I still have my 80's Pioneer 4-way CS-60 loudspeakers with turbo bass 12" woofer and selecter buttons for tone control of the ribbon tweets, they are still like brand new.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85