Links to Assembly Manuals and Related Items on Google Docs
The Heathkit AD-27 was based on the Heathkit AR-14 stereo tuner/amplifier.
Specification Sheet - Heathkit Kit Builders Guide - Invoice and miscellaneous items
AD-27 Assembly Manual (manual number 595-1134 dated 28th March 1969).
The circuit diagram which folds out from page 115 contains very small text so I have scanned it at higher resolution.
Assembly manual - Amendments and additional Information - Circuit Diagram
Berkeley Loudspeakers (model SCM-3, manual number 595-G590-01 dated 10th September 1970).
Assembly manual - Amendments - Additional information
As mentioned in my blog posts:
