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Push-Pull Ultra Linear Tube Potted Output

1650 Potted Picture 

 

Key Features

 

  • Designed for push-pull tube output circuits.
  • 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.

 

Part Number

Audio
Watts

Primary Impedance
(Ohms)

Max. DC Per Side

Secondary Impedance
(Ohms)

Weight
(lbs.)

1650KP 50 3400 ct
318 ma.
4/8/16 9
1650PP 60 6600 ct
200 ma.
4/8/16 10
1650RP 100 5000 ct
317 ma.
4/8/16 13

 

Suggested Tube Types

 

Part Number

Audio
Watts

Primary Impedance
(Ohms)

Suggested Tube Types

1650KP 50 3400 ct 6L6GC, 807, 5881, EL34, 6146B, 6550B
1650PP 60 6600 ct 6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
1650RP 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 tube manufacturer's technical data sheets should be consulted first, before making a decision on a proper output transformer.

 

Mechanical Data

 

1650 Potted (Side View)
1650 Potted (Bottom View)

 

 


Part Number

Dimensions
(Inches)

A

B

C

D

E

F

G

1650KP
3.31
3.88
4.25
2.5
3
3.31
2.56
1650PP
3.31
3.88
4.25
2.5
3
3.31
2.56
1650RP
4.25
5
4.50
3.38
4.25
4.5
3.75

 

 

Schematic & Hook Up Data

 

1650 Potted Schematic

 

 

Secondary Connections

 

 Secondary Schematic (4 Ohm)

 

Secondary Schematic (8 Ohm)

 

Secondary Schematic (16 Ohm)
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