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Author Topic: Quality Wireless Guitar  (Read 999 times)

Mike Caldwell

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Re: Quality Wireless Guitar
« Reply #20 on: February 06, 2020, 10:54:43 pm »

Do you think a ferrite clamp would solve the problem with noise that I have with Crown CM-311 mics and Shure ULXD packs?

Speaking of ferrite clamps and core in general taking care of RFI problems.....
Just a couple weeks ago I took care of some very impressive RFI on a couple of install mic lines at a school just a couple blocks away from a radio station.

At the inputs to the mixer I wrapped about six loops of the mic line around a split ferrite core, snapped it closed and the interference was gone. The mic line in this case was standard 22x2 foil shield.

Mark Hannah

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Re: Quality Wireless Guitar
« Reply #21 on: February 10, 2020, 10:24:44 am »

Actually, the problem can be mitigated by adding a ferrite clamp on the guitar cable, close to the belt pack. For the record, I've seen Sennheiser D6000 do this too.

I worked with Sennheiser a few years ago on this issue with the 9000 series. The ferrite clamp helped but did not eliminate the problem. The 6000 series had not been released yet.

Should this approach work in all situations? I assume "no" as the results I experienced were not consistent between different instruments.
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Ike Zimbel

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Re: Quality Wireless Guitar
« Reply #22 on: February 10, 2020, 10:36:33 am »

I worked with Sennheiser a few years ago on this issue with the 9000 series. The ferrite clamp helped but did not eliminate the problem. The 6000 series had not been released yet.

Should this approach work in all situations? I assume "no" as the results I experienced were not consistent between different instruments.
It does really depend on the instrument, its pickup type, and internal wiring. In the one D6000 case I ran into, it was an acoustic guitar (sorry, no idea on make/model or other details). The fault was just a ton of HF noise...the ME let me fool around with the LPF on the channel, had to bring it way, way down to below 3 KHz to even start to get rid of it. Two ferrite clamps, one at the pack end, the other at the jack end, both double looped through the clamp, cleared up the issue. I have an article coming out, here (PSW), on this issue in the near future.
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~Ike Zimbel~
Wireless frequency coordination specialist.
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Re: Quality Wireless Guitar
« Reply #22 on: February 10, 2020, 10:36:33 am »


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