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@arrl.net
> web: http://www.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>
>
>> -----Original Message-----
>> From: doc@kd4e.com [mailto:doc@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
>> Defend free speech or lose your freedom.
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