Another blast from the past. Compact transmission line speakers using Audax drive units. Built by me in the eighties.
That is an incredibly rare Onkyo stereo crossover/power-amp on top. Note the biscuit tin stand and the Harman Kardon 730 reciever in the cabinet with Technics SL-1800 on top and Teac A-103 cassette deck below. Those were the days!