Blackface Princeton Reverb Clone (Circuit AA1164)
A classic in its range is the Princeton reverb, which combines a compact design with the well appreciated cristal clear Fender guitar sound. The manageable box and the variety of sound enhancements given by its spring reverb and BIAS- modulated vibrato provides you best support wherever you wanted to let your guitar start singing.
Pictures taken with my digicam:
Schematics and other drawings have been made using CorelDraw! X5 or sPlan 7.0 (Abacom). Having caused your interest I will be able to provide the original files (of course for private use only!).
Original Princeton Reverb Amp
My Princeton Reverb Clone
Some mods and details:
Grid-Stoppers to G1 of V5 and V6, 1.5kOhms each.
Screen grid resistors added for V5 and V6, 470 Ohm / 2Watts each.
Variable BIAS-voltage by means of 10k resistor and 22k trimm-pot in series (instead of the 22kOhms resistor).
Tubes and other parts I used:
V1: Fender 7025, V2: Telefunken ECC81, V3 u. V4: RSD ECC83, V5 u. V6: EH 6V6GT, V7: EH 5U4GB
Mains transformer: TAD 125P1B, Output transformer: Hammond 1750E, Reverb-driver: Hammond 1750A
Reverb-tank: Accutronics 4AB3C1B (of course similar parts from other manufactures will do as well)
By this Power transformer combined with the rectifier tube all voltages are perfectly within the range of values as given by Fender (±10% variation allowed).
Technical details:
Project documentation
|
Model: |
AA1164 |
|
BIAS: |
fixed |
|
Year of manufacture: |
1964-1967 |
|
Speaker |
|
|
Power: |
14-15Watt |
|
Manufacturer/Type: |
Jensen C10R (u.a.) |
|
The tubes |
|
|
Format: |
10” |
|
Preamp |
12AX7 |
|
Impedance: |
8 Ohms |
|
Phase-Inverter |
12AT7 |
|
|
|
|
Power-Stage; |
6V6 |
|
Effects: |
Reverb, Vibrato |
|
Rectifier: |
5U4GB |
|
|
|
Updated on Oct. 25th, 2013
A more self explanatory circuit diagram
Some adaptions of values to current standards
Some small improvements
(c) 2013 Dipl.-Ing. B. Brieskorn