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Old 01-29-2018, 02:26 PM
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Default Replacing the "thrust disc" on Avenger Reference TT

I purchased a VPI Avenger one year ago and had stumbled across this on the MusicDirect. I recall seeing similar language elsewhere, perhaps the VPI website.

"VPI's Latest Breakthrough: The Magnetic Drive System
VPI's magnetic drive system is unique to Avenger Reference. The drive platter is mounted to the 5/8" center shaft, which goes through both platters and deep into the bottom of the bearing assembly. The bottom bearing is an oil bath, and the PEEK thrust disc on the bottom bearing takes the full 30 pounds total of both platters. Hence, the thrust disc is replaceable and should be changed every year so constantly get the sound of a new 'table. The top platter, or slave platter, rests in a PTFE Super Lube inverted bearing with almost zero rotational motion so that there is no wear on the thrust disc. Powerful magnets from the drive platter grab the magnets in the slave platter and send it rotating noiselessly with a beautifully damped motion. Wow and flutter levels are exceptionally low. The Lyra Atlas cartridge, which touts very powerful Alnico magnets, has no reaction at all to the platter magnets. Neither does the Ortofon A95, Shure Ultra 500, Soundsmith Hyperion, or any other top cartridge VPI has tried." (emphasis added) https://www.musicdirect.com/turntabl...ence-turntable

I called VPI last week and the gentleman who answered the phone had no idea what I was talking about. He put me on hold and consulted with his colleagues, then told me this was a special order and they did not think this was necessary. However, the above verbiage is almost certainly direct from VPI. So now I have no idea if this is really accurate. My conversation with the guy from VPI would indicate this is not necessary, but again he seemed to have no idea what I was talking about. Not sure if anyone else has some insight on this issue
Thanks in advance.
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Tim
Amplifiers: McIntosh 1.2 Kw
Preamp: Esoteric C03
Speakers: Salon2 with F113v2 x 2
Analog: VPI Avenger Reference with Ortofon A95 and Esoteric E03 phonostage
Digital: Silenzio and Esoteric K03-x and G02
Power Management: PS Audio P10 x 2, P5
Cables: WW PE7 SC & IC, Furutech Flux-50 Filters
Rack: HRS SXR Signature
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  #2  
Old 01-29-2018, 02:51 PM
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What's the manual say?

Best Sir,

Bob
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Amps:VAC 450iQ Monos in Silver Flake on HRS M3X2-1921's, HRS G7 Footers/G-Links & Sound Anchor Conecoasters.
Preamp:VAC Master Preamplifier (Silver Flake)
Digital Source: dCS Rossini CD/SACD Transport, Vivaldi APEX DAC, Upsampler Plus & matching Clock (Silver)
Analogue Preamp:VAC Renaissance SE Phono stage in Silver Flake with XLR Output Option & with Nordost Valhalla XLR's.
Analogue Sources:SME 20/2 w/SME V arm & Nordost Valhalla TA cable, Palo Santos Presentation Cartridge & Akai GX-400D Reel-to-Reel w/relapped heads by JRF Magnetic Sciences. Akai RC-17 cabled remote (original owner since 1974).
Vibration Control:TT on HRS M3X2-1921 shelf.
Speakers:Wilson Audio Alexia in Argento Silver/Black grills sitting on Acoustic Diode Kit.
Power Cables:4 Nordost Odin Supreme Reference on amps, preamp & DAC. Ansuz Acoustics C2 on Transport & Clock.
Power Distribution Bar:Shunyata Everest 8000 w/Omega XC Power Cable.
Power Outlets:Furutech GTX-D NCF (R) duplex outlet, GTX Wall Plate & Duplex Cover (x2) on dedicated, same panel phase, 20A breakers.
Speaker Cables:3M Nordost Odin Supreme Reference on Nordost Sort Lifts.
Signal Cables:Nordost Odin XLR's on dCS DAC & Amps.
Digital Cables: Nordost Odin 2's, 110 ohm AES/EBU on dCS Transport to DAC.
Clock Cables:5 each 75 ohm 1.25M Nordost Valhalla BNC/BNC Digital
Ethernet Cable: WireWorld Platinum 1M Starlight® 8 Twinax
Headphones:Vintage Koss Pro IV AA.
RCM: Audio Desk PRO
Tube Test Gear:Mint late '60's/calibrated Heathkit TT-1A, MaxiMatcher Preamp & Space Tech Labs ATT-3.02 tube test sets.
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Old 01-29-2018, 03:06 PM
dolsey01 dolsey01 is offline
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I'd post this question on the VPI Forum. Harry is back from vacation and I'm sure can answer as well as Brent (BRF)
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Old 01-29-2018, 03:07 PM
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Quote:
Originally Posted by vintage_tube View Post
What's the manual say?

