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  #21  
Old 05-29-2021, 06:02 PM
Azjulian Azjulian is offline
 
Join Date: Dec 2015
Location: Scottsdale, Arizona
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I had noise for ages and I think someone on here suggested that I check any mixed audio, and I found that the audio in mix was set to full i turned that off and it fixed my noise.
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  #22  
Old 05-29-2021, 06:19 PM
molson309 molson309 is offline
 
Join Date: Jul 2009
Location: Longmont, CO
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Quote:
Originally Posted by backcountry View Post
Itís like a loud hum and can get softer when you pull back power. When youíre on the ground itís not to bad.
This happens only with noise canceling headsets and These headsets work in other aircraft.
Does it change with different engine RPM?
And, by chance are you using an electronic ignition and auto plugs?
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  #23  
Old 05-30-2021, 01:21 AM
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Piper J3 Piper J3 is online now
 
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Location: Hinckley, Ohio
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Quote:
Originally Posted by molson309 View Post
Does it change with different engine RPM?
And, by chance are you using an electronic ignition and auto plugs?
He has RV-12 with Rotax engine. CDI ignitions and NGK plugs are standard.
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 670

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  #24  
Old 05-30-2021, 01:50 AM
molson309 molson309 is offline
 
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Quote:
Originally Posted by Piper J3 View Post
He has RV-12 with Rotax engine. CDI ignitions and NGK plugs are standard.

Heh, should have known that from the model specific thread. I had a problem on my -7a with CDI on one mag. I got slowly increasing ignition noise in my headset and finally traced it back to the plugs/boots. Carefully cleaning the insulators and inside of the boots, then putting dielectric grease on the insulators fixed it for good. Don't know if that's what you're running into but if the noise is RPM dependent it might be worth a look.
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  #25  
Old 05-30-2021, 02:19 AM
HansLab HansLab is offline
 
Join Date: Jan 2015
Location: Netherlands
Posts: 128
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very useful this thread: flight #7 fulfilled successfully: what a marvelous ship this is!!!, but radio noise keeps bragging me. 912ULS, MGL Avionics and radio, BoseA20.
I do try changing the headset though (as well as the other tips), as soon I get to the shop.
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  #26  
Old 05-30-2021, 04:59 AM
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You might want to changeout the Spark Plug Boots. I installed hard phenolic in place of the soft rubber boots thinking that they are better for maintenance and repeated removal.

https://www.ebay.com/itm/NGK-Spark-P...kAAOSwcP5c13Bx
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 670

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #27  
Old 05-30-2021, 08:17 AM
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bjdecker bjdecker is offline
 
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Location: Georgetown, TX
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"...Loud hum..."

Sounds suspiciously like a ground loop.

Do you have "standard" 1/4" & 3/16" phone & mic plugs or are you using LEMO style?

If the former, do you have these installed on your Mic/Phone jacks? https://www.aircraftspruce.com/catal...clickkey=24641 (you need both...)
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2020 RV-14 QB -- Under construction - Tailcone & Empennage Complete.
2018 RV-7 QB -- Built, Flying
2007 RV-7 QB -- Built, Drowned, Resurrected and flying
1998 RV-8 QB -- Started, Sold
1986 Mooney 205SE
1980 Mooney 231

Aided and abetted building a number of other RV's.
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  #28  
Old 06-05-2021, 11:27 AM
backcountry backcountry is offline
 
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Location: Houston, Texas
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Quote:
Originally Posted by backcountry View Post
Itís like a loud hum and can get softer when you pull back power. When youíre on the ground itís not to bad.
This happens only with noise canceling headsets and These headsets work in other aircraft.
Quote:
Originally Posted by Check6 View Post
Well, for long hauls they are very comfortable. And I am not sure there is real hard data on the noise level but the CQ1 sure is nice, like I said once you take the time to put the ear pieces in. I replace the tips quite often just because it so easy to do and very inexpensive. Much cheaper than batteries these days
I would sure get one and try it! But please don't just try it once... at least a couple of times as like anything, change is hard but I do believe once you fly with it you will be like WOW this is so comfortable. I hope you get your noise problem fixed as that is such a pain and takes so much away from the flying! And new/intermittent stuff drives you crazy! Good Luck!
I tried my sons Clarity Aloft in the ear headset and it works great.
By the way where did you get your CQ1 headset?
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  #29  
Old 06-05-2021, 04:05 PM
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scard scard is offline
 
Join Date: Jun 2005
Location: Cedar Park, TX
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Quote:
Originally Posted by backcountry View Post
By the way where did you get your CQ1 headset?
https://cqheadset.com/
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