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FENDER 400PS
1970-1975
Configuration: Head
Power: 435 Watts
Effects: Reverb, Tremolo
SCHEMATIC
LAYOUT
- Front Panel: Power Switch, Standby Switch, Pilot Light - "Bass" In, In, Deep Switch, Volume, Treble, Bass - "Normal" In, In, Bright Switch, Volume, Treble, Middle, Bass, Reverb, Speed, Intensity - Master Volume
- Back Panel: Speaker Jack, Speaker Jack, Speaker Jack, Output Tubes Matching, Vibrato Jack, Reverb Jack, Hum Balance Preamp, Fuse, Ground Switch
CABINET
- Dimensions: 11½'' x 28'' x 12¾''
- Tolex: Black
- Grill Cloth: Blue / White / Silver or Black w/ White Trim
- Logo: Grill Mounted, Raised, Chrome and Black Script w/ Tail
- Handle: 3x Black Strap
- Feet: Casters
- Corners: Chrome Corners w/ Lip
- Knobs: Black Skirted w/ Chrome Center Numbered 1-10
SPEAKER
- Size: Fender Bass Bottom Ext Cab 1 x 18 with folded-horn design
- Impedance: 4 ohms
- Model: ?
TUBES
- Pre amp: 2 x 7075 ; 12AX7, 6L6GC
- Power: 6 x 6550
- Bias: Fixed
- Rectifier: Solid State
Comments: The 400PS was the first large amp made by CBS, and the largest ever made by Fender. The chassis alone weighs as much as a Twin Reverb.
The output of the 400PS was divided into three 145 Watt power sections so it took three cabs to get the entire 435 Watts.