Yamaha GT-2000 Turntable Social Group

[brunomarcs]

It would seem that with the larger bearing assembly, it is possible to build an X out of a standard model. The only really odd thing is that the vintage knob lists wow & flutter as 0.025% for the X and 0.005% for the standard 2000 & L. Surely this is a typo.

Don’t you have both models? I’m sure you’ve had them apart, are the spindle and bearing easily removed and re-installed? Probably not feasible to try and replicate let alone required, the vin knob says it’s needed to support the extra platter weight but I don’t believe that.

 

[808_state]

Don’t you have both models? I’m sure you’ve had them apart, are the spindle and bearing easily removed and re-installed? Probably not feasible to try and replicate let alone required, the vin knob says it’s needed to support the extra platter weight but I don’t believe that.

I have a 2000 & 2000L. The X, a CX-10000 and probably an HX-10000 (that I will modify for modern carts) are at the top of my wish list. I'm sort of taking my time with the enjoyment thing. According to Teknissen it's not too hard to get the bearing plate apart. The only issue might be room for the larger bearing cylinder inside a standard model. The internal height/room inside the X is likely taller.

 

[Tekniknissen]

I measured the clearance inside the motor assembly while having mine apart and there is just not enough room for beafier bearing. As seen in the pics some posts before it can be seen that the bearing have a much bigger outer diameter. The PCB that carries the windings inside the motor have a hole just big enough for the original "small bearing" top section. I tried to figure how much that PCB could be altered but there are tracks of copper running too tight to that center hole. Maybe just a few mm can be found but not enough to what seems to be something close to +50% or maybe +100% thicker bearing. Pics below shows PCB with windings and that top section coming thru that PCB.

Edit: Look at that pic again with the two different bearings. The end of the spindles shaft seems to have the same dome at the end. That end takes up all the weight so basically the two does the exactly same work. Only more bearing surfaces to take up side forces and not any big difference to stand higher weight. That's my opinion. OK that bottom part of the bearings housing seems to be able to carry more weight but it's still the same size of those domes I believe.

 

[Mark B]

Don’t you have both models? I’m sure you’ve had them apart, are the spindle and bearing easily removed and re-installed? Probably not feasible to try and replicate let alone required, the vin knob says it’s needed to support the extra platter weight but I don’t believe that.

That information on TVK is incorrect. The YGT-1 was an optional accessory for the base model GT-2000 and GT-2000L.

@theophile covered this in detail in the following thread: https://audiokarma.org/forums/index.php?threads/turbocharger-for-yamaha-gt-2000.660064/

 

[808_state]

I measured the clearance inside the motor assembly while having mine apart and there is just not enough room for beafier bearing. As seen in the pics some posts before it can be seen that the bearing have a much bigger outer diameter. The PCB that carries the windings inside the motor have a hole just big enough for the original "small bearing" top section. I tried to figure how much that PCB could be altered but there are tracks of copper running too tight to that center hole. Maybe just a few mm can be found but not enough to what seems to be something close to +50% or maybe +100% thicker bearing. Pics below shows PCB with windings and that top section coming thru that PCB. View attachment 1599510

Edit: Look at that pic again with the two different bearings. The end of the spindles shaft seems to have the same dome at the end. That end takes up all the weight so basically the two does the exactly same work. Only more bearing surfaces to take up side forces and not any big difference to stand higher weight. That's my opinion. OK that bottom part of the bearings housing seems to be able to carry more weight but it's still the same size of those domes I believe.

It would be really cool to see the two assemblies fitted to the respective motors side by side.

 

[Mark B]

It would be really cool to see the two assemblies fitted to the respective motors side by side.

Yes it would. Here's a view of the GT-2000 & GT-2000x with the platter removed:

 

[Mark B]

GT-2000 motor assembly:

 

[808_state]

Yes it would. Here's a view of the GT-2000 & GT-2000x with the platter removed:

View attachment 1599552 View attachment 1599556 View attachment 1599557 View attachment 1599558

If I ever get one the first thing I will do is crack it open and take pics.

 

[808_state]

The perplexing thing about the larger diameter bearing in the 2000x is that all of the 2000 series are rated to cope with the same heavier gunmetal platter. So it doesn't stand to reason that the beefier bearing spindle is necessarily needed to carry extra weight. It would be nice to understand the reasoning behind this modification of the bearing.

Maybe some attempt at dampening the bearing against vibrations. Whatever the wow and flutter is for the X, I would hope its half of the standard table. Otherwise it's pointless and I doubt that they would have engaged in fruitless pursuits unless there were measurable improvements.

 

[tuffgong]

It is possible that vibration damping would be changed, in some manner, by a different dimensioned bearing(of different alloy?). The mere fact that the Direct Drive motor bearing doubles as the platter bearing automatically means that bearing quality looms as a huge factor in vibration transmission/generation. Totally plausible.

