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Author Topic: Interesting fault  (Read 140 times)

Offline Dibbs

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Interesting fault
« on: March 08, 2021, 03:57:00 AM »
In all my years I've never come across this fault before.

The multiphonic low E here.  I've never heard anything like it before.  I'm not growling or anything like that.

https://app.box.com/s/xktd221m8drawbv5mvtz2pc7hnu35vby

I've fixed it now but let's see if anyone can guess what the cause was.

Offline Dibbs

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Re: Interesting fault
« Reply #1 on: March 08, 2021, 04:00:17 AM »
Clue:  It only happens playing loudly.

Offline jdbassplayer

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Re: Interesting fault
« Reply #2 on: March 08, 2021, 01:44:22 PM »
Seems like a spring issue. One of your keys is opening slightly when you play causing the fluttering sound. Most likely this would be the F#/C# key but could be any key held down under spring tension. Try pushing the pad cup down somehow while playing and see if it goes away.

-Jdbassplayer

Offline Dibbs

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Re: Interesting fault
« Reply #3 on: March 08, 2021, 03:28:54 PM »
Dead right Jared.

It was a weak spring on the Ab/Eb key.  It was originally too strong and I'd been trying to lighten it but I overdid it and this happened.  I've never come across anything like it before.  It only affected the low E.  Every other note was fine.

Offline LarryS

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Re: Interesting fault
« Reply #4 on: March 09, 2021, 12:15:01 AM »
A bit of sympathetic vibration. Would be neat if all the notes sounded like that 😉
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Offline Dibbs

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Re: Interesting fault
« Reply #5 on: March 09, 2021, 07:37:05 AM »
A bit of sympathetic vibration. Would be neat if all the notes sounded like that 😉

A barrel with a membrane in it like a kazoo might be interesting.  The Chinese dizi flute has that sort of arrangement.

Offline modernicus

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Re: Interesting fault
« Reply #6 on: March 10, 2021, 11:04:00 AM »
I've had this exact problem before. 8)
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Offline Windsong

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Re: Interesting fault
« Reply #7 on: March 10, 2021, 08:07:34 PM »
Jd--that was my assumption, too.  Failing that, I would have guessed a torn fish skin on a pad, that was not completely disengaging from the tone hole whilst lifted.
Thanks for sharing that, Dibbs.  I love puzzlers.
« Last Edit: March 11, 2021, 09:05:03 AM by Windsong »
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