Zenith 12 & 16 inch B&W's went to a Zenith Taiwan chassis apx
1972. The 19" switched to a Taiwan chassis a few yrs later. This
one IIRC is the Taiwan version. It has an upright chassis / module.
The PCB's were crappy, etch lifted too easy when repairing them.
Known for bad vert outs & an easily repaired ground loop causing
hum bars. The last US Zenith B&W's were on 9" & 12" sets apx 1980.
They were modular but they left out the "service saver" chassis.
Great running sets but a real PIA to service. It was modular but the modules were to expensive, component level too much trouble.
73 Zeno
LFOD !