We now have more than one member who owns both a GT 2000 or L and a GT 2000x. Similarly we have more than one member with stock platter and gunmetal platter. I will never push anyone to compare anything and I beg all reading this to also respect that. Despite having said that just because I would never push anyone to make the comparisons, should anyone actually make those comparisons(and it could get complicated), there would be many people who would love to read the impressions garnered.

I would bet a Gonad that the Japanese know all about this and know exactly whether there is merit deserved by some combinations and more merit deserved by others. My gut feeling tells me that top of the heap would be: GT 2000x with gunmetal platter and YOP.

I’ve been trying to execute the A/B comparison with the platters. It really is about getting a freind over to help.
The placement of my deck and the ease of removal by one person has been the challenge.
Not willing to risk it by myself.
But I’m working on a getting a friends help
Stay tuned.

 

[Mark B]

It is possible that vibration damping would be changed, in some manner, by a different dimensioned bearing(of different alloy?). The mere fact that the Direct Drive motor bearing doubles as the platter bearing automatically means that bearing quality looms as a huge factor in vibration transmission/generation. Totally plausible.

We now have more than one member who owns both a GT 2000 or L and a GT 2000x. Similarly we have more than one member with stock platter and gunmetal platter. I will never push anyone to compare anything and I beg all reading this to also respect that. Despite having said that just because I would never push anyone to make the comparisons, should anyone actually make those comparisons(and it could get complicated), there would be many people who would love to read the impressions garnered.

I would bet a Gonad that the Japanese know all about this and know exactly whether there is merit deserved by some combinations and more merit deserved by others. My gut feeling tells me that top of the heap would be: GT 2000x with gunmetal platter and YOP.

From post #1024:

I've listened to the GT-2000 with SS platter extensively and switched between the SS platter and the aluminum platter playing the same piece of music. I prefer the SS platter. IMO it makes a bigger difference than the external power supply.

I did another comparison today of the stock GT-2000 platter and aftermarket YGT-1 in stainless steel. Tracks used:

Leonard Cohen ~ You Want It Darker
Leonard Cohen ~ Treaty
Fotheringay ~ Banks Of The Nile

The results were consistent with all 3 tracks. The music was more focused and coherent and bass was deeper and more palpable with the SS platter. The improvement is distinctly greater than that yielded by the YOP-1 compared to the internal power supply.

It will be interesting to compare this less than perfectly executed SS platter to the Artisan Fidelity SS and copper platters that I'll be ordering in a couple of months.

 

[Duffinator]

I'm interested in your results on the SS platter but looking at Artisan's website I suspect the platter will cost multiple times what I paid for my GT-2000. My son is a senior in high school and is enrolled in an engineering class. They just got a new CNC machine and the instructor has asked the students for projects. My son plans on making a new record clamp. A year ago I purchased the same clamp @Mark B purchased out of Eastern Europe. I like it a lot and my son wants to make a similar one for my Pioneer PL-630 that he uses in his setup. He wants to change the looks a bit and it won't be as heavy. We'll see how it turns out. If he's able to make one and their machine has the capability to make something as large as a platter maybe I'll have him make one. Not holding my breath on that but stay tuned.

On another note has anyone ever played a 45 on the GT-2000? I recently purchased a high quality pressing of a new release single from a Rockabilly band I follow out of the Netherlands, Miss Maryann and the Rag Time Wranglers, and I was surprised how good it sounded. I don't have a record clamp that fits over the 45 adaptor though.

 

[tuffgong]

I'm interested in your results on the SS platter but looking at Artisan's website I suspect the platter will cost multiple times what I paid for my GT-2000. My son is a senior in high school and is enrolled in an engineering class. They just got a new CNC machine and the instructor has asked the students for projects. My son plans on making a new record clamp. A year ago I purchased the same clamp @Mark B purchased out of Eastern Europe. I like it a lot and my son wants to make a similar one for my Pioneer PL-630 that he uses in his setup. He wants to change the looks a bit and it won't be as heavy. We'll see how it turns out. If he's able to make one and their machine has the capability to make something as large as a platter maybe I'll have him make one. Not holding my breath on that but stay tuned.

On another note has anyone ever played a 45 on the GT-2000? I recently purchased a high quality pressing of a new release single from a Rockabilly band I follow out of the Netherlands, Miss Maryann and the Rag Time Wranglers, and I was surprised how good it sounded. I don't have a record clamp that fits over the 45 adaptor though.

View attachment 1600903
View attachment 1600904

You have a very fine display. Looks amazing. Props to the Clash. One of my all time favorites. Im going to check out miss maryann and the ragtime wranglers

Question to all on MC carts being used on their YSA-1.
any recommendations?
I had the Denon 103 it was not for me.
Anyone tried Shelter? Hana? Lyra etc?

