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The Hammond
transformer line contains a few natural pairs of devices, but
most other pairings are less obvious. Based on the standardized
data, we have developed a list of suggested units that work
together. Some of these pairings tie into the projects from
TUT3 (The Ultimate Tone vol.
3), which contains both schematics and layouts for each
project. Every TUT3 amp can be built on a standard Hammond 10"
x 17" x 3" chassis. The Champ and Herzog can be built on 8"
x 12" x 3".
TUT3 PROJECTS USING HAMMOND TRANSFORMERS
| Amp |
OT |
PT |
| Champ |
125B
/C /D /E |
270X
or 261C6 with solid-state rectifier |
| |
125BSE
/CSE /DSE /ESE |
272X
with 5Y3 rectifier |
| |
|
229B230
plate + 229A12 heaters, add 229C10 if tube rectified |
| |
|
|
| Bassman |
1650K |
272JX |
| |
|
|
| Plexi
5100 |
1645 |
272JX |
| |
|
|
| 800 |
1645 |
272JX |
| |
|
|
| Bulldog |
1650K |
272JX |
| |
|
|
| AC30 |
1645 |
270HX |
| |
|
|
| AC15 |
125E |
270EX
or 261M6 |
| |
|
|
| Portaflex |
1650F |
270FX |
| |
|
|
| Portaflex |
125E |
261M6
budget version |
| |
|
|
| SVT |
1650W |
717
plate + 167S6 heater + 272DX |
| |
|
|
| Bassmaster |
1650N |
278X |
| |
|
|
| Custom
Special |
1650T |
278CX |
| |
|
|
| GuitarMate |
125E |
270FX |
| |
|
|
| Herzog |
125C
/ CSE |
261C6
or 261E6 |
| |
|
229B230
plate + 229A12 heaters |
| |
|
|
| Chain |
125E
+ 1650N |
278X
for amp depicted in figure 17-2 |
| |
|
|
| Laney |
1645 |
272JX |
MONO AMPLIFIERS
These sets use
the output transformer only up to its rated output.
SE Single-ended amps
| WRMS |
OT |
PT |
Tubes |
| 3W |
125A
/ASE |
269AX |
6V6,
EL84 |
| 5W |
125B
/BSE |
269AX |
6V6,
EL84, 6L6 |
| 8W |
125C
/CSE |
269GX |
6L6,
EL34 |
| 10W |
125D
/DSE |
269GX |
6L6,
EL34 |
| 15W |
125E
/ESE |
270DX |
KT88;
2x 6L6, EL34; 3x 6V6, EL84 |
| 25W |
1627SE |
274X |
2x
KT88; 3x 6L6GC, 6550; 4x 5881, EL34 |
| |
1628SE |
270HX |
811A;
2x KT88 |
| |
1629SE |
272FX |
811A;
2x KT88 |
| |
1640SE |
270FX |
2x
KT88; 3x 6L6GC, 6550; 4x 5881, EL34 |
| 75W |
1625SE |
278CX
+ 167T6 |
3x
811A as two mono blocks |
Push-pull amps
| WRMS |
OT |
PT |
Tubes |
| 3W |
125A |
261C6, 269AX |
2x 12AU7 |
| 5W |
125B |
269AX |
2x EL84, 6V6 |
| 8W |
125C |
269GX |
2x EL84, 6V6 |
| 10W |
125D |
269GX |
2x EL84, 6V6 |
| |
1608 |
269EX /GX |
2x EL84, 6V6 |
| |
1609 |
269GX |
2x EL84, 6V6 |
| 15W |
125E |
270DX |
2x EL84, 6V6,
6L6 |
| |
1615 |
270CAX |
2x 6L6 |
| |
1650E |
270DX |
2x 6V6, 6L6 |
| 20W |
1620 |
270CAX |
2x 6L6 |
| 25W |
1650F |
270EX |
2x 6L6, EL34 |
| 30W |
1639 |
273X /CX |
2x 6L6, EL34 |
| |
1645 |
272FX |
2x 6L6, EL34 |
| 35W |
1650G |
272FX |
2x 6L6, EL34 |
| 40W |
1650H |
276X |
2x 6L6, EL34 |
| 50W |
1650K /KP |
272JX |
2x 6L6, EL34 |
| 60W |
1650N |
272JX |
2x 6L6, EL34;
4x 6L6 |
| |
1650P /PP |
278X |
2x 6L6, EL34,
6550, KT88 |
| 100W |
1650R |
278CX |
2x 6550, KT88 |
| 120W |
1650T |
278CX |
4x 6L6, EL34,
6550, KT88 |
| 280W |
1650W |
711 plate +
167S6 |
6x 6550, KT88 |
STEREO AMPLIFIERS
Output transformers
are used only up to their ratings.
