BUGERA 333XL Homemade cable for switching amp wihtout FSB104

[grandben30]

Hello everyone
I am using for many years a BUGERA 333XL with its FSB104 footswitch equipped with a 5 MINIDIN PIN jack.
I have asked whether it was possible to make a specific cable to able to control my BUGERA head with another footswitch (such JOYO FXL-LIVE) using a stereo cable?
If someone has already done that, can anyone give me the way to proceed?
Thank you

[Enzo]

The FS jack on the amp has four active pins plus ground. It is a digital control system inside. The four inputs are direct inputs to a controller IC, and require momentary switching.

I don't know what is inside the FSB104. I believe input 4 turns the FX loop off and on, I can't say whether the other three are straight on off controls or if there is digital encoding in the FSB and combinations of these do something. SImple experiments will tell that.

[grandben30]

Thank you for the answer. I will try all of this. I've found a lot of electric schem about FSB104. Any idea?

[deFaoite]

Hi,
can anybody confirm the circuitry in the PDF? I have attached it again.

I have the same problem that I cannot find the footswitch FSB104A.

I will built the footswitch myself. My electronics knowledge is very limited so I am a little unsure what might happen with the amp when the circuitry is false.

Some information would be great!

Regards,

Wayne White