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  Dynavector 17D3 hitting clamp on VPI Scout
Hi, everyone. I've got a serious problem with my new Dynavector Karat 17D3. It was professionally installed and set up on my first-generation VPI Scout table with the JMW tonearm. It works fine until the stylus goes into the blank grooves at the center of the record. Then the side of the cartridge hits the VPI record clamp. Aside from the loud crashing sound this produces, the dealer says that the impact may damage the stylus. For the moment, I'm playing records without the clamp. That's not really a good solution, though, since the clamp performs an important function and is recommended by VPI. Have any of you encountered this problem? Any tips for a solution?
Madcitygeoff  (Threads | Answers | This Thread)

06-04-10
  Responses (1-19 of 19)
Click title to read one, or click date to read all below it.

06-04-10   This would seem to be a problem with only certain lps that h ...   Lewm

06-04-10   The karat has a tiny cantilever.. true, delicate not true. t ...   Elizabeth

06-04-10   Thanks for the replies, folks. lewm, i'm not positive, but i ...   Madcitygeoff

06-04-10   Another newbie question.... do turntable mats perform some o ...   Madcitygeoff

06-04-10   I found the same problem with a michell engineering clamp. t ...   Tketcham

06-04-10   hi, a mat won't solve anything for you. it also requires r ...   Islandmandan

06-04-10   Perhaps i am misunderstanding you. clamp goes on top of lp; ...   Lewm

06-04-10   Thanks for clarifying the mat issue. vpi is aware of the pro ...   Madcitygeoff

06-04-10   Geoff, not sure it's a problem with the clamp(s) so much as ...   Tketcham

06-04-10: Elizabeth
My Dynavector 17D3 is on a Kuzma with Stogi S arm. The Stogi weight is tall, but smaller diameter than full label area. So my TT weight is just fine with Karat.
Elizabeth  (Threads | Answers | This Thread)


06-05-10: Madcitygeoff
I did a little more research and found the KAB Record Grip Mark II, which is a clamp and not a weight, with a diameter of 3", a half-inch less than the VPI clamp. That extra space might be enough clearance for the 17D3.

Thanks again to everyone for all your help!

Madcitygeoff  (Threads | Answers | This Thread)


06-05-10: Islandmandan
On the subject of mats/clamps, I am using a TTW copper mat, with the heavy brass VPI TTW clamp. To get the clamp to work with the mat, I had to modify it by grinding down a 1/4" 20 nut to just the right size, and pressing it into the clamp, to make the threads extend down far enough to enable tightening the clamp on the lp. I then squeezed the VPI washer between two steel plates to the proper thickness and baked it at 300 degrees for about 25 minutes. It is just the right thickness. The TTW clamp has a concave radius on its bottom side, so when the clamp is tightened, all but the very worst warps are flattened out and playable. A very important benefit is the solid contact now between the bottom of the lp, and the Mapleshade Integrated Record Coupling System, which concentrates the area of contact to three points on the copper mat. This helps to drain vibration into the mat(s), which has made vinyl playback have a clarity I have never heard before from my table. This works, but feel I must be some kind of nutcase whenever I mention it, as no one seems willing to try it. Pierre Sprey may be eccentric, but he is not a nutcase, and the proof is in the listening.

Yours in music,
Dan

Islandmandan  (System | Reviews | Threads | Answers | This Thread)


06-05-10: Elescher
I have a VPI "Classic" and experienced the same problem as the OP. I have a TTW lightweight stainless center weight, a TTW copper peripheral ring, and I have an Ortofon A90 cartridge mounted. I also have a Boston Audio Design mat. In my case it was the headshell that ended up hitting the center weight not the cartridge, but the result was the same; probably the worse noise I have ever heard come from a turntable. As it turns out, I decided I prefer the sound of the table without the center weight, but absolutely, no question, prefer the set up with the periphery ring.
Elescher  (System | Threads | Answers | This Thread)


06-05-10: Madcitygeoff
Dan, I wish I had your patience and mechanical skill. If I attempted a project like that, I'd either cut off a finger or burn down the house. I'm afraid I'm stuck with commercial solutions for now.

On the subject of weights and possible damage to the platter bearing, I see that VPI makes a weight for its own tables. I assume that means that the Scout could bear the extra weight with no problem.

Madcitygeoff  (Threads | Answers | This Thread)


06-06-10: Islandmandan
Geoff, I have made that assumption. As long as the bearing stays lubricated, I believe it to be plenty stout enough to handle the extra weight. Between the copper mat and the brass clamp, it's probably close to an extra five pounds it is supporting. All I know is the sound from the Scout is astounding to me now, I feel I have finally fulfilled the promise that vinyl offered, but eluded me for years, until I figured out how to unlock the secrets to fulfill that promise. Whew! At last!

Best of luk,
Dan

Islandmandan  (System | Reviews | Threads | Answers | This Thread)


06-06-10: Kadaju
Years ago I used a Clearaudio Gamma, a very wide cartridge that did the same thing on my HW19III--I special-ordered a one-piece clamp from VPI- it looked like they ground the outside of the tapered perimeter of the clamp-problem solved. There is still about 1/8" of material around the perimeter that actually presses down on the record. I've used this clamp for 8-9 years now with no problems; of course I'm using a different cartridge now.

I do think the machine shop might be the answer, or you might call VPI for their recommendation

Kadaju  (Answers | This Thread)


06-11-10: Madcitygeoff
Problem solved. I upgraded the 17D3 to a DV XX2 which has a narrower body.
Madcitygeoff  (Threads | Answers | This Thread)


06-26-10: Csng1
Hi Madcity i have the same problem as you, so instead of changing or up grade to a Furutech Monza which is 3" dia vwhich work fine vs new dyna xx2,
i think your choice is much better. i have tested the Furutech monza very little improvement
i have 60 hrs on my 17D3, may i ask how much improvement you get, and what is the different price you pay.
thanks
Chris

Csng1  (Threads | Answers | This Thread)


06-26-10: Stringreen
I've heard of this problem a few times. If you send your clamp back to VPI, they will take a sliver off of the periphery. Problem solved
Stringreen  (System | Threads | Answers | This Thread)



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