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Fender Pro Reverb (Silverface)

Schematic/Layout:

• proreverb_ab668.pdf
• pro_reverb_aa1069.pdf

Model/Circuit Number: AB668, AA1069
Years of Production: 1968-1982
Era: Silverface
Configuration: Combo
Controls: Silver, forward facing w/ blue labels
Knobs: Black skirted w/ chrome center, numbered 1 - 10
Faceplate

• Front: 68-76: Normal: In, In, Bright Sw, Vol, Treb, Bass - Vibrato: In, In, Bright Sw, Vol, Treb, Bass, Rev, Speed, Intensity - Pilot Lamp 76-82: Normal: In, In, Bright Sw, Vol, Treb, Mid, Bass - Vibrato: In, In, Bright Sw, Vol, Treb, Mid, Bass, Rev, Speed, Inte
• Rear: 68-76: AC Outlet, Ground Sw, Fuse (2A), Power Sw, Standby Sw, Speaker Jack, Ex. Speaker Jack, Vibrato Jack, Reverb Jack, Reverb Out, Reverb In 76-82: AC Outlet, Ground Sw, Fuse (2½A), Power Sw, Standby Sw, Speaker Jack, Ex. Speaker Jack, Line Out, Tube Matching Adj, Vibrato Jack, Reverb Jack, Reverb Out, Reverb In, Hum Balance

Cabinet

• Dimensions: 68-69: 19½'' x 26½'' x 10'', 70-82: 19½'' x 26'' x 10½''
• Hardware: Black strap handle, Large Chassis Straps 5 5/8'', 16'' Tilt-Back Legs, glides (68-71) or casters (72-82)
• Handle: Black Strap
• Feet: Glides
• Corners: Chrome Corners with Lip

Covering Material

• Tolex/Tweed: Black Tolex
• Grill Cloth: Blue White Silver grille cloth w/ aluminum frame (68-69) or w/o aluminum frame (70-80)

Logo: Grille mounted, raised, chrome & black script
Weight: 58 lbs. (26.3 Kg)
Speaker

• Size: 2 x 12
• Impedance: 4 ohms
• Model: Oxford 12L6, Oxford 12T6, Utah 12(For more info, check out the Jensen Replacement Speakers)

Effects: Reverb, Tremolo
~Watts: 40 or 70 (late models) Watts
Tubes

• Pre amp: Normal: 7025 Vibrato: 7025, ½ 7025, Phase Inverter: 12AT7 (long tailed), Other: Reverb Driver: 12AT7 Reverb Recovery: ½ 7025 Tremolo: 12AX7 (photoresistor)
• Power: 2 x 6L6GC

Bias: Fixed, adjustment pot (AA668?) or balance pot (AA1069)
Rectifier: 5U4GB, Some '78 and '79 models had a solid state rectifier.

Comments: * Some of the PRO RVB AA1069 Circuits (Silverface with the Mid control)came with a solid state rectifier. * Fender switched back to the blackface era cosmetics some time in 1980. Pro Reverbs produced between late 1980 and 1982 have a black control panel and silver sparkle grille cloth. * A Boost switch, master volume, and hum balance control was added before Pro Reverb was discontinued.