Shielding cable from turntable to amp.

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wallace

  • Jr. Member
  • Posts: 10
Shielding cable from turntable to amp.
« on: 29 Apr 2008, 01:15 pm »
Wots the CHEAP way to go about?

TheChairGuy

Re: Shielding cable from turntable to amp.
« Reply #1 on: 29 Apr 2008, 02:29 pm »
Should we assume your current IC leads are captive (soldered to your table) and you are looking for ways to shield them without the job of re-soldering a new lead to your table?

Tables with rca or 5 pin DIN terminations it's as easy as buying a shielded interconnect for them

If your lead is captive (as is the case with most Japanese tables), then Highwire All-Clears RFI Coils are a way to go....they are non-permanent, spiral shields that fit over interconnects and do a creditable job of shielding from RFI.  Only $25.00 and anyone can install in a minute.

http://www.powerwraps.com/

http://www.musicdirect.com/product/73717

John




Wayner

Re: Shielding cable from turntable to amp.
« Reply #2 on: 29 Apr 2008, 04:45 pm »
wallace,

Do you have hum now that you are trying to get rid of? May not be the cables.

Wayner

wallace

  • Jr. Member
  • Posts: 10
Re: Shielding cable from turntable to amp.
« Reply #3 on: 29 Apr 2008, 05:29 pm »
Yes, its slight hum (not RTF).
I have Dual 1209 and 1226 turntables. Neither have individulal tonearm grounding lines.

Ive read the Van den Hul facts section on grounding & wire placement etc. , to no avail.

(Its not the amp transformer cause Ive tried diff amps)

Wayner

Re: Shielding cable from turntable to amp.
« Reply #4 on: 29 Apr 2008, 05:58 pm »
Then it is probably induced motor hum (magnetic field) being picked up by the ultra fine guage cartridge wires and cartridge magnets (assuming you have a MM cartridge). New interconnects or shielding interconnects will not solve this problem. I suggest to try installing a ground wire from your turntable chassis to the preamp phono ground screw. If that doesn't work, try and find a part of the tone arm under neath the pivot (inside) that can also be tied to the chassis ground. To test the hum, simply shut off the table and see if the hum goes away. Power on..hum, power off...no hum. This will at least prove motor hum.

Wayner