intactaudio
Responses from intactaudio
| 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 | |
| Hagerman Piccolo Zero: New transimpedance head amp The thick wire that nets a low DCR also restricts movement so from the cartridge to the din connector is typically 12" of #36 or #37 which puts you at about 1/2Ω per foot. I have an early Schick and a Schröder and both are in the 1Ω range from p... | |
| Hagerman Piccolo Zero: New transimpedance head amp It should be noted that tonearm wiring DCR should be added to the internal cartridge impedance for your calculations. This can often be 1-2Ω which becomes substantial in relation to the super low impedance cartridges. dave | |
| Miracle by Joseph long on Dynavector XX2MKII cartridge I have had a few conversations with Joseph about the finer points of retipping and would not hesitate to recommend him. He is a genuine problem solver and the stories on his instagram page lay out his capabilities. dave https://www.instagram.co... | |
| Step Up transformer this is one of those ideas that works really well In the simulated world where an ideal 2:1 stepdown nets a 2X increase in output voltage. Real world reality of greater than 0 input Z of the current stage and DCR's of the windings makes the actu... |