Fisher Model 400 (circa 1963)
Little is documented about the Fisher Model 400 outside its period reviews. The record shows it was a stereophonic FM multiplex tuner combined with a twin-channel control amplifier on a single chassis - a self-contained receiver from Fisher's early-1960s tube era. High Fidelity (December 1963, p.67) listed the Model 400 at $329.50, with an optional walnut or mahogany cabinet at $24.95. It gave the dimensions as 17½ × 5⅜ × 13 inches.
The same review noted a measured IHFM sensitivity of 1.8 µV at 98 mc. The antenna input is 300-ohm balanced, with separate "local" and "distant" terminals. There is also provision for a center-channel amplifier and speaker (High Fidelity, December 1963, p.68). HiFI-Stereo (November 1963, p.31) published an averaged IM distortion curve with both channels driven. Beyond these review excerpts, almost nothing survives. No schematic, service manual, or production-run details have surfaced in the archive.
Known specifications from period reviews:
- Type: Stereo FM (multiplex) tuner / twin-channel control amplifier on one chassis
- Price: $329.50 (cabinet $24.95 extra)
- Dimensions: 17½ × 5⅜ × 13 inches
- FM sensitivity: 1.8 µV (IHFM, at 98 mc)
- Antenna: 300-ohm balanced, local/distant terminals
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