SE Single-ended amps
| WRMS |
OTx2 |
PT |
Tubes
(per channel) |
| 3W |
125A
/ASE |
261E6
/G6, 269AX |
6V6,
EL84 |
| 5W |
125B
/BSE |
261G6,
269AX |
6V6,
EL84, 6L6 |
| 8W |
125C
/CSE |
261M6,
270DAX |
6L6,
EL34 |
| 10W |
125D
/DSE |
270EX |
6L6,
EL34 |
| 15W |
125E
/ESE |
270FX,
272FX |
KT88;
2x 6L6, EL34; 3x 6V6, EL84 |
| 25W |
1627SE |
274BX |
2x
KT88; 3x 6L6GC, 6550; 4x 5881, EL34 |
| |
1628SE |
282X |
811A;
2x KT88 |
| |
1629SE |
272JX |
811A;
2x KT88 |
| |
1640SE |
272JX |
2x
KT88; 3x 6L6GC, 6550; 4x 5881, EL34 |
| 75W |
1625SE |
278CX
+ 167T6 |
3x
811A as two mono blocks |
Stereo Push-pull amps (WRMS
per channel)
| WRMS |
OTx2 |
PT |
Tubes |
| 3W |
125A |
269AX |
2x 12AU7 |
| 5W |
125B |
269JX |
2x EL84, 6V6 |
| 8W |
125C |
270DAX |
2x EL84, 6V6 |
| 10W |
125D |
270EX |
2x EL84, 6V6 |
| |
1608 |
261M6, 270DAX |
2x EL84, 6V6 |
| |
1609 |
261M6, 270DAX |
2x EL84, 6V6 |
| 15W |
125E |
270HX |
2x EL84, 6V6,
6L6 |
| |
1615 |
270FX |
2x 6L6 |
| |
1650E |
270FX |
2x 6V6, 6L6 |
| 20W |
1620 |
270HX |
2x 6L6 |
| 25W |
1650F |
272HX /JX |
2x 6L6, EL34 |
| 30W |
1639 |
274AX /BX |
2x 6L6, EL34 |
| |
1645 |
272JX |
2x 6L6, EL34 |
| 35W |
1650G |
272JX |
2x 6L6, EL34 |
| 40W |
1650H |
276X x2 |
2x 6L6, EL34
dual mono blocks** |
| 50W |
1650K /KP |
272JX x2 |
2x 6L6, EL34
dual mono blocks** |
| 60W |
1650N |
272JX x2 |
2x 6L6, EL34;
4x 6L6 dual mono blocks** |
| |
1650P /PP |
278CX |
2x 6L6, EL34,
6550, KT88 |
| 100W |
1650R |
278CX x2 |
2x 6550, KT88
dual mono blocks |
| 120W |
1650T |
278CX x2 |
4x 6L6, EL34,
6550, KT88 dual mono blocks |
| 280W |
1650W |
711 plate +
167S6 |
6x 6550, KT88
dual mono blocks |
**278CX has sufficient VA for two channels but excessive
voltage; regulation required
Extended operation for Musical Instrument Amplifiers
Output power is
increased by sacrificing low frequency response.
| WRMS |
OT |
PT |
Tubes |
| 50W |
1645 |
272JX |
2x
6L6, EL34 |
| 80W |
1650N |
278X |
2x
6L6, EL34, 6550 |
| 100W |
1650N |
278CX |
2x
6550, KT88; 4x 6L6, EL34 |
| 160W |
1650T |
278CX |
4x
6L6, EL34, 6550 |
| 200W |
1650T |
182M117
+ 182L60 + heater |
4x
KT88 |
| 400W |
1650W |
722
+ 167S12 |
4x
SV572-160, 811A |
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