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Reverb send
To Tank Input
022921
V1
V2
100k
+
+
RG174
Shielded
V1-2
V1-7
1m
Volume
12a
1ma
Hoffman Amplifiers Princeton Reverb
Reverb Return to Tank Output and Foot switch jack
220k
V3
FeedBack
+
+
+
Treble
Bass
250ka
250ka
Vibrato Foot switch jack
V4
+
Intensity
Reverb
Speed
250kl
100kl
3mra
V5
OT
.1
18k/3w
18k/3w
D
C
B
Ground Buss
www.hoffmanamps.com
3.125" x 11.5"
V6
OT
Bias Range
10kl
Bias Tap
1k/3w
A
To Power
Transformer
Ground Lug
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Summary of Contents for Hoffman Princeton Reverb
- Page 1 FeedBack Bias Range 100k 10kl Bias Tap 18k/3w 18k/3w 1k/3w RG174 Shielded V1-2 V1-7 To Power Transformer Ground Buss Ground Lug Intensity Treble Reverb Volume Bass Speed 250kl 250ka 100kl 250ka 3mra www.hoffmanamps.com 3.125" x 11.5" Hoffman Amplifiers Princeton Reverb...
- Page 2 Standby FeedBack Power Transformer Speaker Jack Pin 3 To heaters Board A Pin 3 To heaters Lamp Output Transformer Clickable Links Hoffman princeton Reverb Hoffman Amplifiers parts catalog www.hoffmanamps.com EL34 World Tube amp Library page Hoffman Layout diagram hookup information...
- Page 3 RECOVERY 500p 100k Reverb Tank .0033 REVERB 4AB3C1B V2-A V2-B 022921 100kL V3-A 470k REVERB FOOTSWITCH 2.2K 220k 22uf 22uf 1.5k Hoffman Princeton Reverb PREAMP and REVERB www.hoffmanamps.com Thanks to Sluckey on the Hoffmamps forum for creating the original schematic...
- Page 4 1k / 3w 18k / 3w Heaters NEUTRAL Optional Lamp Standby switch 40uf 20uf 20uf 20uf Heaters Multi Section Filter Cap Hoffman Princeton Reverb 40x20x20x20 / 475v www.hoffmanamps.com Thanks to Sluckey on the Hoffmamps forum for creating the original schematic...
- Page 5 10kl Hoffman Amplifiers Princeton Reverb www.hoffmanamps.com...