intactaudio

Responses from intactaudio

Develop a hierarchy for phono playback
@dayglow  I was referring to XYZ alignment....  X and Y being azimuth and VTA/SRA and Z being Zenith.  These are all parameters where the actual tracing facets can substantially differ from the cantilever / coil orientation. @lewm  The viv is a... 
Develop a hierarchy for phono playback
@billstevenson  I think you left the most important factor off your list and that is cartridge alignment.  It may ruffle some feathers but a properly aligned $500 cartridge will sound better than a casually aligned $5000 cartridge.     dave  
Impedance Loading for SS Hyperion
@lewm  Simply working the inductance against the load impedance is too simplistic of an assessment for the use of a SUT in the case of MI (or other high L ) cartridges.  What becomes more important is the load capacitance reflected through the tr... 
Do vacuum tube test values reflect sound quality?
Tubes like the 12AX7, used by many companies as a cathode follower, are not a good choice. They do it because there are billions of 12AX7s in the world Many did it because the high µ was needed and the other half of the tube was right there wit... 
Fidelity Research FRT-4 and Entre ET-100 step-up transformer SUT comparison
Dear @scar972 : Even that you are satisfied with those SUT's both only degrades the cartridge signal no matters what. That argument can fairly be posed for any audio device which renders it moot.  dave  
Phono preamp or SUT for low output moving coil
If a "transimpedance" stage had an input of (say) 2 - 4 ohm, that would be a problem. The one thing that is always ignored in the whole transZ discussions is the DCR of the tonearm cable often approaches or exceeds 1Ω.  This DCR adds directly t... 
Step Up Transformers….Are they Worth the Trouble?
the Jico SAS is a namiki (orbray) Microridge.  The original SAS had a boron cantilever and was replaced by sapphire about 6 years ago when the supply of boron rod went away for just over a year so the switch to sapphite was purely logistical and t... 
Discuss The Viv Lab Rigid Arm
What if the issue is skating force? that seems to be the idea put forth by many of the UH arm designers.  I wonder conceptually how this idea could be tested. dave  
Discuss The Viv Lab Rigid Arm
Suggesting skating forces cannot change the cantilever angle vs. saying the changes will be minimal and not dominate an individual situation are two very different things.  One is a seemingly incorrect statement of fact and the other an opinion an... 
Discuss The Viv Lab Rigid Arm
against the stylus tip grooves ridding friction developed huge forces the skating seems to me can't change the measured tracking angle all over the LP surface . you are incorrect. both skating / anti-skate and groove modulation effect the cant... 
Discuss The Viv Lab Rigid Arm
Raul    The underhung just has not that "perfect "equilibrium Can you provide a list of underhung arms you have experimented with?   dave  
Discuss The Viv Lab Rigid Arm
I guess the questionable part is whether the bearings being aligned with an offset headshell is going to make the rest of the experiment invalid? My take on it is Just Do It....I  think the flaw here is without actually doing the test,  to assu... 
Discuss The Viv Lab Rigid Arm
  Hey Lew, Will you accept the possibility that due to geometry differences (overhung vs. underhung) different metrics may dominate the sonic behavior of each?  I experimented with this a bit last year and found that TAE dominates the overhung... 
Step Up Transformer with Moving Iron Cartridge?
the key with LOMI and SUT's is the LC resonance gets to be too close to the top of the audio band for my liking.   assuming 2.75mHy and a 150pF load the 1:10 will reflect back 15nF which will resonate with the 2.75mHy @ 25kHz.  The typical 47kΩ lo... 
Step Up Transformer with Moving Iron Cartridge?
In addition to what Lew said, The LOMI carts still have appreciable inductance and the step up ratio needs to be kept low (generally under 10) to avoid issues at the top end of the audio band.     dave