Small passive speakers to supplement lounge setup?

Im looking for some small passive speakers to compliment my living room turntable setup that will sit in the back corners of the room. Ive already got 2 main ones, but I live in an apartment so my idea is if I have some auxilliary speakers pushing air, then I can enjoy better clarity from better proximity coverage, and not feel the need to turn it up so loud, thus not pissing off my nice neighbours. Im thinking like smaller 4-5 inch-ish size preferably with low profile. Any recommendations appreciated. Cheers 🙂