Can the speakers be upgraded on the Code 412 cabinet? If so, is it something a person can do who’s never changed a speaker before, or would it need professional installation?
Very simple. I upgraded as I use 7 and 8 strings so the low end was not good. Make sure your speakers are 12 inches an are at 8 ohm with a 50 watt min per speaker. You can go up in watts like I did with my Eminence Man O Wars and Wizard speakers. Take lots of pictures before you start and do one at a time. Once you have the back panel unscrewed do not pull off the panel, only open enough to see how your cab speaker jack is connected then you can disconnect it. I almost ripped out my speaker jack and wiring doing it. Here is my before and after rig.
https://www.dropbox.com/s/g9dpwsq43ie87fd/IMG_0976.JPG?dl=0
https://www.dropbox.com/s/3pggwymimr6m1p8/IMG_1097.JPG?dl=0
If your looking for more tones check out this site for 1000s of presets. https://marshallcode.tools/
I went with Eminence for price and USA made. Celestions are great but you gotta pay for them. I got my speakers from Sweetwater and they will shake walls literally.
Wow — thanks for the detailed answer! I recently got the Marshall Code cabinet and head from Sweetwater, actually. I'll look there for speakers, as you suggested. Great information. You rock :)
