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  #1  
Old 13th January 2012, 05:37 PM
Carosio Carosio is offline
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Default What's this pick-up cable?

I recently purchased an RB 300 tone arm which was fitted with this unusually thin arm-to-amplifier lead. Apparently, the arm was sent away to a specialist to be re-wired, but can't get further information due to the previous owner now being deceased. He also owned high-end decks so I would think he would have been discerning enough to have chosen a reputable specialist to do the job. I would appreciate it if anyone can recognize this type of cable.

http://i665.photobucket.com/albums/v...io/PUcable.jpg
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  #2  
Old 14th January 2012, 10:24 AM
Richard Richard is offline
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Default Re: What's this pick-up cable?

Hi,

Impossible to say from the pic could be anything. Perhaps unscrew a phono plug and have a look at the end see if it's silver, copper etc and if the dielectric is ptfe, pvc etc. Then check capacitance. Even then it's only personal preference as to whether you like it though so I wouldn't worry too much.

What is more important is that the arm seems to have been rewired so it has a separate earth lead and not earthed via one of the phono braids as is standard and caused noise.
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  #3  
Old 14th January 2012, 10:51 AM
colin.hepburn colin.hepburn is offline
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Default Re: What's this pick-up cable?

Have a double check for any numbers or lettering along the cables length as this can be difficult to see due to fading or sometimes any letting can just be stamped or moulded in to the ptfe, pvc etc which can be mised due to being in this case white
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Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s
Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2


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  #4  
Old 14th January 2012, 09:38 PM
Carosio Carosio is offline
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Default Re: What's this pick-up cable?

Thanks, I've been working this weekend but will have a further look on Sunday night, I have a capacitance meter so will check value.
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  #5  
Old 14th January 2012, 10:09 PM
A Stuart A Stuart is offline
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Default Re: What's this pick-up cable?

Quote:
Originally Posted by Carosio View Post
I have a capacitance meter so will check value.
Can I take it for granted that you plan to unplug the cartridge first ?

Having burnt out the coils on one when I omitted to resolder one earth lead inside my phono amp, this is a sensitive point of mine.

Alastair
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  #6  
Old 15th January 2012, 07:39 PM
Carosio Carosio is offline
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Default Re: What's this pick-up cable?

At the moment, there is no cartridge fitted.

The capacitance through to the cart. tags is about 156pf. It does look as though it is silver (solid core) cable, also the braid appears silver, there is no marks visible on the outside. The standard of soldering is surprisingly poor, but could have been the previous owner, although I can't see why he would want to alter anything after having the arm re-wired.

http://i665.photobucket.com/albums/v...osio/wire1.jpg

http://i665.photobucket.com/albums/v...osio/plug1.jpg
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  #7  
Old 15th January 2012, 11:05 PM
Richard Richard is offline
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Default Re: What's this pick-up cable?

Yuk, maybe he just changed the phono plugs.

You'll want to remake them so try the plastic with the tip of the iron to see if it melts; pvc or polythene, or not; ptfe. The capacitance is fine.

I have rewired an RB300 but can't remember how it fixes at the arm end. I would check how good it is though if I were you.
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  #8  
Old 15th January 2012, 11:55 PM
colin.hepburn colin.hepburn is offline
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Default Re: What's this pick-up cable?

Have a look at Mike H rewire may help as a guide near bottom of page
http://livinginthepast-audioweb.co.uk/thorens160.php and if you would like someone to do it for you i can recommend this chap I got my rega RB250 rewire and Foam Fill from him http://www.audioorigami.co.uk/AO_Rewires/AORewires.htm

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Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s
Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2


If you have trouble reading my posts its because I am a dyslexic member
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  #9  
Old 16th January 2012, 04:33 PM
audiopete audiopete is offline
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Default Re: What's this pick-up cable?

+1 for audioorigami.

When I had vinyl setup, sent my rega rb250 for modding. Excellent investment IMO.
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  #10  
Old 18th January 2012, 05:20 PM
KC Jones KC Jones is offline
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Default Re: What's this pick-up cable?

Another plus for an AO rewire, I had my RB250 rewired by J7 too. Bob Orbell would agree, that soldering does look a bit like my standard! but I did not do that one. However the phono plugs do look exactly the same as maplins stock.
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