HumanMedia;687295 Wrote: > So this is your suggestion? > Just bitter unhelpful sarcasm? > > You hadn't even read the OP where he, like me, already uses a wireless > bridge to connect to the Squeezbox. A bridge that is designed to > radiate RF and an ethernet cable connecting it to the Squeezebox. And > the cable in high likelihood is picking up a huge amount of this RF. > Whether or not this has an effect on final sound is yet to be > determined. And what easier way to determine this (in the absence of > vastly more expensive measuring equipment) is by trying a $12 shielded > ethernet cable tied to ground at the wireless router end, or an even > cheaper generic unshielded cable - so why not try it out? > > And if it makes a difference then thats a pretty good way of > determining if it actually was a problem in the first place. If not > then it has verified that it wasn't a problem - a position that one > wouldn't be in unless one had actually tried it.
If it's any help, I've put an RFI sniffer near to the 3 metre cat 5 UTP cable between my router and Touch and it detects absolutely no RFI coming from the cable. So I don't think the cable is radiating anything through the air. If your router is anything like the ones I have here, it won't have a true ground plane that is earthed. Also, the RJ45 jacks are galvanically isolated - there is no DC path between router and Touch. The twisted pair construction of the cable should prevent most BUT NOT ALL RFI from elsewhere being picked up by the cable. What certainly is possible is that HF noise generated within the router - including noise from the router PSU - can travel down the ethernet cable (alongside/intermingled with the actual network signals), pass through the isolating transformers and get "inside" the Touch. How far into the Touch circuitry this noise can penetrate is unclear to me - one would hope that the NIC is well isolated from the audio circuits... It should be possible to construct a circuit that blocks HF along the ethernet but passes the networking signals intact... -- Phil Leigh You want to see the signal path BEFORE it gets onto a CD/vinyl...it ain't what you'd call minimal... Touch(wired/W7)+Teddy Pardo PSU - Audiolense 3.3/2.0+INGUZ DRC - MF M1 DAC - Linn 5103 - full Aktiv 5.1 system (6x LK140's, ESPEK/TRIKAN/KATAN/SEIZMIK 10.5), Pekin Tuner, Townsend Supertweeters,VdH Toslink,Kimber 8TC Speaker & Chord Signature Plus Interconnect cables Stax4070+SRM7/II phones Kitchen Boom, Outdoors: SB Radio, Harmony One remote for everything. ------------------------------------------------------------------------ Phil Leigh's Profile: http://forums.slimdevices.com/member.php?userid=85 View this thread: http://forums.slimdevices.com/showthread.php?t=93316 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
