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With nothing better to do today, I decided to do this new grounding scheme ...... However, the hum I hear at full volume is from the cd player, not the amp.
We couldn't find Riken Ohm in Australia.We bought from Parts Connection. They also do Black Gates. They are fast, cheap and reliable.
PS: the theory above on picking the 0V point to ground also applies to working out which end of a shielded cable's shield to ground when you only want one end connected to avoid ground loops - always connect it at the "quietest/least noisy" end which invariably is the end with the smallest currents flowing through or passed it. Cheers, Ginger ...
Andy, ....#1. In general, an Interconnect with a shield will have the shield connected to the rca connector at only one end.#2. But, with the rca grounded in the amp, the IC could be connected "backward" with the rfi and noise, if there is any, being grounded right there in the amp. Although, that would tend to negate the shield.#3. I use braided IC's to cancel any noise. Also, have grounded the rca to a chassis bolt after reading Ginger's post....