level as is the turntable

The speakers are coupled to the floor with gold cones I bought from Adonis and they are secure. The turntable/audio rack is across the room from my speakers. I tried the low filter on my preamp but it made no difference. The woofer cones were really moving in and out like crazy!!

Some have suggested moving the speakers (not possible), mounting the Turntable to a wall shelf (not possible), change cartridges (won't), Some mentioned turntable set up, but every setting is right on the money and I had it professionally set up at a very high end store in Newton, Mass and they sell a lot of high end turntables. Others suggested buying a KAB rumble Filter (leaning this way). If I buy the filter, I will also need 2 more quality interconnects and I am not really liking to have to spend a lot more money.

If there is something that hasn't been thought of or you have some thoughts, please chime in. I need my vinyl fix, BAD.

Bob
128x128stereo5

Showing 1 response by atmasphere

I would check with VPI and see what they think of the effective mass/mechanical resonance issues with regards to playing that cartridge in your arm.

The mechanical resonance should be between 7 and 12 Hz, if its off, you can get crazy woofer pumping. The way you describe it, this problem did not show up until you got the table setup done recently- that really points to the arm/cartridge compatibility issue.