Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: tdvt on November 09, 2023, 03:36:48 pm

Title: Old-school cap notation/Gibson schematic
Post by: tdvt on November 09, 2023, 03:36:48 pm

Looking over a Gibson schematic , one a few that could potentially match an amp my son has.

A few coupling cap values are listed with a double-micro notation (500uuF).

Does that convert to 500pF?


https://el34world.com/charts/Schematics/files/Gibson/Gibson_ga_19rvt.pdf (https://el34world.com/charts/Schematics/files/Gibson/Gibson_ga_19rvt.pdf)
 

Title: Re: Old-school cap notation/Gibson schematic
Post by: Esquirefreak on November 09, 2023, 04:16:05 pm

Yes. Fender wrote MM (micro micro farad) on some schematics, meaning pF.

/Max

Title: Re: Old-school cap notation/Gibson schematic
Post by: tdvt on November 09, 2023, 04:25:24 pm

Very Good
Thanks

Title: Re: Old-school cap notation/Gibson schematic
Post by: Esquirefreak on November 09, 2023, 04:28:18 pm

Sluckey was the one who educated me on the topic  :icon_biggrin:

/Max

Title: Re: Old-school cap notation/Gibson schematic
Post by: tdvt on November 09, 2023, 04:47:20 pm

Quote from: Esquirefreak on November 09, 2023, 04:28:18 pm

Sluckey was the one who educated me on the topic  :icon_biggrin:

/Max

He's like that..

Title: Re: Old-school cap notation/Gibson schematic
Post by: sluckey on November 09, 2023, 05:14:25 pm

Back in the day we called them Micky-Mike rather than micro-micro.