I purchased the SX-25 from the Greater Houston Hamfest and the PM-23 speaker from Robert's Military Radios
The manual for the SX-25 is available here : Hallicrafters_SX-25_Manual
Robert is a great guy who specializes in military radio hardware and documentation. If you need anything related to military radios go look him up!
|Hallicrafters Super Defiant SX-25 and Hallicrafters PM-23 Speaker|
The Hallicrafters SX-25 Super Defiant receiver was manufactured from 1940 to 1946. It was touted to have better performance than that of the famed Hallicrafters SX-17 receiver. Among its outstanding advantages were extreme selectivity and more and better audio.
The Hallicrafters SX-25 is a single conversion superheterodyne communications receiver with 12 tubes. It uses two 6F6 tubes in the audio amplifier section and produces wonderful sound.