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Decky

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Decky last won the day on June 2 2013

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  1. Neutrik PRO are using better materials as well - more copper than in standard brass versions. They are also more rugged and better suited for repeated connect/disconnect cycles. A very decent price for a pair: https://store.cliff.com.au/rca-plugs/211-neutrik-profi-rca-pair.html
  2. Man, I got suicidal after the first one, but the second one was so bizarre that I am still feeling lost and confused.
  3. Just read John Atkinson measurement of the Peachtree - not great: https://www.stereophile.com/content/peachtree-audio-nova300-integrated-amplifier-measurements "However, the high level of switching noise on its output and the less-good behavior of its S/PDIF inputs compared with its USB input raise my eyebrows a little.—John Atkinson
  4. It might be that one of the sides (transmit or receive) is not doing the muting of the SPDIF stream with no signal. Hard to say without schematics. An isolation pulse transformer, on the output or input connector, might help just to ensure that you are stopping some weird inductively coupled noise pickup, but might not be the ultimate solution. Have you tried a different cable just to cover the basics? It does not have to be 75ohm coax - just use any cable you have around. Also try BNC out from Alllo, just to make sure that you do not have a loose RCA connector problem.
  5. Can you give a bit better description of the equipment and cables involved
  6. Conductivity of the material itself is not the whole story - surface area and the contact quality govern the interface conductance and that is far more important. That is also why spades in general are inferior to good banana plugs. Also the reason why pure copper, due to corrosion, should not be used for terminating cables - regardless of the termination type
  7. But what about all those extra electrons in the signal path that are quantum-de-purifying the virgin audio signal? Also, extra 3.456ps delay in the signal propagation that is then folded and reflected on itself until it creates de-modulation effect at high frequencies? 🤨
  8. Slightly off topic but still cable related, more reinforcing the discussion on the level of differences people perceive with different cables and their real electrical/measurable/impedance differences. I had a recent troubles with my cartridge (posted in a different thread) and in the process of troubleshooting I measured impedance of all cables used in the signal path. Those were the only cables in the system I did not make myself - opting for the Blue-jeans LC-1 coax (triple shielded but with very decent capacitance spec). I have a 0.5m and a 2m pair. The short ones were fine on all three measurements (L,C and R). However, the long ones had one of them having resistance of 0.2ohm (normal) and the other around 10ohm (probably a bad termination). Capacitance + to GND was identical. There was no audible or measurable difference in signal passing through those cables. A similar example is a Van den Hul carbon first, which has a funny clamp type termination on the central carbon conductor. Its resistance is more like 20-30ohms - still no obvious impact on the sound, if anything that cable sounds very decent.
  9. Not so surely - it depends on your equipment grounding really. We are talking about SE interconnects not balanced ones. In fully balanced configurations - sure - no issues there. But when you start mixing a balanced cable configuration (i.e. shielded twisted pair) with a SE circuits funny things can happen.
  10. There are several misconceptions in your question. - Unshielded cables are more "open" than shielded ones. I don't know what that means but shield or no shield is not the cause or effect here - configuration of the cable, distance between conductors, wire gauge, insulation material - these are all variables that can make an effect on finished cable impedance characteristic and performance. Coaxial shield limits somewhat, the control a cable designer can have on these variables and therefore, generally, but not always, produces cables with high capacitance (>150pF/m). This in signal cable can cause a lower signal propagation speed and small HF roll-off. If you have a simple twisted pair unshielded cable, you can control the capacitance much better (to <20pF/m) and get less signal colouration. However, the effects are small, on well made cables. There is nothing wrong with using unshielded twisted pairs for standard audio signal levels. Not so much for phono signal levels. Then you can also try shielded twisted pair used as a SE interconnect where shield is floating or connected only on one end (so called - "directional" cables). I have never seen any real benefits of these configuration and they can cause more problems than solving them. - Shielding on power cables is useful for many reasons, but it is not a magic bullet against all interference fields. So, keep them away from the signal cables regardless if they are shielded or not. There is no effect of cable capacitance on AC wavefront propagation that I know of. A bit of reading material https://www.ranecommercial.com/legacy/note151.html
  11. https://www.swamp.net.au/recording/acoustic-treatment/bass-traps/
  12. What would Helmotz say if he figures that you are using his resonator...😑
  13. https://proscitech.com.au/products/triton-x-100
  14. I am waiting for one with a rectifier tube 😑
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