10/6/22, 12:47 PM
Tube Output (50 - 100 Watts) (1650P Series) - Hammond Mfg.
Quality Products. Service Excellence.
Tube Output (50 - 100 Watts) 1650P Series
Push-Pull HI-FI Potted
Features
Designed for push-pull tube output circuits.
A perfect match to our 300P potted power transformers.
Enclosed in a drawn steel case, the transformer is completely potted in epoxy.
Frequency response 30 Hz. to 30 Khz. at full rated power (+/- 1 db max. ref. 1 Khz)
minimum.
Lead connection is via 10 bottom mounted lugs.
All units include 40% screen taps for Ultra-Linear operation (if desired).
Finished in a black powder paint (to match our 300P series power transformers).
Typical applications - Push-Pull: triode, Ultra-Linear pentode, pentode and tetrode
connected audio output.
Gallery
Audio
Primary Impedance
Max. DC
Secondary Impedance
Part No.
Watts
(Ohms)
Per Side
(Ohms)
Dimensions
A
B
C
D
E
F
Weight
G
(lbs.)
9
1650KP
50
3400 ct
318 ma.
4/8/16
3.31 3.88 4.25 2.50 3.00 3.31
2.56
1650KAP
50
3400 ct
318 ma.
4/8/16
3.31 3.88 4.25 2.50 3.00 3.31
1/4-20 x 0.5" Deep Inserts
9
1650PAP
60
6600 ct
200 ma.
4/8/16
3.31 3.88 4.25 2.50 3.00 1.50
1/4-20 x 0.5" Deep Inserts
10
1650RP
100
5000 ct
317 ma.
4/8/16
4.25 5.00 4.50 3.38 4.25 4.50
3.75
13
1650RAP
100
5000 ct
317 ma.
4/8/16
4.25 5.00 4.50 3.38 4.25 4.50
1/4-20 x 0.5" Deep Inserts
13
Suggested Tube Types:
Audio
Primary Impedance
Part No.
Watts
(Ohms)
Suggested Tube Types
6L6GC, 807, 5881, EL34, 6146B, 6550B
1650KP
50
3400 ct
1650KAP
50
3400 ct
6L6GC, 807, 5881, EL34, 6146B, 6550B
1650PAP
60
6600 ct
6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
1650RP
100
5000 ct
807, 5881, EL34, 6146B, 6550B, KT88
1650RAP
100
5000 ct
807, 5881, EL34, 6146B, 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
https://www.hammfg.com/electronics/transformers/classic/1650p
1/2
10/6/22, 12:47 PM
Tube Output (50 - 100 Watts) (1650P Series) - Hammond Mfg.
tube manufacturer's technical data sheets should be consulted first, before making a decision on a proper
output transformer.
Data subject to change without notice
© 2022. Hammond Manufacturing Ltd. All rights reserved.
https://www.hammfg.com/electronics/transformers/classic/1650p
2/2
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