@chorus - maybe these are parallel decisions, not substitutes? DIY speakers a hobby where experience can lead to great results. Not possible to duplicate the engineering or construction of the ProAcs, and why bother if DIY? Point of DIY is doing your own thing (at least for me). But 100% do a separate project - even if the first try at DIY speakers don’t meet expectations, you will learn a ton
Consider outsourcing the cabinet to someone with direct experience - cabinet from scratch not possible without real workshop, and assembling a cabinet kit to good level of quality requires space & some real tools. Cabinet kits can be assembled by any local cabinet maker. I do this b/c just don’t have time or setup for cabinets. Lets one spend time thinking about the drivers, xover, doing some soldering, etc.
Zero resale value for DIY speakers absent specialized circumstances, nor possible to give them away (sorry). Drivers worth maybe 10% of cost. Fun expectation, however, is to re-use electronics in different designs, etc.
@lemonhaze + 1; where did you get the cabinets pictured? (3rd party design, kit, pre-assembled?) Look terrific
Have a great day