Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: mtheshark90 on June 06, 2020, 04:39:29 AM

Title: Power Tube "clinks" once hot
Post by: mtheshark90 on June 06, 2020, 04:39:29 AM

I've been tube rolling lately with some different 6080's and 12AU7's, and came across a weird issue I haven't seen before. My Tung-Sol 6080, after warming up for a couple of minutes, will start to make clinking sounds that come from the physical tube itself. The best way to describe it is -- it's like the metallic clinking you hear if you warm a pan up on the stove.

I'm not sure if this is actually a problem or not, or if it means that the expanding metal may cause the tube to spontaneoulsy break on me. I just found it be quite bizarre. If I wear the headphones while it makes this clink sound, I can hear it resonate into the headphones as well. Should I get this thing replaced?

Title: Re: Power Tube "clinks" once hot
Post by: Paul Birkeland on June 06, 2020, 04:49:35 AM

That is the sound of glass getting hot/cooling off and it isn't anything to worry about.

Title: Re: Power Tube "clinks" once hot
Post by: mtheshark90 on June 06, 2020, 04:52:36 AM

Thanks Paul! That's all I needed to hear. Was worried the tube would crack or something. Take care!