Just moved in - how to tell quality of in-ceiling speakers?

     Just moved into a new house, and in the living room there are four in-ceiling speakers (they’re wired as stereo with two on each channel). Behind where the TV is supposed to go eight wires come out of the wall, four red and four black. Right now I don’t have any way to connect to speaker wire, I assume I would need an amp? My main question is that I don’t have any idea what brand or model of speakers these are, so I don’t want to spend a disproportionate amount on an amp. How would you recommend that I test the sound of these speakers before committing to any purchases?

Thanks!