Page 2 of 2
Re: Are SSC interconnects screened?
Posted: Sun Apr 15, 2018 6:41 pm
by zebbo
Ok, I have now tried all the supplies and my findings are that:
While all the supplies work absolutely fine electrically and musically, two of them cause the speakers to buzz with SSC phono cables attached while the other two operate the speakers totally silently, (I'm listening to the top sections now with no buzzing at all).
Buzzing only occurs when a phono cable is attached. If no phono cable is attached the speakers are silent.
So two of the supplies seem to be causing interference with the unshielded SSC interconnects and two are not.
Applemarc used TIS interconnects are they shielded ? If so he would never have noticed.
Re: Are SSC interconnects screened?
Posted: Sun Apr 15, 2018 6:43 pm
by zebbo
No worries Marc. As far as I'm concerned I bought them so any issues are now my issues.
Re: Are SSC interconnects screened?
Posted: Sun Apr 15, 2018 6:48 pm
by Classicrock
Sounds like a bad connection on the amp cable terminals. I think NVA shielding itself is not connected and works on faraday cage principle. Have you another phono cable that can be tried which would isolate it to the amp if still buzzing?
Re: Are SSC interconnects screened?
Posted: Sun Apr 15, 2018 6:57 pm
by zebbo
With the two power supplies I'm using at the moment, (I can only use one section of the speakers at the moment as I only have one pair of cables), there is absolutely no buzzing at all so it's not a fault with the cables per se. If I were to run from the other two supplies the speakers buzz when the phonos are attached.
Re: Are SSC interconnects screened?
Posted: Sun Apr 15, 2018 7:23 pm
by Classicrock
So it is when the 2 offending power supplies are attached? If so the connectors on the power cables may have developed a fault when being dismantled / transported.
Re: Are SSC interconnects screened?
Posted: Sun Apr 15, 2018 8:43 pm
by zebbo
I don't think so because the amps/speakers work fine musically with any of the supplies but two of them cause the buzz, (stray EMF / RFI or whatever ?), which seems to be picked up by the interconnects.
Re: Are SSC interconnects screened?
Posted: Sat Apr 21, 2018 9:20 am
by zebbo
Well, cheapo shielded cables arrived and I hooked them up. Result? The buzz is reduced by, probably around 40 - 50% but still there.
If I make sure that the lower speaker, (with the driver inside the cabinet), is the one running from the buzzy PSU then it's barely audible but it's still strange.
Re: Are SSC interconnects screened?
Posted: Sat Apr 21, 2018 9:34 am
by Dr Bunsen Honeydew
I can build versions of SSC and SSP and TIS with the Faraday Cage configured as a screen. Existing ones can't be converted. PM me about bringing the one back that needs work.
Re: Are SSC interconnects screened?
Posted: Sat Apr 21, 2018 4:15 pm
by zebbo
Bloody earth loop. Disconnected the earths on the two PSU's and now all is silent.
Re: Are SSC interconnects screened?
Posted: Sat Apr 21, 2018 6:42 pm
by applemarc
Oh the joy's of our hobby