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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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[quote user="Paul S"]Is there such a thing as partly unshielded arm wire? If you want that run shielded, don't you have to start at the cartridge connection? [/quote]Paul, the tonearm wire runs inside the metal armwands (EMT & SME), which in tur...
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N-set. do any of your interconnect shields "float"? If this is the case, I recommend bleeding them on the "upstream" end of each shield. This is another case where conductive mass = capacitance = noise. It does seem like this sort of noise would ...
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Over 10 year later, I finally "finished" and installed a shielded version of the above cable for the short run between my phono SUT and my phono stage, replacing the nondescript Placette cables I've been using there all this time. As anyone experien...
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Who knows why, but I can get away with running tiny, unshielded 6N POCC Cu arm wires straight into my step-up transformer. OTOH, I absolutely have to use shielded cable for the run between my step-up tranny and the K&K. For well-shielded phono ...
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Bud, you may have read some of my babblings about stacking ground planes and stray current attaching/backing up all over the place; it's a personal fetish. Not to mention the fact that getting the ground "stacked" correctly is almost impos...
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I have been adding and reconfiguring gear recently and I will be needing a 6' digital cable very soon, when I add batteriy power, so I just went ahead and bought one of the "Synopsis" remainders Romy mentioned.This $5 discontinued Belkin blue ca...
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I have not seen it mentioned but I might of missed it. The PurePower absolutely demands shielded interconnects especially between preamp and amp in my experience. No matter how careful I route the cables, I was getting noise or buzzing from the speak...
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Almost all such hum finds its way into your audio signal path through a ground loop, although it is technically possible for AC 50/60 cycle hum to enter from adjacent unshielded power cables. Make sure the AC cable to the phono is well shielded and i...
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In this cable thread there are some ideas about materials and construction of cables. My most recent attempt for good-sounding shielded phono cables are from Bud Purvine, using his specialty Litz wire construction, Vampire 800C connectors, and unblea...
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It would be nice to run a solid line from the cartridge to the SUT. I do this, but I do use connectors at the SUT; not because I think it's electrically "optimal" but because I don't want to crack the case on the unobtanium T3000, let alone glop...
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I'm wondering if anyone used the industrial standard 2RM-type of connectors for a DIY Lo MC phono connection?http://www.trimmer.ru/?target=61&nom=20251The smallest is 2RM14 with 4 pins, 1mm dia so pretty low mass--no big diameter jump along the p...
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N-set, before you wrap the signal wires with PTFE tape, I should mention that I have had some PTFE "tubing" on hand for quite a while, for "tubular" shield spacing, if I ever actually do it. I should also point out that most decent shielded IC has s...
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[quote user="Paul S"]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?[/quote]Of course not because of that! The ideal would be the connector I've shown but made with pure ...
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I have found the problem and was able to resolve the noise quandary.
The Lavry ADC has balance analog input and the Sansui has single-ended output. I use my PAD’s Dominus cable with an RCA to XLR adapter. The adaptor was made by BAT and I used it f...
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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?Probably, you will not use continuous wire from the cartridge coil, and you will probably not solder but use some sort of c...
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[quote user="Jack 14"]To sum up, it seems that if you want a stable VR tube, you should age it a few hundred hours and shield it against magnetic fields. Is it making any sense to you ?[/quote]Interesting, Jack. I have two old-school quite experience...
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N-set, I've never tried to make a "silver path". I have thought about Ag arm wire but I have not tried it. My cartridge coil and tonearm both use "high-purity" Cu wire, and the Cu arm wire feeds directly to the Ag wound SUT, which I use not because...
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If you can do it, try isolating both cases/chasses from your "ground plane(s)". Use one inclusive "ground plane" for both the PS and the gain/RIAA sections, and ground this "ground plane" to the house "neutral" wire. Do NOT connect any shielding to t...
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Not that I have a lot of patience for audio, but I finally ran out my allotment for the effing shielded phono cables when the clock sounded 12 before I figured out a quiet grounding scheme. On the up side, I cleaned and re-greased all the contacts f...
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I feel that shielding of dedicated power lines is kind of arguable
subject. First of it I do not know if it is necessary. What will you shield
from? The main point is what kind shielding
and how it affects sound. It might be shielding
that is i...
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Yes,
miso, I had exactly the very same experience. I did not experimented with high
voltage wires and my high voltage were a few premade power cords that I got
from different manufactures. Interesting that shielded cable BEFORE PP3000 aloe
impact...
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Adrian, can you confirm whether you were using cable with shielding or without? Like you I had the buzzing go away when on battery or without PP2000 in system. It became dead silent. Then with PP2000 back in system there was buzzing. I went to all sh...
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Sure, Josh, I have done this, and it does work, as far as it goes. I have for some time used ribbons over 8k, because I like them for top of HF. This one is the only HE, dipole, HF ribbon I have seen. Most efficient HF ribbons are "housed" by thei...
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[quote user="Paul S"]Anthony, it sounds like you have given a lot of thought to damping structural vibration. I was referring to the electro-magnetic fields thrown by transformers, and - based on my view of your perspective drawings - I was wonderi...
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[quote user="Serge"]Okay, I see your point, though I feel there is something wrong about magnets in the MC catridge's vicinity. I will have arguments later, probably.Now we can look at it differently. Remember direct drive? A motor sits right below t...
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[quote user="miab"]I have not seen it mentioned but I might of missed it. The PurePower absolutely demands shielded interconnects especially between preamp and amp in my experience. No matter how careful I route the cables, I was getting noise or buz...
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Is there such a thing as partly unshielded arm wire? If you want that run shielded, don't you have to start at the cartridge connection? Just asking...Best regards,Paul S...
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[quote user="Paul S"]Is there such a thing as partly unshielded arm wire? If you want that run shielded, don't you have to start at the cartridge connection? [/quote]Paul, the tonearm wire runs inside the metal armwands (EMT & SME), which in tur...
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Hello RomyI had a friend pick up the Expressive from the seller for me. I am a little disapointed in the physical apperance as there are a few scratches and the seller thinks I a crazy for saying so.I haven't tried it yet as my friend still has...
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No way to guess about grounding, at least until you show the final traces. I simply must use shielded inputs, and I bleed these "upstream" via a "dedicated" ground (and certainly NOT the "house ground"...). Yes, I realize this is not the desired "s...
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