Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Jalmeida on January 03, 2024, 10:09:41 pm

Title: Vox AC10 JMI Layout
Post by: Jalmeida on January 03, 2024, 10:09:41 pm

***Rev 2 PG1 Uploaded**

Adds missing jumper between R26 and R31. Adds missing jumper betwee R29 and C17.


***Rev 2 PG2 uploaded***

Correcting missing connections between Cap Can and Rectifier Tube. Also added latter model variations with 5Hy choke and 200R 5w series resistor between cap can and rectifier some latter models have.

Hello,

I just finished Rev 1 of the layout for the JMI AC10 for anyone interested. I will scrutinize the layout and make any corrections I may have missed by replacing the attached file. Feel free to comment if you see any errors.


NOTE: THIS IS NOT INTENDED TO BE ANYTHING MORE THAN A LAYOUT TRUE TO THE ORIGINAL VINTAGE AMP. THERE ARE BETTER GROUNDING AND LAYOUTS TO BE HAD FOR ANYONE INTERESTED IN A MORE MODERNIZED VERSION.

Title: Re: Vox AC10 JMI Layout
Post by: Jalmeida on January 25, 2024, 10:03:03 am

Bump for updates above.

Title: Re: Vox AC10 JMI Layout
Post by: Jalmeida on January 27, 2024, 12:57:27 pm

PG1 Rev 2 added above.

Title: Re: Vox AC10 JMI Layout
Post by: pdf64 on January 27, 2024, 03:24:58 pm

The infamous fuseless amp - bad Vox!

Title: Re: Vox AC10 JMI Layout
Post by: Jalmeida on January 27, 2024, 03:55:17 pm

Quote from: pdf64 on January 27, 2024, 03:24:58 pm

The infamous fuseless amp - bad Vox!

Yeah, many their early lower wattage amps were fuseless. I know that some(maybe all) modern UK power has a fuse in the mains plug. Not sure if that was the case in the 60s.  I have been using hidden IEC plug jacks with fuses on the slider of my builds.