I have finally fully glued up three MDF subwoofer cabs of the DIYsoundgroup variety. I still need to flush-trim the overhangs and sand, but then it will be time to apply a finish. I think the best and easiest option for me would be a roll-on textured coat. I don't have any experience with using this kind of product, so I am seeking input. Also regarding the color. Some are black or white only, and some you can tint AFAIK. Is it worth getting a tintable variety so that I can choose the ultimate color and shade, or is that just making things more complicated and asking for trouble? What products and techniques do you recommend?
Another option, assuming I can prep very smooth surfaces, is metallic paint like this:
https://www.amazon.com/Modern-Masters-ME150-GAL-Metallic-Silver/dp/B0006HHJ2Y/ref=sr_1_4
https://www.amazon.com/Modern-Masters-ME150-GAL-Metallic-Silver/dp/B0006HHJ2Y/ref=sr_1_4
Truck bed-liner paint will give you a textured tough (epoxy) finish. Online or an auto parts store
There are products like Dura-Tex that are meant for cabinet coatings and are low VOC, etc. I had these in mind, sorry for not being more specific.
FWIW, most of my active DIY audio 'career' was doing vehicle custom consoles, speaker boxes way back when wrinkle finish became the latest 'new best thing' among the Kustom Kar aficionados so initially just used the rather expensive spray cans, but pretty quickly switched to custom color mixed paint I loaded with sand so I could use a touch up hopper gun to quickly spray the heavy coats required for a good 'orange peel'.