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Gear / Technical Help => Ask The Tapers => Topic started by: robeti on October 11, 2021, 06:52:58 PM

Title: squeaky / mosquito sound on channel
Post by: robeti on October 11, 2021, 06:52:58 PM

Hello,

I've taped a show a few days ago.
My rig: mk41 > nbobs > babynbox > r-05

On one channel there's a squeaky/mosquito like sound.
https://we.tl/t-wLXYlZC182

Can someone explain what went wrong here?
The gear is brandnew. First time I've used it. The recorder is good as new too.

Title: Re: squeaky / mosquito sound on channel
Post by: Gutbucket on October 11, 2021, 07:42:06 PM

Was that the buzz in the air at the event?

Joking aside, if it wasn't something actually recorded, first determine if it is constant through the entire recording and if it is in both channels.  Then make some tests trying to recreate the situation. Was there anything electrical in close proximity with the recorder or preamp such as a phone?  Doesn't sound like cell phone interference, but could we some more constant EMI interference.

In the short sample it sounds constant in the left channel.  If its only in that channel, try swapping channels at the mic capsules, then at the nbox, then at the recorder, to determine if and when the buzz switches sides along with any one particular component.  If/when it does, you'll have isolated where it is coming from. May take some custom interconnects or creative temporary patching to do so.

Title: Re: squeaky / mosquito sound on channel
Post by: robeti on October 12, 2021, 04:42:02 PM

Thanks.  One channel only indeed.

Anyone else had this?

Title: Re: squeaky / mosquito sound on channel
Post by: beatkilla on October 12, 2021, 06:20:04 PM

That sucks.

If you swap capsules around does the noise follow or stay where it was?

Title: Re: squeaky / mosquito sound on channel
Post by: seethreepo on October 13, 2021, 05:48:10 PM

Quote from: robeti on October 12, 2021, 04:42:02 PM

Thanks.  One channel only indeed.

Anyone else had this?

Assuming you only have one set of cables to test (& no bodies), you might be able to go to a local music store with cables / bodies and ask to demo/test your caps. 

Title: Re: squeaky / mosquito sound on channel
Post by: Nosmo King on October 18, 2021, 01:41:55 AM

Any chance you have a somewhat longer sample, preferably one between songs so there's no music to mask the noise?

Thanks!

Title: Re: squeaky / mosquito sound on channel
Post by: ero3030 on October 19, 2021, 03:58:46 PM

Record something at home and reproduce it?  Swap caps and right/left cables one at a time with headphones on to check for issues.  Check all batteries with a volt meter after recharging.  Ed

Title: Re: squeaky / mosquito sound on channel
Post by: robeti on December 03, 2021, 07:14:28 PM

Just came from a show. Problem seems to be fixed. No more squeaky sound:) I think it was the 9v battery.

Title: Re: squeaky / mosquito sound on channel
Post by: F.O.Bean on December 03, 2021, 07:33:00 PM

Glad the issue is fixed!!!

I'd STILL try to recreate the problem at home if i were you though! You don't want it to happen again, especially if it can be prevented ;)

Title: Re: squeaky / mosquito sound on channel
Post by: One Cylinder on December 03, 2021, 11:23:58 PM

And at the cost of a single 9v battery. Would be great if all high end gear issues could be remedied for under 5 bux!   :bigsmile:   
 

Quote from: F.O.Bean on December 03, 2021, 07:33:00 PM

Glad the issue is fixed!!!

Title: Re: squeaky / mosquito sound on channel
Post by: robeti on December 06, 2021, 03:28:13 AM

I agree!

Quote from: F.O.Bean on December 03, 2021, 07:33:00 PM

Glad the issue is fixed!!!

I'd STILL try to recreate the problem at home if i were you though! You don't want it to happen again, especially if it can be prevented ;)