terry9

Responses from terry9

Which is more accurate: digital or vinyl?
Orpheus10, I don't think that a 'scope is the best way to investigate this.I can clearly hear differences between waveforms that look identical on a scope, such as small differences in IM distortion. The resolution is simply not there. That may be... 
Isolation Transformers--Richard Gray or Torus?
Hello Chart.116 VAC in, 121-2 VAC out, both transformers, no load. Same model number. 
Isolation Transformers--Richard Gray or Torus?
Hello Ja.I use Plitron toroidal 2KVA. I don't see them listed on their website, but they are very accommodating people. Maybe they have upgraded them further.Good luck! 
Nottingham tonearms compared to other brands?
Hello Inna.NAS still sells the Tracer 1, I think, but they stopped selling the Tracer 4 many years ago. Tom Fletcher told me that the stylus cost more to build than they could charge for the whole cartridge. Added to the silver coils, it was far t... 
Nottingham tonearms compared to other brands?
I am using a Transfi Terminator air bearing on a late model Mentor. The improvement over the Mentor Arm is notable. Cartridge is a mm NAS Tracer 4 (sic). 
Experience w/ Trans-Fi Auio Terminator Tone Arm?
Highly recommended.I received my Terminator Arm with Tomahawk wand in December 2011. It replaced a Nottingham Analogue Mentor arm on a late model Nottingham Analogue Mentor turntable.Improved clarity and soundstage was immediate. Extended listenin... 
Which is more accurate: digital or vinyl?
Hello Al.Thank you for your expert and thoughtful response. I find myself agreeing with your premises while disagreeing with your conclusions.I agree with your aside concerning filtering, but, would you not agree that every capacitor introduces di... 
Which is more accurate: digital or vinyl?
Hello Al.Thanks for the note, but I find the arguments unconvincing. While it is easy to speak of step functions being "smoothed out", it is imprecise. To make the statement precise, the smoothed function must be measured from real devices rather ... 
Which is more accurate: digital or vinyl?
Hello Almarg.Reciprocating your respect, truly, I wouldn't expect you to have encountered it before.I bought a UNIX box in 1999 to do simulation research with Maple (the pro math package). Then I found that, sadly, the journals don't like results ... 
Psvane Teflon capacitors real or fakes?
Magfan, I think the arthritic feeling comes from CaF2 precipitating in the calcium channels of the neurons. What is left over of the HF trades up the activity chart until it bonds into an insoluable compound, as found in the bones. As you say.All ... 
Which is more accurate: digital or vinyl?
Analogue. Do the mathematics:By the Fourier Theorem, we must only consider sine waves. A sine wave must be sampled 250 times to achieve 5% RMS distortion or less (the bear is when they cross zero, if I remember my simulations correctly). Undamaged... 
What's your profession? Age?
Retired, 67. Last posting was research biostatistician. System worth $50,000 plus the electronics, which are home brew.Beg to differ, Southern. My hearing is down 6 dB at 12KHz, and I can clearly differentiate VCap and RelCap teflons, and brands o... 
Psvane Teflon capacitors real or fakes?
Of course you are correct, Rodman. No component.But what if you are servicing something with a teflon-insulated wire connected to a lug, insulated right to the joint? And if the factory used high temperature solder? Then the teflon might get hot, ... 
Psvane Teflon capacitors real or fakes?
A note of caution from an old fogie.270 C and teflon do not mix well. As I understand it, teflon begins to decompose and form HF, a very bad chemical. HF symptoms can develop over 24-48 hours, which makes it particularly insidious. In my experienc... 
Quad ESL Cap mods
My first Quad Mod was along the lines you suggest, Tsushima1. I simply removed the existing lines from the WBT connectors and insulated the ends. Then I routed new lines (15 AWG silver coated copper) from the connectors to the downstream side of t...