#11
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Way Cool Stephen!
Great experiment and documentation. I am a solid believer of solid maple and these isolation pads!
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AKA J2Ordan McIntosh/Legacy/VPI/Bricasti/DIYCable |
#12
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John,
I've been playing around more with the VibSensor app, and noted that the Power spectrum is very informative. It returns a summary table of data, and also a plot. Summary table: Peak raw: X (0.78) Y (0.55) Z (15.45) ISD: X (0.05) Y (0.055) Z (0.32) Resonances: X: Y: 22 Hz (0.00037), 45 Hz (0.00025) Z: 44 Hz (0.0065) Shown here is the Power curve* from VibSensor of my Schiit Gumby DAC sitting on 1) in blue the stock Gumby feet and 2) in red on Herbie's Audio Lab Tenderfeet. You can the stock feet impart more total power into the DAC. *-The force is imparted by a home-made "slide hammer" I made with a bolt that is only partly threaded, a lock nut that serves as a stop, and a 1/2" drive socket. I drop the socket onto the rack from a set distance from the lock nut to control variance in the force imparted. It drops 8 centimeters from the locknut on the bolt onto the head of the bolt which is resting on the audio rack shelf.
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. Last edited by Puma Cat; 01-25-2020 at 02:11 PM. |
#13
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Quote:
Edit: I noticed that after having inserted them in my sound system last summer that the AC guys who installed my AC unit 3 years ago did install the same ones!
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Serge Last edited by Parabellum; 01-22-2020 at 10:51 PM. |
#14
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A possible replacement for those I am considering are the IsoAcoustics Orea.
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Serge |
#15
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Quote:
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. |
#16
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Quote:
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. |
#17
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Stephen-
interesting point about putting the pads under the component and not the feet. Now you got the gears turning in the old noggin. The ridged rubber pad on top and bottom makes them very solidly stackable. One can also use a 3 x 3 on the bottom with a 2 x 2 on top for full support.
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AKA J2Ordan McIntosh/Legacy/VPI/Bricasti/DIYCable Last edited by John Jordan; 01-23-2020 at 10:00 AM. Reason: proof read |
#18
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Quote:
Just as a side-note; I went to my SFAS meeting on Saturday (SF Audiophile Society) and we had Andrew Jones as our guest speaker. He was demonstrating the new ELAC Navis active speakers (which were REALLY impressive) and he was using the new ELAC Alchemy preamp/DAC/streamer. He was using four pair of the Diversitech AVPs with each pair stacked on top of each other, with the ribs oriented at 90° to each stacked pair. And they were placed directly under the component, not under its attached feet. And, as one of the best loudspeaker designers in the world, I would think Andrew would know a thing or so about managing vibration.
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. Last edited by Puma Cat; 01-23-2020 at 02:07 PM. |
#19
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Quote:
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Paul Speakers: Von Schweikert VR-5 Anniversary MK II Front L/R, LCR-35 Center, VR-1 Rear L/R Sub: JL Audio F113 Amps: PS Audio BHK Signature 300 Mono, McIntosh MC207 Pre-Amp PS Audio BHK Signature and Gold Note PH-10 Phono Stage/PSU-10 Power Supply Turntable: VPI HR-X 12.7 TONEARM (2) and SDS, Stillpoints LPI Tape Deck Otari 5050B II2 Music Server: Aurender N100H Cartridges: Ortofon Cadenza Black, Lyra Helikon Mono Digital Source: Oppo UDP-205 DAC: Holo Audio Spring 3 KTE SSP: Marantz AV8801 Cables: Wireworld Electra 7 (P) Wireworld Silver Eclipse 7, Shunyata Delta NR (I) Wireworld Silver Eclipse 7 (S) Wireworld Platinum Starlight 7 (USB) AC Power Regeneration: PS Audio DirectStream P15 Power Plant and Shunyata Denali 6000s V2. |
#20
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Just some more data....this is a plot in JMP14 showing the integration of the curve of the Power, RMS in the Z-dimension transmitted into my Schiit Gumby DAC. In red, the stock Gumby feet, and in blue, the cork & rubber anti-vibration pads. Both footers are resting on my Sanus Euro II audio rack top shelf (no maple board).
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. Last edited by Puma Cat; 01-23-2020 at 02:15 PM. |
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