> 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. :)
or if running the cables where you don't want to have to do it again you
still run shielded twisted pairs. The cable I used did not have foil/drain,
it had real braid shield which I brought out separately and grounded to the
receiver case separate from the audio lines.
David Robbins K1TTT
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> -----Original Message-----
> From: Jim Brown [mailto:firstname.lastname@example.org]
> Sent: Tuesday, December 14, 2010 16:41
> To: email@example.com
> Subject: Re: [RFI] Stellar Labs 100' Twisted Pair
> 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.
> 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
> > 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:firstname.lastname@example.org
> > web: http://www.k1ttt.net
> > AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
> >> -----Original Message-----
> >> From: email@example.com [mailto:firstname.lastname@example.org]
> >> 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.
> >> I don't google I SEARCH! http://ixquick.com
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