I've had a pair of Optimus STS-8 towers for ~25 years. After trading the truck, I had these https://www.madisoundspeakerstore.co...e-rear-chambe/ (thanks Glenn) and Eton 8-472 hex (thanks Daniel) that will not work in new ride. So...
They sound pretty good now, but 25 y/o mid is a little weak. They are single airspace (1.5 cu^ft, tuned to 24). Need a budget friendly mid option. Current is 5", but I can modify for smaller if needed. TIA for any input