I built a few sets of home theatre speakers. The first set were an experiment and they turned out so good that I just kept going. They are about 150cm high with two 8" drivers, a silk dome tweeter and a 6" mid separated internally with a baffle.

I made a circle jig for a cheap Ozito router. Two passes are required to cut a rebate so the drivers sit flush.

These ones deviated from the original design with a single poly cone woofer, titanium tweeter and grills. They ended up sounding more detailed but with less bass. The dual 8" cabinets are almost too bassy.