Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: A Jedi on September 19, 2021, 06:33:57 AM

Title: Speedball voltage ok? [resolved]
Post by: A Jedi on September 19, 2021, 06:33:57 AM

I'm getting ~117VDC @ 0A and 0B on the large SB board (spec 75-100V). This is outside of the 10% tolerance stated in the manual. Is it a big concern? If so, what do I need to look at? This is a stock build, no crazy mods. TIA

Title: Re: Speedball voltage ok?
Post by: Paul Birkeland on September 19, 2021, 06:41:27 AM

Often when we see that it is a combination of a very strong 6080 tube and a moderately used 12AU7. 

Title: Re: Speedball voltage ok?
Post by: A Jedi on September 19, 2021, 06:55:57 AM

Gotcha thanks. So basically don't worry about it?

Title: Re: Speedball voltage ok?
Post by: Paul Birkeland on September 19, 2021, 06:56:25 AM

I wouldn't, especially since the OA and OB voltages on the big board are about the same.

Title: Re: Speedball voltage ok?
Post by: A Jedi on September 19, 2021, 07:02:51 AM

Thanks!