DIY phono interconnect attempt (echo problem)

Cable Asylum

Interconnects, speaker wire, power cords. Ask the Cable Guys.

After rewiring my turntable tonearm with Cardas wire I decided to go one step further and upgrade the phono interconnect cable.

The (Technics 1200) original factory phono cable was soldered to the circuit board on one end, and terminated with RCA connections on other end. It is a coax type cable "positive" wire in center with "negative" as the shield (but it's not a braided shield, rather densely wrapped in one direction), for each channel.

1. This is NOT a good solution, for high quality phono interconnect, is it not?

By the way I am using a MM Ortofon cart.

So here is my problematic attempt to make a DIY "improved" version:
I used a french braid of FOUR runs (per channel) of 28ga solid core copper wire with cotton wax insulation, 2 for positive two for negative. Without shielding they sounded fantastic but obviously hummed and therefore I made a second version with shielding.

I took some basic coax cable I had around, pulled the shield off and carefully slipped it over the above DIY cable braid. The shield was connected to ground at the turntable end ONLY. So here is the problem now: I am hearing an echo of EVERY sound coming through this shielded cable. Like it's a microphone feeding back.

2. Is this a capacitance issue or am I missing some big fault?

Would appreciate any advice and recommendation in this matter.
Thanks,
Herman

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Topic - DIY phono interconnect attempt (echo problem) - Gera 22:33:29 07/15/12 (5)

RE: DIY phono interconnect attempt (echo problem) - Duster 11:04:05 07/17/12 (2)

didn't help - Gera 00:10:28 07/22/12 (1)

RE: didn't help - Duster 08:55:56 07/23/12 (0)

RE: DIY phono interconnect attempt (echo problem) - barryb 06:22:39 07/17/12 (1)

not the problem... - Gera 00:13:41 07/22/12 (0)

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