KM184 RF Interferience at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > All Things Audio

All Things Audio
Everything Audio, from acquisition to postproduction.


Reply
 
Thread Tools Search this Thread
Old August 21st, 2009, 02:21 AM   #1
Regular Crew
 
Join Date: Jul 2009
Location: Yorba Linda, CA
Posts: 35
KM184 RF Interferience

I am getting RF interferience on my KM184. I purchased it used and I get quite a bit of RF interferience from it. Once for a few seconds every 5-10 min or so. It makes it unuseable because I loose takes and shots that cant be done again. I need my cabled mics to never have this problem. I read somewhere on another forum that the older KM184's had this problem but offered no solution.

Is there something I can do to fix this? Get it repaired? Ive never had this problem with a cabled mic before.
Dan Lukehart is offline   Reply With Quote
Old August 21st, 2009, 02:25 AM   #2
Regular Crew
 
Join Date: Jul 2009
Location: Yorba Linda, CA
Posts: 35
maybe this?

Shure - A15RF In-Line RF Interference Attenuator



the sound i am getting is similar to when your cell phone is about to go off next to your clock radio. its a soft beeping type sound. I have assumed this is RF though I dont know much about it.
Dan Lukehart is offline   Reply With Quote
Old August 21st, 2009, 03:08 AM   #3
Regular Crew
 
Join Date: Jul 2009
Location: Yorba Linda, CA
Posts: 35
I found an example and uploaded a 18 second clip:

YouTube - Audio Problem KM184
Dan Lukehart is offline   Reply With Quote
Old August 21st, 2009, 04:39 AM   #4
Major Player
 
Join Date: Oct 2008
Location: Oxfordshire, UK
Posts: 974
Explain the problem to Sennheiser / Neumann USA, it may need looking at.

Check your cables - many RF problems can be cables or mixer.

Change the cable XLRs to the Neutrik EMC XLRs (this is what I am doing now to all my cables). The EMC XLR has a ferrite bead on pin-1, a ring capacitor that connects pin-1 to the shell and a toothed ring round the female for good connection.

The Canford Audio XLR In-Line RF Filter is excellent and I always carry a few with me. Used at the miser end (rather than at the mic. end like the Shure one).

Also - consider changing the mic. cable to star-quad (I use this type for all my mic. cables).

I hope this helps.
__________________
John Willett - Sound-Link ProAudio and Circle Sound Services
President: Fédération Internationale des Chasseurs de Sons
John Willett is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > All Things Audio

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 12:27 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network