Wow, that's a tiny maximum size. I can definitely relate to building a system in a small space. I started with SuperZeros as mains many years ago. They're now my surrounds in a home theater system. For music I am using ProAc Tablette 50 Signatures, which are very good mini monitors that produce a big sound for such a tiny box. They were discontinued a few years ago, but do pop up on occasion here for about $800-$1000 used. However, they may still be too big for what you're searching for. They are approximately 11" tall, 6.5" wide and 8" or 9" deep. Will you be placing the speakers on a bookcase, shelf or is wall mounting an option? Wall mounting might allow for a deeper speaker. Hopefully someone else will have a better recommendation for you. Good Luck!
