@Vince
actually, if you can spare a floppy and a DVD ...
did a minor haul today. 2 T+A TMR 80 for silly money, need to see if they work, 2 Dolby HX tapedecks (pioneer and yamaha), 1 pico scope, 1 arcade joystick, and a couple of assorted cables and spacers.
Currently repairing the Quadral Montan plus checking out the T+A
Have a look at aphoto of the crossover. I think the defective part is easily identified ...