Hammond Mfg. - "Classic" Push-Pull Potted - Tube Output Transformers

"Classic" Audio
Push-Pull, Ultra-Linear
Potted, Tube Output

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1650 Potted Picture

Key Features:

Designed for push-pull tube output circuits.
A perfect match to our potted power transformers (300P Series).
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:

Part Number	Dimensions (Inches)
Part Number	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:

***Secondary Connections***

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