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Hammond 16XX-Series
- NEW & IMPROVED
versions, higher power handling, smoother frequency response, two new impedances
added & easy to use secondary taps.
- "Over designed"
for single ended, Class-A, tube output circuits (triode, tetrode or pentode
tubes).
- Enclosed (shielded),
four slot, chassis Type "X" mounting.
- Frequency response at
least 20 Hz. to 20 Khz. at full rated power (+/- 1 db max., ref. 1 Khz.)
- Insulated flexible leads
8" min.
- For maximum versatility,
all units (except the 1642SE & 1638SEA) include a 40% screen tap for Ultra-Linear,
tetrode/pentode operation (if desired). The 1642SE & 1638SEA do NOT include
this screen tap as they were designed principally for high impedance triode
tubes.
- High quality laminations,
(M6) grain oriented silicon steel.
- Core is gapped to reduce
core saturation in Class-A circuits.
- For general purpose
or replacement use in single ended tube output circuits see our 125SE
series.
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Part No.
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Audio Watts
|
Primary
|
Ultra-Linear
40% Primary
Tap
|
Secondary
Impedance
|
Hipot
Test
(VRMS)
|
Wt. Lbs.
|
|
Impedance
|
Max. DC Bias
|
|
1640SEA
|
30
|
1,250
|
200 ma.
|
Yes |
4-8-16
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2,000
|
11
|
|
1627SEA
|
30
|
2,500
|
160 ma.
|
Yes |
4-8-16
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2,000
|
11
|
|
1630SEA
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30 |
3,500 |
135 ma. |
Yes |
4-8-16 |
2,000 |
11 |
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1628SEA
|
30
|
5,000
|
120 ma.
|
Yes |
4-8-16
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2,000
|
11
|
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1642SE
|
75 |
5,000 |
300 ma. |
No |
4-8-16 |
3,500
|
28 |
|
1629SEA
|
30
|
6,500
|
100 ma.
|
Yes |
4-8-16
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2,000
|
11
|
|
1638SEA
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30 |
10,000 |
90 ma. |
No |
4-8-16 |
2,000
|
11 |
Suggested Tube Types:
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Part No.
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Triodes
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Pentodes
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|
1640SEA
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Parallel - 2A3, 6A3, 6B4G, 300B, 572B, 811A
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Parallel - 6550, 6CA7
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1627SEA
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2A3, 6A3, 6B4G, 300B
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6CA7, 6L6, 807, 5881, 6550,
Parallel - 6AQ5, 6V6, EL84
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1630SEA
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2A3, 6A3, 6B4G, 300B
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6CA7, 6L6, 807, 5881, 6550,
Parallel - 6AQ5, 6V6, EL84
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1628SEA
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211, 300B, 572B, 811A
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6AQ5, 6V6, 6L6, 807, 5881, 6550, EL84
|
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1642SE
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Parallel - 211, 572, 811A, 845
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-
|
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1629SEA
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211, 811A, 572B, 845
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6AQ5, 6V6, 6L6, 807, 5881, 6550, EL84
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1638SEA
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211, 845
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-
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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 (ultra-linear, bias, plate voltage,
operating points, etc.) will change optimum plate load impedance. Only a few
of the most popular tubes are shown. A tube manual or tube manufacturer's technical
data sheets should be consulted first, before making a decision on a proper
output transformer
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