[Jukebox-list] Adding a tweeter to Tempo 1 (mono)

[Graeme Harvey]

Jay you are correct. I have sent Francois a Photo of one with the strap off 
list.
Graeme Harvey
----- Original Message ----- 
From: "Jay Hennigan" <jay at west.net>
To: "Jukebox mailing list" <jukebox-list at lists.netlojix.com>
Sent: Thursday, January 04, 2007 5:52 AM
Subject: Re: [Jukebox-list] Adding a tweeter to Tempo 1 (mono)


> Francois Villeneuve wrote:
>> Hello Graeme,
>>
>> I bought my NP/AC from Bill Bickers and I don't see any brass strap on 
>> the
>> pins.
>>
>> Is this strap on the all the pins or just one ?  How can I see if mine 
>> has
>> this strap ?
>
> It is on one pin only, if I recall correctly LG.  The strap is at the base 
> of the pin and angled to extend between the metal case and the molded 
> assembly holding the pins themselves.
>
> The strap creates an electrical connection between the case of the 
> cartridge and the ground pin.
>
> Here's the deal:  If the cartridge is mounted in a plastic or insulated 
> headshell, or attached with nylon screws and spacers, the strap should be 
> there as it ensures that the metal case of the cartridge is grounded via 
> the tonearm wire and doesn't act like an antenna for noise and the like.
>
> If the cartridge is mounded to a metal tonearm that is already connected 
> to ground, then the strap should be removed.  Otherwise, stray currents 
> can travel through the grounded tonearm, then the strap, and then the wire 
> to the amplifier RCA ground and cause a "ground loop", which induces hum 
> and noise.
>
> As your cartridge is in a grounded metal tonearm, not having the strap is 
> exactly what you want.
>
> --
> Jay Hennigan - CCIE #7880 - Network Engineering - jay at impulse.net
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