[Jukebox-list] "Clips"-was-Cartridge Installation on Rockola1438 ?

Ron Rich ronnnrich at yahoo.com
Fri Dec 29 08:11:20 PST 2006 

Britt,
  It's not difficult to do--however it is somewhat difficult to explain in writing. I will attempt it here, but would like to see other people attempt it also--
  You must strip the covering from the wire without damaging the shield. This is done by carefully cutting the covering back about 1/4 inch (if your first time, I suggest you go about 1/2 in) with a sharp knife (Exacto). Once the cover is removed, you must determine what the type of shielding used, will allow you to do. If it is possible to open the shield up  enough and slip the center wire, with it's protective coating out through the shield, you should do so. If it's not possible, you must cut away the shield wire the whole 1/4 (1/2) inch without ruining it (cut in a very straight line). After cutting it, or removing it, roll it up like string, and you can solder to it. Next, strip the covering off the center wire--cut the ends as needed to make it as short as possible.
  Use only "electronic solder" with a "low heat" soldering iron.
  Hope that helps,
  Ron Rich

wbabbott at cox.net wrote:
  Great replies Jay and Don... Sounds like someone could write a thesis on proper cartridge and cord replacement. I'm replacing the original mono cartridge with 4 prong stereo cartridge along with the replacement phono cord and new plug all of which came from Bill Bickers. The cord is thin and flexible, but looks like I'm going to have to perform micro surgery to get to the shielding and I'm wondering if the shielding will take solder?
Don, NO,.. I don't know how to prepare the cord for soldering. Please give me the step by step. Anyone else... please share your tips.... as I want to do it right the first time!
Thanks
Britt


---- Don Tutt wrote: 
> Hello Britt
> 
> Try your idea of wrapping the ground wire around the signal wire.
> Several difficulties might result.
> If the combination of wires is too heavy you might have tracking problems. 
> If too stiff you might have trip switch problems.
> Because wrapping a ground wire around the signal wire does not fully protect 
> the signal wire from electromagnetic fields, I would suspect you will notice 
> an increased hum .
> 
> Trouble in any of these areas might mean you should replace the wiring with 
> new sheilded wire that is light enough and provides easier ability to solder 
> to the sheath.
> 
> Do you understand how to properly prepare the end of a sheilded cable for 
> soldering to signal wire and to sheild...?
> 
> Good Luck,
> Don
> 
> 
> ----- Original Message ----- 
> From: 
> To: "Jukebox mailing list" 
> Cc: "Ron Rich" 
> Sent: Thursday, December 28, 2006 10:53 AM
> Subject: Re: [Jukebox-list] "Clips"-was-Cartridge Installation on 
> Rockola1438 ?
> 
> 
> > Got the clips today. Went to a local electronics store that had small bags 
> > of the gold colored pin clips. The shielded single wire cable I have for 
> > rewiring the cartridge has rubber around the shielding, so the shielding 
> > is hard to get to in order to use it as GROUND. Is it OK to use a separate 
> > wire from cartridge ground terminal to ground on the AMP?? I'll probably 
> > just coil the ground wire around the shielded cable all the way down into 
> > the phono plug.
> > Thanks,
> > Britt
> > ---- Ron Rich wrote:
> >> Clips (or socket pins) should be included with the new cartridge-- 
> >> Contact whomever you got it from--Ron Rich
> >>
> >> Don wrote: Re: CLIPS
> >> If no one has a better suggestion, you might look inside a discarded PC
> >> (computer) (as I did recently)
> >>
> >> There, you will find gold plated "clips". They are located inside the
> >> plastic plugs of the power wiring harnesses. There are different sizes of
> >> these "clips" to be found. Some might be just the right size.....
> >> If you cut away the plastic you could tease out a few of these "clips" 
> >> and
> >> see if they are the right size to make a good friction fit onto the cart
> >> pins.
> >>
> >> If so, just cut them off their wires and carefully solder them on to your
> >> cart wires. Maybe a little heat shrink needed too.
> >>
> >> For What Its Worth,
> >> Don
> >>
> >>
> >>
> >>
> >>
> >> ----- Or
> >> iginal Message ----- 
> >> From:
> >> To: "Jukebox mailing list"
> >> Cc: "Jay Hennigan"
> >> Sent: Wednesday, December 27, 2006 1:43 PM
> >> Subject: Re: [Jukebox-list] Cartridge Installation on Rockola 1438 ?
> >>
> >>
> >> > 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 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.
> >> >>
> >> >> --
> >> >> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
> >> >> Impulse Internet Service - http://www.impulse.net/
> >> >> Your local telephone and internet company - 805 884-6323 - WB6RDV
> >> >> _______________________________________________
> >> >> Jukebox-list mailing list
> >> >> Jukebox-list at lists.netlojix.com
> >> >> http://lists.netlojix.com/mailman/listinfo/jukebox-list
> >> >
> >> > _______________________________________________
> >> > Jukebox-list mailing list
> >> > Jukebox-list at lists.netlojix.com
> >> > http://lists.netlojix.com/mailman/listinfo/jukebox-list
> >>
> >> _______________________________________________
> >> Jukebox-list mailing list
> >> Jukebox-list at lists.netlojix.com
> >> http://lists.netlojix.com/mailman/listinfo/jukebox-list
> >>
> >>
> >> __________________________________________________
> >> Do You Yahoo!?
> >> Tired of spam? Yahoo! Mail has the best spam protection around
> >> http://mail.yahoo.com
> >> _______________________________________________
> >> Jukebox-list mailing list
> >> Jukebox-list at lists.netlojix.com
> >> http://lists.netlojix.com/mailman/listinfo/jukebox-list
> >
> > _______________________________________________
> > Jukebox-list mailing list
> > Jukebox-list at lists.netlojix.com
> > http://lists.netlojix.com/mailman/listinfo/jukebox-list 
> 
> _______________________________________________
> Jukebox-list mailing list
> Jukebox-list at lists.netlojix.com
> http://lists.netlojix.com/mailman/listinfo/jukebox-list

_______________________________________________
Jukebox-list mailing list
Jukebox-list at lists.netlojix.com
http://lists.netlojix.com/mailman/listinfo/jukebox-list


 __________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com

More information about the Jukebox-list mailing list