Fender Silverface Dual Showman Reverb

dualshowman
NO Schematic
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Model/Circuit Number: AC568, AA768 (TFL 5000D)
Years of Production: 1968 – 1981
Era: Silverface
Configuration: Head
Controls: Silver forward facing w/ blue labels
Knobs: Black skirted w/ chrome center, numbered 1 – 10
Faceplate

  • Front: In, In, Bright Sw, Vol, Treb, Mid, Bass – Vibrato: In, In, Bright Sw, Vol, Treb, Mid, Bass, Speed, Intensity, Reverb – Master Vol (72-81) – Pilot Lamp
  • Rear: AC Outlet, Ground Sw, Fuse (2┬ŻA), Power Sw, Standby Sw, Speaker Jack, Ex. Speaker Jack, Vibrato Jack, Reverb Jack, Reverb Out, Reverb In

Cabinet

  • Dimensions: 13 x 26 x 9
  • Hardware: Medium Chassis Straps 4 5/8”
  • Handle: Black Strap
  • Feet: Glides
  • Corners: Corner Protectors

 

Covering Material

  • Tolex/Tweed: Black Tolex
  • Grill Cloth: Blue sparkle grille cloth w/ aluminum frame (68-69), w/o aluminum frame (70-81)

Logo: Grille mounted, raised, chrome & black script “Fender” w/ tail(68-75) or “Fender” w/o tail (76-80) (head and cab)
Weight: 40 lbs. (Head)
Speaker Cabinet Configuration:

  • Dimensions: 45-1/2 x 30 x 11-1/2 – Sealed
  • Handle: 3 Black strap handles
  • Feet: Glides or Casters (72-81)
  • Corners: Corner protectors
  • Tolex/Tweed: Black Tolex
  • Grill Cloth: Blue sparkle grille cloth w/ aluminum frame (68-69), w/o aluminum frame (70-81)
  • Weight: 154 lbs
  • Speakers/Load: 2 x 15″ / 4 ohms (8 ohms each in parallel)
  • Speaker Model: JBL D-130F

Effects: Reverb, Tremolo
Watts: 68-76: 100 Watts, 77-81: 135 Watts
Tubes

  • Pre amp: Normal: 7025, Tremolo: 7025 and 1/2 7025
  • Power: 4 x 6L6GC

Bias: Fixed with bias adjustment pot.
Rectifier: Solid State
Phase Inverter: 12AT7 (Long Tailed)
Tremolo: 12AX7 (photoresistor)
Reverb Driver: 12AT7
Reverb Recovery: 1/2 7025

Comments:
Late seventies circuit changes included a Line Out jack, hum balance pot, and a pull boost sw.

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