RFI protection is a complex & little understood subject. "Pro" mikes differ hugely in their susceptibility. There are famous mikes from famous names which are terrible. The preamp input also needs to be RFI proofed.
Though I lust after a SD 788, Jim Brown says its input socket shells may not be connected to chassis. ".. I've seen it in connectors built into very good quality preamps and mics from a variety of manufacturers. So far the list includes Audio-Technica, Mackie, Neumann, Sound Devices and Tascam." Probably worth contacting Sound Devices if you own one as I'm sure they will have a cure or retrofit if they know of the problem. Pin_1_Revisited_Part_2.pdf from Syn-Aud-Con A long unbalanced cable is just asking for trouble. Len explicitly recommends AGAINST using the extension in bad RFI areas. A (possible) cheap cure worth trying on unbalanced lines is the clip on Ferrite sleeves often found on computer cables. http://jaycar.com.au/productView.asp?ID=LF1294&keywords=LF-1294&form=KEYWORD Even better if you can take a turn round the Ferrite. You need them at both ends as close to the connector as possible. Do let us know what you tried even if it doesn't work. Is it AM radio you are getting? PS The Pin 1 problem is RFI getting in on the shields. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
