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

I have an AI Modulus 3 and an ARC SP11 mk II.

When using the AI with filter on there is still alot of woofer movement on my 801 matrix s3 speakers.

When using the ARC preamp with filter on there is minimal movement.
LOL, I'd say Knownothing knows quite a lot. ;-)

Stereo5,

I'm happy you're happy but the problem is not "solved". It's papered over. You can't eliminate mechanical behaviors in a source component with a downstream electrical filter. That's nonsensical. A genuine solution requires investigating the root cause and addressing it directly.

Your cartridge is still vibrating at the same low frequency. You've attenuated the resulting signal before it reaches your amp and woofers but it's still muddying the signal path from cartridge to preamp (not to mention shortening the lifespan of your cartridge). We never hear such mud until we eliminate it, at which point we're inevitably astonished at how much more music there is. That would indeed be Audiophile Heaven.

The most likely cause of this problem is the demonstrable mismatch of a Denon 103 on a JMW 9, with ineffective TT isolation being the next most likely. Several knowledgeable posters tried to suggest this. There's more vinyl expertise here than at fifty Goodwin's and that's presumably why you asked. Why request expert guidance if you're determined to ignore it?

Your a priori refusal to investigate the real problem or consider real solutions dissuaded me from answering. I commend those who tried, but why bother? I'm only posting now to warn others who stumble across this thread and mistakenly believe you've found the optimal solution. You haven't.
Dougdeacon,

I half agree with you. Stereo5's problem was caused by acoustic feedback. Putting in a rumble filter basically interrupted the feedback loop. Of course an ideal solution would be to relocate the TT but since he has placement constrain, rumble filter is a good fix.

If the problem were caused by cart/arm mismatch, oscillation should happen regardless of volume level which was not the case here. Oscillation only started when volume was above a certain level. It was acoustic feedback.