lewm

Responses from lewm

Source of Fremer's "1 arc second" claim?
All of the EMs at the National Institutes of Health are in the basements of the various buildings that house them. The one in our building was not further stabilized by any sort of air suspension. Yet it was stable enough to permit visualization o... 
Durable record vacuum cleaner recommendation?
What I do with the HW17, because I find that a distilled water rinse is worth the effort, is to wash with cleaning solution dispensed from the tank via the brush, scrub in both directions with brush, then vacuum, then rinse with distilled water fr... 
Vinyl playback - lack of bass?
If anything, I always thought that Rega's design philosophy, ultra light weight minimalist construction with emphasis on rigidity and structural strength, might possibly result in a slightly reticent bass response. No matter what is the cause, eve... 
Source of Fremer's "1 arc second" claim?
Yoyo, It seems you are insisting there must have been a difference that would be clearly evident to keen audiophile ears, when MF had to listen to the Wilson Benesch TT without the ThorLabs base.  How can you possibly know that unless you were at ... 
Fun with MM cartridge
11. Very hard to find a real one. I haven't hunted voraciously for one, but I do hunt other vintage cartridges in the usual places, and I cannot recall ever seeing one for sale.  
Turntable to Phono to Pre connections
"If my turntable only has SE outputs...."  Please clarify. Does your turntable have female RCA output jacks built into it? Or are you referring to the fact that you are using interconnects that have single-ended male RCA jack terminations? In eith... 
High Performance Moving Iron Cartridge Candidates?
Nagaoka, B&O, Grado. High output MI will generally work with MM stage and require 47K ohms input.  
Durable record vacuum cleaner recommendation?
 It is inevitable that the cork mat on the VPI HW17 will get a bit wet, but it's not a big deal, just incidental. You clean and vacuum one side at a time, so when you flip the LP to clean the other side, the side now facing the platter is dry.  Yo... 
Fun with MM cartridge
The Grado TLZ used to be my one and only cartridge for many years. The XTZ is an upgrade that I never have heard but by all accounts it is at least as good if not better.  I still have my TLZ, which must by now be nearly 40 years old. I've been me... 
Durable record vacuum cleaner recommendation?
Ditto on the HW17. I've had mine since the early 90s. No problems ever except periodically replacing the wand that does the suction and the brushes.  Both of which are sold by VPI at very reasonable prices. It's not quiet, but I have never underst... 
Fun with MM cartridge
Joenes, The Grado XTZ is a moving iron (MI) cartridge, not an MM, and it is a great cartridge. Your sample may have deteriorated during storage or may come back to greatness, if you run it for a while.  Use 47K ohms input Z.  It would not be expec... 
Hagerman Piccolo Zero: New transimpedance head amp
Once the current has been converted to voltage, the signal must be handled as voltage because all the downstream components are voltage driven. That’s why I suggested that the Piccolo Zero might be identical to the original Piccolo, after current ... 
Technics 1200G vs VPI Forever Model One
I concur that the Eclipse system, which I believe is the name of the package that gives you a SOTA motor, the drive amplifier, and the Roadrunner that feeds back to it, plus the required Hall sensor to give the RR something to read, is likely to b... 
Koetsu cartridges. They must be something special.
Jason, I just read the long piece on "pickups" in Wikipedia.  Seems there are a few different types and they operate in a few different ways, any set of which could affect the recorded signal in one way or another.  So I would guess it is about as... 
Hagerman Piccolo Zero: New transimpedance head amp
I did it but not with a Piccolo. I did it with a BMC MCCI and my aural results are to be found near the top of this thread. (1) where the cartridge has a very low internal resistance, it does make significant current output and is very good for dr...