Pictures sent by Ron Bliss :

RSPM IV Crossover schematics (bi-wired version)

SACM with grills ;

SACM without grills.

IMF Electronics, Richardson Street, Hywcombe, Buckinghamshire, England

Matching crossovers, inspecting, graphing tweeter response, outside contract work

Inspecting in-coming walnut panels, Super Compacts

awaiting final assemble

Reference Standard Monitor Mark IV’s final assemble

Super Compact Mk II final wiring

Testing completed crossovers

Beginning assemble of TLS-80 Mk II

TLS-80 Mk II - Half complete, foam & wiring installed

Final testing of TLS-80 Mk II

Crossover test unit

Soldering Inspection through magnifying lens

Coil winding & electronic assemble