Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: adydula on January 13, 2016, 07:40:05 AM

Title: Voltage Check [resolved]
Post by: adydula on January 13, 2016, 07:40:05 AM

Just checked my Crack w/Speedball voltages.
The amp is several months old and plays well to me.

Its a stock Crack w/speedball...no updates of any kind.

The voltages on A1, A6 are 72.7 Volts....the spec is 90.
The voltages on B1, B4 are 72.8 Volts....the spec is 90.

The tuebs are RCA 6AS7 and a Bugle Boy 12AU7.

Should I be concerned??

Thanks
Alex

Title: Re: Voltage Check
Post by: Paul Birkeland on January 13, 2016, 07:52:56 AM

The Speedball manual (currently at least) specs 75-90V for those voltages.  A lower voltage indicates stronger emission from the tube than a higher voltage.

-PB

Title: Re: Voltage Check
Post by: adydula on January 13, 2016, 11:15:27 AM

Thanks Paul....I guess thats a good thing...back to enjoying the music!

Alex