[RFI] Stellar Labs 100' Twisted Pair

[Jim Brown]

Dave,

I rarely disagree with anything you say, but I strongly disagree with 
this one.

Pro audio is my expertise, and LOTS of experience says that cable 
shielding is NOT important for RFI rejection on loudspeaker lines, but a 
decent quality TWISTED PAIR is VERY important.  Indeed, cables that have 
a foil/drain shield (a drain wire runs with the foil so you can solder 
it) are well known to CAUSE RFI.  See the pieces about SCIN on my website.

http://audiosystemsgroup.com/publish.htm

No disagreement about the ferrite choke, but I would use the twisted 
pair first, and add the choke only if RFI was still an issue.   With an 
infinite budget, certainly do both. :)

73, Jim K9YC

On 12/14/2010 6:10 AM, K1TTT wrote:
> It would be better if they had shielded cable.  I run shielded twisted pair
> cable for my tv surround sound system, and just for good measure wrap it
> around a ferrite core at the receiver end.
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://www.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>
>
>> -----Original Message-----
>> From: doc at kd4e.com [mailto:doc at kd4e.com]
>> Sent: Tuesday, December 14, 2010 14:00
>> To: RFI List
>> Subject: [RFI] Stellar Labs 100' Twisted Pair
>>
>> Would this be a good choice to avoid RFI?
>>
>> Unshielded twisted pair 12 AWG
>>
>> 4pk - 100' 1/4" to 1/4" Professional Speaker Cable
>>
>> <http://www.mcmelectronics.com/product/24-10577&scode=DD2103>
>>
>> Manufacturer: Stellar Labs Mfr. Part #: 24-10577
>>
>> $180. for four 100' cables w/connectors.
>>
>> --
>>
>> Merry CHRISTmas&  73, doc, KD4E
>> http://kd4e.com
>> Have an http://ultrafidian.com day
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