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Fender Bandmaster Blonde

The classic Fender Bandmaster is one of Fender’s most iconic early amplifiers. As was the case with most vintage Fender amps, the Bandmaster underwent a series of both cosmetic and electronic design changes through its production

Make and model Fender - Bandmaster (Blonde)
Power (Watt) 40 W
Type Head
Channels 1
Lamps
Power lamps 2 x 5881
Preamp lamps 4 x 7025, 2x 12AX7
Rectifier Solid
Effect loop No
Effects Yes
Tremolo
Reverb No
Impedance 4/8
Size 21.5 x 60.9 x 22.8
Weight

FenderBandmaster-Blonde

Model/Circuit Number:  6G7-A
Years of Production: 1961 – 1963
Era: Blonde
Configuration: Piggyback
Controls: Brown forward facing w/ white labels, controls numbered 1 – 10

Faceplate:
Front: Normal: In, In, Vol, Treb, Bass – Vibrato: In, In, Vol, Treb, Bass, Speed, Intensity – Presence – Pilot Lamp
Rear: Ground Sw, Fuse (3A), Power Sw, Standby Sw, Speaker Jack, Ex. Speaker Jack, Vibrato Jack

Cabinet
Dimensions:

Head: 8 1/2” x 24” x 9” ~ 1961
Speaker Cabinet: Ported Tone Ring, 21” x 30” x 111” ~ 1962-1963
Speaker Cabinet: Sealed, 21” x 32” x 111”
Hardware: Large Chassis Straps 5 5/8”, Side Bar Clips, 16” Tilt-Back Legs, Thumb screws, Thumb screw receptacles
Handle: Brown Plastic Strap or Black Plastic Strap Handle ~ 1963-1964
Feet: Chrome Glides
Corners: Chrome Corners with Lip

Tolex/Tweed:

Rough Blonde Tolex

Grill Cloth:

Oxblood Grillcloth ~ 1961-1962, Beige Brown Grillcloth ~ Late 1962-1963

Logo: Flat Brown Logo

Speaker:

Size: 1 x 12 ~ 1961, 2 x 12 ~ 1962-1963
Impedance: 8 ohms ~ 1961, 4 ohms ~ 1962-1963
Model: Jensen C12N, Oxford 12K5R-1, Oxford 12M6-4, Oxford 12L6N-12(For more info, check out the Jensen Replacement Speakers)

The Fender Bandmaster evolved from a 1×15 combo in the early 50s to a 3×10 combo in the mid to late 1950s. In 1960, the vertical chassis, tweed covered Bandmaster gave way to a horizontal chassis, Tolex covered Bandmaster. The model (6G7) retained the 3×10 speaker configuration, but had a completely different circuit than the tweed versions. The 3×10 Tolex Bandmaster was very short lived and by late 1960 the amp received an updated tremolo circuit and was produced as a piggyback amp with separate head and speaker cabinet instead of a combo amp (model 6G7-A).

The earliest 6G7-A Bandmasters used the same 8 ohm output transformer as the brown Pro Amp since the speaker cabinet had a single 8-ohm 12 inch speaker. The 1×12 cabinet used a double baffle ported reflex design.

By late, 1961 Fender dropped the 1×12 ported cabinet in favor of the 2×12 infinite baffle (sealed) enclosure as used on the blonde 6G9-A and 6G9-B Bassman amps. The output transformer was, naturally, changed to 4-ohm unit with the change to the 4-ohm 2×12 cabinet. It is interesting to note that the Concert, Bandmaster, and Pro all have nearly identical circuits. The major difference is in the output transformer and speaker configuration.


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