Best Sir,

Bob
Nothing at all in this regard. So, probably an error, or they changed their minds regarding the necessity of this.
__________________
Tim
Amplifiers: McIntosh 1.2 Kw
Preamp: Esoteric C03
Speakers: Salon2 with F113v2 x 2
Analog: VPI Avenger Reference with Ortofon A95 and Esoteric E03 phonostage
Digital: Silenzio and Esoteric K03-x and G02
Power Management: PS Audio P10 x 2, P5
Cables: WW PE7 SC & IC, Furutech Flux-50 Filters
Rack: HRS SXR Signature
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  #5  
Old 01-29-2018, 06:18 PM
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Quote:
Originally Posted by mtroo View Post
So, probably an error, or they changed their minds regarding the necessity of this.
Tim - That thought occurred to me too. If VPI was quizzical about your question, I'd consider it a mute point & march on. They'd know.

Best Sir,

Bob
__________________
Amps:VAC 450iQ Monos in Silver Flake on HRS M3X2-1921's, HRS G7 Footers/G-Links & Sound Anchor Conecoasters.
Preamp:VAC Master Preamplifier (Silver Flake)
Digital Source: dCS Rossini CD/SACD Transport, Vivaldi APEX DAC, Upsampler Plus & matching Clock (Silver)
Analogue Preamp:VAC Renaissance SE Phono stage in Silver Flake with XLR Output Option & with Nordost Valhalla XLR's.
Analogue Sources:SME 20/2 w/SME V arm & Nordost Valhalla TA cable, Palo Santos Presentation Cartridge & Akai GX-400D Reel-to-Reel w/relapped heads by JRF Magnetic Sciences. Akai RC-17 cabled remote (original owner since 1974).
Vibration Control:TT on HRS M3X2-1921 shelf.
Speakers:Wilson Audio Alexia in Argento Silver/Black grills sitting on Acoustic Diode Kit.
Power Cables:4 Nordost Odin Supreme Reference on amps, preamp & DAC. Ansuz Acoustics C2 on Transport & Clock.
Power Distribution Bar:Shunyata Everest 8000 w/Omega XC Power Cable.
Power Outlets:Furutech GTX-D NCF (R) duplex outlet, GTX Wall Plate & Duplex Cover (x2) on dedicated, same panel phase, 20A breakers.
Speaker Cables:3M Nordost Odin Supreme Reference on Nordost Sort Lifts.
Signal Cables:Nordost Odin XLR's on dCS DAC & Amps.
Digital Cables: Nordost Odin 2's, 110 ohm AES/EBU on dCS Transport to DAC.
Clock Cables:5 each 75 ohm 1.25M Nordost Valhalla BNC/BNC Digital
Ethernet Cable: WireWorld Platinum 1M Starlight® 8 Twinax
Headphones:Vintage Koss Pro IV AA.
RCM: Audio Desk PRO
Tube Test Gear:Mint late '60's/calibrated Heathkit TT-1A, MaxiMatcher Preamp & Space Tech Labs ATT-3.02 tube test sets.

Last edited by vintage_tube; 01-29-2018 at 06:26 PM.
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  #6  
Old 01-29-2018, 07:44 PM
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mtroo mtroo is offline
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Thanks Bob
March I will
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Tim
Amplifiers: McIntosh 1.2 Kw
Preamp: Esoteric C03
Speakers: Salon2 with F113v2 x 2
Analog: VPI Avenger Reference with Ortofon A95 and Esoteric E03 phonostage
Digital: Silenzio and Esoteric K03-x and G02
Power Management: PS Audio P10 x 2, P5
Cables: WW PE7 SC & IC, Furutech Flux-50 Filters
Rack: HRS SXR Signature
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  #7  
Old 01-30-2018, 01:48 PM
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vego99 vego99 is offline
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Tim,

Below is a thread from the VPI form where Veteran Poster BRF did his annual maintence to his HRX with the MAGDrive / Rim Drive platter which included replacing the thrust disc.

http://vpiforum.com/viewtopic.php?f=12&t=9686

Last edited by vego99; 01-30-2018 at 01:52 PM.
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Old 01-30-2018, 02:28 PM
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mtroo mtroo is offline
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Quote:
Originally Posted by vego99 View Post
Tim,

Below is a thread from the VPI form where Veteran Poster BRF did his annual maintence to his HRX with the MAGDrive / Rim Drive platter which included replacing the thrust disc.

http://vpiforum.com/viewtopic.php?f=12&t=9686
Thank you. I will read it through tonight.
__________________
Tim
Amplifiers: McIntosh 1.2 Kw
Preamp: Esoteric C03
Speakers: Salon2 with F113v2 x 2
Analog: VPI Avenger Reference with Ortofon A95 and Esoteric E03 phonostage
Digital: Silenzio and Esoteric K03-x and G02
Power Management: PS Audio P10 x 2, P5
Cables: WW PE7 SC & IC, Furutech Flux-50 Filters
Rack: HRS SXR Signature
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  #9  
Old 01-30-2018, 07:19 PM
slowGEEZR slowGEEZR is offline
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Just a thought, but can't you just look at it and see if there is any wear? Reason I ask, is that I went through some teething issues with my table's thrust plate and eventually had some made from a tougher material. I had to examine my table's thrust plate often, until I found the solution. Good luck.
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  #10  
Old 03-18-2018, 12:45 PM
gadawg gadawg is offline
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I had seen a post on Audiogon where Matt posted that the bearing was expected to last 5-10 years in normal use.

George
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