Posted 13 May 2005 - 05:49 PM
The underlying EMI problem seems quite well-known (refer to AES48-2005 standard and do a google on the term "pin 1 problem").
We have not yet considered returning the mics and are currently looking for a fix. According to http://audiosystemsgroup.com/Pin_1_Revisited_Part_2.pdf Neutrik has EMC connectors that could resolve this problem. Unfortunately, I cannot seem to find these connectors on http://www.neutrik.com site.
Posted 15 October 2007 - 09:03 AM
Is there any solution to eliminate this HF noise
Posted 15 October 2007 - 03:45 PM
Also, make sure that the mic cable shield is connected directly to your input device's chassis (probably your mixer's chassis). At the mixer end of the mic cable, solder a thick wire to XLR pin 1 and route it outside the XLR connector, then attach it under a chassis screw. This might reduce RFI pickup by the mixer, but will not reduce RFI pickup inside the microphone.
You might also solder a jumper wire between pin 1 and the ground lug in the XLR connectors on both ends of the mic cable. Caution: This grounds the XLR shell, and might create a ground loop if the connector shell touches metal.
Posted 16 October 2007 - 01:31 AM
i've tried one of our hand mics on the audio line to the PZM-6D mic. If i use this mic there is no problem with any RF noise. I conclude that the RF noice comes over the PZM-&D mic. I'm not confident that a EMC XLR cabel fix the problem cause with another mic there is no RF noice.
What is your opinion?
Posted 16 October 2007 - 01:07 PM