[Jukebox-list] Cartridge Installation on Rockola 1438 ?

[wbabbott at cox.net]

Jay, thanks for reply. Yes the new, replacement stereo cartridge I have has the four prongs as you describe. When you say use "clips" instead of soldering direct to these prongs, what make/type of clips are you talking about? Where do I get these clips? Also, the replacement shielded cable I got is rubber coated over the shield which is over the rubber coated center core lead. How can I get this shield grounded or is there another way, like using a separate ground wire? Or, where can I get maybe a two ply shielded wire, ie center core input and separate unshielded ground?
---- Jay Hennigan <jay at west.net> wrote: 
> wbabbott at cox.net wrote:
> > I've received a new stereo cartridge for my Rockola 1438 along with a new replacement shielded phono cable to rewire the cartridge with as my original is looking very ratty. It appears that the original cartridge is in place, but has been slightly "re-wired" in past. There are two terminals on the original cartridge which I believe is 1.needle output and 2. ground. The output terminal has the core of the phono cable soldered to it .The ground terminal has a wire lead which appears to be soldered to the phono cable outside shielding?? It would seem to me that the ground would be grounded somewhere other than the metal shielding on the cable??
> > 
> > Before I install and rewire new stereo cartridge, I want to be sure how to properly wire and ground the cartridge. Please give me some instruction here...!
> 
> That is correct wiring for a monaural cartridge.  For stereo, the 
> conventional way is to wire the shield to both (-) terminals and the 
> center conductor to both (+) terminals.  The cartridge may have molded 
> letters like LG, RG, L, R, which are abbreviations for Left Ground, 
> Right Ground, Left, Right.  There may be a small brass clip between one 
> of the ground terminals and the cartridge case.  Depending on the wiring 
> of everything else, leaving this connected may result in hum.  It can be 
> removed by prying it off with the connector removed.
> 
> Don't solder directly to the cartridge pins, use clips.
> 
> In some cases, you'll get better performance by wiring the stereo 
> cartridge in series.  This gives a higher voltage output which can be 
> helpful as the older cartridges often had higher output than the 
> replacements.  This is done by connecting the shield to LG, connecting L 
> and RG together, and the center conductor to R.
> 
> --
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