1968-1982 Twin Reverb
(Silver Face Twin Reverb)

Year:

 1968-1982

Model:

 Twin Reverb

Circuit:

 AC568, AA769, AA270

Config:

 Combo

Control Panel:

 Silver, forward facing w/ blue labels

Front Conrol Layout:

 68-71: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass - Vibrato: In, In, Bright Sw, Vol, Treb, Bass, Rev, Speed, Intensity - Pilot Lamp
72-83: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass - Vibrato: In, In, Bright Sw, Vol, Treb, Bass, Rev, Speed, Intensity - Master Vol - Pilot Lamp

Rear Conrol Layout:

 AC Outlet, Ground Sw, Fuse (2½A), Power Sw, Standby Sw, Speaker Jack, Ex. Speaker Jack, Vibrato Jack, Reverb Jack, Reverb Out, Reverb In

Knobs:

 Black skirted w/ chrome center, numbered 1 - 10

Cabinet:

 20" x 26½" x 10½" (50.8 x 67.3 x 26.7 cm)

Cab Covering:

 Black Tolex

Cab Hardware:

 Black strap handle, 5½" Chassis straps, 16" tilt-back legs, corner protectors, glides (68-71) or casters (72-82)

Grille:

 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 (68-74) or "Fender®" w/o tail (74-82)

Weight:

 69 lbs. (31.3 Kg)

Speakers/Load:

 2 x 12"/4 ohms (8 ohms each in parallel)

Speaker Model:

 Oxford 12T6, Utah 12", Rolad 12" or Gauss 12"

Effects:

 Reverb, Tremolo

Output:

 68-76: 100 Watts
77-82: 135 Watts

Preamp:

 Normal: 7025
Vibrato: 7025, ½ 7025

Power:

 4 x 6L6GC

Bias:

 Fixed, adjustment pot or balance pot (AA769, AA270)

Rectifier:

 Solid State

Phase Inverter:

 12AT7 (long tailed)

Other:

 Reverb Driver: 12AT7
Reverb Recovery: ½ 7025
Tremolo: 12AX7(photoresistor)

Comments:
  • A master volume was added in 1972.
  • Other late seventies circuit changes included a Line Out jack, hum balance pot, and a pull boost sw.
  • Fender switched back to the blackface era cosmetics some time in 1980. Twin Reverbs produced between late 1980 and 1982 have a black control panel and silver sparkle grille cloth.