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In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage
Post Subject: More on thatPosted by N-set on: 4/2/2013
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 Paul S wrote:
But why would you consider brass connectors because of 95% of boutique RCA if the idea is to wind up with the best signal path?


Of course not because of that! The ideal would be the connector I've shown but made with pure silver/teflon,
but to my knowledge nothing like that exists (I've checked Lemo, Camac, etc).
I vaguely remember reading few years ago somewhere that Russians had connectors of the bayonet type with solid
silver pins, use in their SS rockets, but all my attempts to verify that failed.
I would tolerate brass and/or bronze (the female part of the shown russian connector is silver-over-phosphor bronze)
in the shown connector geometry due to it's relatively low volume compared to the boutique RCA's.

 Paul S wrote:
Since shielding seems like a bad idea for arm wire, how far can you go from the cartridge with no shield or connector?  Where is the SUT in relation to the cartridge?  Where is the SUT in relation to the RIAA, etc? 


I have not tried the unshielded wire in my current location nor I have a chance to do it right now.
SUT is in the same box as the RIAA, about 1m from the cart.

 Paul S wrote:
At what point do you transition to shielded cable, and how does this happen?


Current situation:
EMT arm: DIY double shielded cable, shield starts at the tonearm base and goes all the length of the cable. Both shields are
connected to the RIAA housing.
3012R: some stock SME shielded cable plugged to the arm RCA base, shield grounded at the RIAA side.

Planned on 3012R: a continous run from the cart socket in the armwand to the entrance of the RIAA/SUT, terminated with some quality connection.
I want the flexibility of detaching the arm from the RIAA/SUT so no, I will not solder the wire directly to the SUT.

 Paul S wrote:
Will the better conduction and "surround shielding" of "premium", low-mass RCA connectors trump the still lower mass of tiny brass connectors?


This is something I'd love to know, Paul! In other words what is less sonically obstructive:a superb material but in a shitty geometry or a shitty material but in a right geometry? Let me invoke this skin effect, which I hve no idea how it affects the sonics, but physically the current density decreases
by the relative ratio of the depth to a characteristic, freq. dependent skin depth delta(f). So the thinner the conductor, keeping the Ag plating thickness the same, the smaller the absolute volume of the shitty material the signal will travel through...how it affects sonics no idea.
I'm trying to locate the connectors I've mentioned from the old miliitary USSR stock, hoping they used a thicker silve plating the modern Chinese analogs do...or perhaps I could extract the pins and Ag plate them the 2nd time.


Cheers,
N-set


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