 

[808_state]

You have a very fine display. Looks amazing. Props to the Clash. One of my all time favorites. Im going to check out miss maryann and the ragtime wranglers

Question to all on MC carts being used on their YSA-1.
any recommendations?
I had the Denon 103 it was not for me.
Anyone tried Shelter? Hana? Lyra etc?

Much love for the Clash!

The YSA-1 is a high mass arm. The effective mass is 32 grams whereas the YA-39 is only 22 grams. The best luck I had was with the Yamaha MC-100 which weighs about 10 grams and tracks at around 1.6 or 1.8 grams. Based on
specs I think the Sumiko Blackbird would probably be a good fit. I'm guessing that Theo guy has tried a cart or two (or three) with the YSA-1...

 

[808_state]

I'm interested in your results on the SS platter but looking at Artisan's website I suspect the platter will cost multiple times what I paid for my GT-2000. My son is a senior in high school and is enrolled in an engineering class. They just got a new CNC machine and the instructor has asked the students for projects. My son plans on making a new record clamp. A year ago I purchased the same clamp @Mark B purchased out of Eastern Europe. I like it a lot and my son wants to make a similar one for my Pioneer PL-630 that he uses in his setup. He wants to change the looks a bit and it won't be as heavy. We'll see how it turns out. If he's able to make one and their machine has the capability to make something as large as a platter maybe I'll have him make one. Not holding my breath on that but stay tuned.

On another note has anyone ever played a 45 on the GT-2000? I recently purchased a high quality pressing of a new release single from a Rockabilly band I follow out of the Netherlands, Miss Maryann and the Rag Time Wranglers, and I was surprised how good it sounded. I don't have a record clamp that fits over the 45 adaptor though.

View attachment 1600903
View attachment 1600904

Reminds me I need to drag out my Skinny Puppy Bites and/or Remission. One or two of those sides is 45 rpm.

 

[Duffinator]

Thanks 808 and tuffgong, I was at the concert in my avatar! Amazing I found an image of that poster. Upper left hand side.

 

[jblnut]

You have a very fine display. Looks amazing. Props to the Clash. One of my all time favorites. Im going to check out miss maryann and the ragtime wranglers

Question to all on MC carts being used on their YSA-1.
any recommendations?
I had the Denon 103 it was not for me.
Anyone tried Shelter? Hana? Lyra etc?

I've used the following MC's on my GT2K:

AT33EV
AT ART9
Spectral MCR Signature (similar to the modern Lyras)
Supex SD900 IV
Ortofon Kontrapunkt h (mounted currently)

It seems to do well with just about any cart I have mounted on it. The only one that didn't really gel was an AT20sla (MM) which seemed too bright to me. That's probably more about the loading on the phono pre than anything else though.

I am really digging the Kontrapunkt these days. It's turning out to be everything I had hoped it would be. If you have any specific questions please let me know.

jblnut

 

[tuffgong]

I've used the following MC's on my GT2K:

AT33EV
AT ART9
Spectral MCR Signature (similar to the modern Lyras)
Supex SD900 IV
Ortofon Kontrapunkt h (mounted currently)

It seems to do well with just about any cart I have mounted on it. The only one that didn't really gel was an AT20sla (MM) which seemed too bright to me. That's probably more about the loading on the phono pre than anything else though.

I am really digging the Kontrapunkt these days. It's turning out to be everything I had hoped it would be. If you have any specific questions please let me know.

jblnut

Thanks for these recommendations.
One thing i forgot to mention is the m voltage.
My phono preamp is fixed so i need at least .5mv

 

[tuffgong]

Thanks 808 and tuffgong, I was at the concert in my avatar! Amazing I found an image of that poster. Upper left hand side.

View attachment 1601035

Thanks 808 and tuffgong, I was at the concert in my avatar! Amazing I found an image of that poster. Upper left hand side.

View attachment 1601035

That most of been a great show

Also saw that tour- ithaca collage 25 people in a cafeteria

After “Rock the Casbah” was released saw them in Toronto -outdoors 20k sold out

 

[Sound Dragon]

I've used the following MC's on my GT2K:

AT33EV
AT ART9
Spectral MCR Signature (similar to the modern Lyras)
Supex SD900 IV
Ortofon Kontrapunkt h (mounted currently)

It seems to do well with just about any cart I have mounted on it. The only one that didn't really gel was an AT20sla (MM) which seemed too bright to me. That's probably more about the loading on the phono pre than anything else though.

I am really digging the Kontrapunkt these days. It's turning out to be everything I had hoped it would be. If you have any specific questions please let me know.

jblnut

What made you move on from the ART 9?