Key Features
Part Number (click for price and to order) |
Audio Watts |
Primary Impedance |
Max. DC
Per Side |
Secondary Impedance |
Weight |
1608 |
10
|
8,000 ct
|
100 ma.
|
4-8-16
|
2.5
|
1609 |
10
|
10,000 ct
|
100 ma.
|
4-8-16
|
2.5
|
1615 |
15
|
5,000 ct
|
100 ma.
|
4-8-16
|
3.25
|
1620 |
20
|
6,600 ct
|
158 ma.
|
4-8-16
|
3.5
|
1650F |
25
|
7,600 ct
|
128 ma.
|
4-8-16
|
4
|
1645 |
30
|
5,000 ct
|
128 ma.
|
4-8-16-70V
|
4.5
|
1650H |
40
|
6,600 ct
|
200 ma.
|
4-8-16
|
6.5
|
1650K |
50
|
3,400 ct
|
318 ma.
|
4-8-16
|
7
|
1650N |
60
|
4,300 ct
|
318 ma.
|
4-8-16
|
8
|
1650P |
60
|
6,600 ct
|
200 ma.
|
4-8-16
|
8
|
1650R |
100
|
5,000 ct
|
318 ma.
|
4-8-16
|
12
|
1650T |
120
|
1,900 ct
|
403 ma.
|
4-8-16
|
14
|
1650W |
280
|
1,900 ct
|
806 ma.
|
4-8-16
|
28
|
Suggested Tube Types
Part Number |
Audio Watts (RMS) |
Primary |
Operation
|
Suggested Tube Types |
1608 |
10
|
8,000 ct
|
Push-Pull (2 Tubes) |
6AQ5, 6V6, 6BQ5, EL84, SV83
|
1609 |
10
|
10,000 ct
|
Push-Pull (2 Tubes) |
6AQ5, 6V6, 6BQ5, EL84, SV83
|
1615 |
15
|
5,000 ct
|
Push-Pull (2 Tubes) |
2A3, 6A3, 6AQ5, 6B4G, 6L6, 6V6
|
1620 |
20
|
6,600 ct
|
Push-Pull (2 Tubes) |
6AQ5, 6L6, 6V6
|
1650F |
25
|
7,600 ct
|
Push-Pull (2 Tubes) |
6L6GC, 6V6, 807, 5881, EL34
|
1645 |
30
|
5,000 ct
|
Push-Pull (2 Tubes) |
6L6GC, 6V6, 807, 5881, EL34
|
1650H |
40
|
6,600 ct
|
Push-Pull (2 Tubes) |
6L6GC, 807, 5881, EL34
|
1650K |
50
|
3,400 ct
|
Push-Pull Par. (4 Tubes) |
6L6GC, 807, 5881, EL34, 6146B, 6550B
|
1650N |
60
|
4,300 ct
|
Push-Pull Par. (2 or 4 Tubes) |
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
|
1650P |
60
|
6,600 ct
|
Push-Pull (2 Tubes) |
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
|
1650R |
100
|
5,000 ct
|
Push-Pull Par. (2 or 4 Tubes) |
807, 5881, EL34, 6146B, 6550B, KT88
|
1650T |
120
|
1,900 ct
|
Push-Pull Par. (4 or 6 Tubes) |
6L6GC, 5881, EL34, 6550B, KT88
|
1650W |
280
|
1,900 ct
|
Push-Pull Par. (6 or 8 Tubes) |
6L6GC, 5881, EL34, 6550B, KT88
|
Notes: The above examples of possible combinations are to help you narrow down the choices of transformers for your favorite tube types. How you operate the tubes (push-pull, push-pull parallel, ultra-linear, class, B+, bias, operating points, etc.) will change optimum plate to plate load impedance. Only a few of the most popular tubes are shown. As more tubes become available we will add them to the list.
A tube manual or tube manufacturer's technical data sheets should be consulted first, before making a decision on a proper output transformer.
Mechanical Data
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Schematic & Hook Up Data (all models except 1645 - see below)
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Schematic & Hook Up Data (1645 only)
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