Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: Tomunizum on June 14, 2021, 10:29:33 AM

Title: Metallic gong-like sound through headphones when tapping [resolved]
Post by: Tomunizum on June 14, 2021, 10:29:33 AM

Hello

When the crack is on only, with headphones plugged in, during the first couple of minutes of it powering up, whenever I tap on / jostle the body of the crack:

I hear a sound like what you would hear if you tapped on a metal hollow object or one that reverberates. It resolves after warm up period.

The crack works perfectly, I have had no issues and it passed all checks in the guide.

I am thinking this is benign and something due to the anatomy of the device but I just wanted to make sure this is not a sign of something that could be or is problematic down the line. Something like a bad joint or bad component placement etc.

Thank you ahead of time to any help that is dedicated to my matter.

Best,
Tom

Title: Re: Metallic gong-like sound through headphones when tapping or jostling crack
Post by: Paul Birkeland on June 14, 2021, 11:10:16 AM

This is tube microphony.  It's benign and can be ignored.

Title: Re: Metallic gong-like sound through headphones when tapping or jostling crack
Post by: Tomunizum on June 14, 2021, 11:44:07 AM

Thank you much for the quick reply Paul.

This resolves my issue.

Best,
Tom