StewMac 65 P-REVERB, Assembly Instructions Manual

Page: 4 / 56

stewmac.com
2
© 2018 StewMac
Here’s how to build this amp!
See page
20
Wiring goes like this:
1. First, you’ll wrap the leads, connecting them without solder.
2. Then double-check all the connections. Don’t rush!
3. When everything checks out, it's time to solder .
The numbered steps tell you when.
Get the cabinet ready,
starting at Step
1
on page
8
.
You’ll prep the metal chassis
and the eyelet board too.
Learn more:
You don’t need to read the schematic , but it’s fun!
See how your guitar’s signal gets processed into sound
on page 46 .
Sort your components by type, using the parts list .
Quick look:
#10734 © 2018 StewMac
’65 P-REVERB
15W
ORIGINAL AA1164 CIRCUIT
Ground Jack Transformer Preamp tube
plate
grid
cathode
Power tube
grid
plate
cathode
screen
Capacitor Electrolytic Cap. Diode Resistor Potentiometers Rectifier tube
plate
cathode
filament
plate
Shielded
cable
Gain Gain Gain Processing Processing
Processing Processing
Output
Po
w
er
Processing
Negative Feedback
68
K
250
KA
250
KA
25
μF
50
V
25
μF
50
V
25
μF
50
V
25
μF
50
V
1.5
K
100
K 68
K
1M
40μF
500V 20μF
500V 20μF
500V 20μF
500V
B
B
D B
.1μF
22
K
100μF
100V
2
2
1
+160V +160V
6
3
+1.3V
8
+1.3V
+160V
6
8
+1.2V
+200V
6
8
+50V
7
25
μF
50
V
25
μF
50
V
1.5
K 1.5
K
100
K
250pF
+240V +240V
100K
3MRA
Speed
+320V
Vibrato
pedal
Reverb
pedal
Rev
er
b
100KL
Reverb unit
Output Input
15K-2W 15K-2W
1K-1W
.1μF
.022μF .022μF
SOCKET V1
7025
SOCKET V2
12AT7
SOCKET V7
GZ34
SOCKET V6
6V6 GT
SOCKET V4
12AX7
SOCKET V5
6V6 GT
SOCKET V3
12AX7
.1μF
.1μF
.01μF
500pF
3.3M
2700
10pF
.047μF
1
100
K
TRE
B
LE
VOL
UM
E
BASS
6.8
K
1MA
7 7
5
Extension
Speaker
TR2
TR3
TR1
TR1: 125P1B
TR2: 125A10B
TR3: 125A20B
8
8
5
6 8
4 2
3 +2.4V
2
3
3 +1.2V
+160V
1
2
1
7
2
4
+400V
+400V
6
8
+8.0V
+400V
4
3 +410V
3 +410V
+49V
100
K
47
Ω
56
K
1K
-34V
220
K +420
V
220
K
1M
1M
1M
220
K
2.2
K
1M
100
K
470
K
.033
μF
+420
V
.02
μF
.02
μF
.01
μF
56
K
1M
+260V +250KL
Intensity
100K
340VAC AC switch
1 amp
slow-blow fuse
To tube heaters
and pilot light
340VAC
3.3
K
220K
1.5
K
Output Gain Processing