Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: ksridevi on November 23, 2013, 02:09:58 PM

Title: Popping sound each time Crack is turned off
Post by: ksridevi on November 23, 2013, 02:09:58 PM

Hi Folks:
Each time I turn the power down on my Crack, after a few seconds I hear loud pop sounds from the headphones. Could you please let me know what could be the source of it and how to resolve it?

Thank you!

Title: Re: Popping sound each time Crack is turned off
Post by: Paul Birkeland on November 24, 2013, 07:52:49 AM

Is it from both channels?

Do you have a stock amp, or an amp with the Speedball?

Title: Re: Popping sound each time Crack is turned off
Post by: ksridevi on November 24, 2013, 08:59:20 AM

Hi Paul,
Thanks for your reply and time. This is Avi, OPs hubby, it is from both channels, but I might be wrong since they are so loud I just take the Senn HD 650 headphone out of my ear before I turn the crack off. Its  a stock amp and not yet updated to Speedball. Planning to check for any loose solder connections in sometime. Hopefully that will resolve this pop.

Title: Re: Popping sound each time Crack is turned off
Post by: ksridevi on December 01, 2013, 11:56:56 AM

Hi:
I checked and re-checked each and every solder and they all seem fine. When the headphone is connected to the jack and I turn it off, thats when I hear a few pop sounds from the headphones, see no visible arcs from any solder connections. When I turn the amp off with the headphone unconnected, I hear no pop sounds. Is it advisable to connect the headphones after the amp is turned on and disconnect the headphones before the amp is turned off? I tried with both my Senn HD 650 and Grado SR60i with the same result. Kindly let me know.

Thank you.

Title: Re: Popping sound each time Crack is turned off
Post by: Paul Birkeland on December 01, 2013, 02:07:13 PM

This may just be abnormal tube behavior from power cycling.  You could just leave the Crack on 24/7 and not worry too much about it.

-PB

Title: Re: Popping sound each time Crack is turned off
Post by: ksridevi on December 01, 2013, 03:16:34 PM

Thanks again for your time and reply, Paul. Is there a way I can get replacement tube from Bottlehead and I can ship back the old ones back?

Title: Re: Popping sound each time Crack is turned off
Post by: Paul Birkeland on December 01, 2013, 03:35:59 PM

Sure, if you mail the tubes back, we can replace them.

Title: Re: Popping sound each time Crack is turned off
Post by: ksridevi on December 02, 2013, 12:57:50 PM

Hi Paul: Just wanted to update that I pulled the tubes out and put it back in. So far I haven't yet heard any popping sound each time I turn the crack off. Hopefully it continues :). Again, thanks for your reply and help so far.

Title: Re: Popping sound each time Crack is turned off
Post by: audiophileboss on December 02, 2013, 03:02:11 PM

I had a problem similar to that with an Audio Research tube amp. I pulled the tubes out and cleaned the pins, worked great! Also, I don't suggest leaving your crack on 24/7. IMO

Title: Re: Popping sound each time Crack is turned off
Post by: Paul Birkeland on December 02, 2013, 05:48:10 PM

Quote from: ksridevi on December 02, 2013, 12:57:50 PM

Hi Paul: Just wanted to update that I pulled the tubes out and put it back in. So far I haven't yet heard any popping sound each time I turn the crack off. Hopefully it continues :). Again, thanks for your reply and help so far.

Yeah, those old school 6080's can get a little oxidized on the pins, leading to what you described.

-PB