Suggested Tube Types:
Part No.
Audio Primary Impedance
Suggested Tube TypesWatts (Ohms)
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
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
Part No.
Audio Primary Impedance Max. DC Secondary Impedance Dimensions Weight
Watts (Ohms) Per Side (Ohms) A B C D E F G (lbs.)
1650KP 50 3400 ct 318 ma. 42468 3.31 3.88 4.25 2.50 3.00 3.31 2.56 9
1650PP 60 6600 ct 200 ma. 42468 3.31 3.88 4.25 2.50 3.00 3.31 2.56 10
1650RP 100 5000 ct 317 ma. 42468 4.25 5.00 4.50 3.38 4.25 4.50 3.75 13
