This looks like an option for someone who wants to busk without a power supply.

40W isn't a lot of power.

I think that it's important to buy a good sound system, even for small rooms to 1) capture as much as possible the whole dynamic range of an arranger keyboard, 2) avoid ear fatigue from inferior speakers.

I use 2 FBT Maxx 2A's. If it's a small gig, I only bring in one speaker. But I'm carrying something like 600W of power with me all the time. I probably play louder than other musicians, but almost no one ever complains. Why? Because it sounds great. No one talks about my sound system. They only talk about my performance. Probably a good sign.

I bought these speakers because it had great specs for bass response for a 10", and it won handily in a blind testing shootout with other 10" speakers.

I don't get on the floor much to hear my sound system, but I have heard the Bose L1s and Bose compact, and I'm very impressed. If I were to start over, I would consider the Bose.