1620A Datasheet 1620A | P1-P2

Tube Output (10 - 280 Watts) Easy Wire Secondary

1608A-1650A

Series

Push-Pull - HI-FI

Features

NEW & improved version of our 1608-1650 Series multiple secondary

output transformers (re-designed secondaries for easy hook-up of

secondary loads).

Designed for push-pull tube output circuits.

Units are designed to provide ample "headroom" at bass frequencies (note

the weight of each transformer).

All models have a secondary tapped for 4, 8 or 16 ohm outputs.

Enclosed (shielded), 4 slot, above chassis Type "X" mounting.

Manufactured with plastic coil forms for coil support and insulation.

Frequency response 30 Hz. to 30 Khz. at full rated power (+/- 1 db max. -

ref. 1 Khz) minimum.

Insulated flexible leads 8" min.

All units (except the 1650G) include 40% screen taps for Ultra-Linear

operation (if desired).

Typical applications - Push-Pull: triode, Ultra-Linear pentode, pentode and

tetrode connected audio output. The 1650G does NOT have primary

screen taps and will not support "Ultra-Linear" applications.

Gallery

Part No.

Audio Primary Maximum Secondary Dimensions

WeightWatts Impedance DC Impedance

A B C D

E G

(RMS) (Ohms) Per Side (Ohms) +/- 1/16" Slot (lbs.)

1608A 10 8,000 ct 100 ma. 4-8-16 2.50 2.75 3.06 2.00 1.69 0.20 x 0.38 2.5

1609A 10 10,000 ct 100 ma. 4-8-16 2.50 2.75 3.06 2.00 1.69 0.20 x 0.38 2.5

1615A 15 5,000 ct 100 ma. 4-8-16 2.50 3.25 3.06 2.00 2.19 0.20 x 0.38 3.25

1650E 15 8,000 ct 100 ma. 4-8-16 2.50 3.25 3.06 2.00 2.50 0.20 x 0.38 3.5

1620A 20 6,600 ct 158 ma. 4-8-16 2.50 3.50 3.06 2.00 2.44 0.20 x 0.38 3.5

1650FA 25 7,600 ct 128 ma. 4-8-16 2.50 3.50 3.06 2.00 2.44 0.20 x 0.38 4

1645A 30 5,000 ct 128 ma. 4-8-16-70V 2.50 3.75 3.06 2.00 2.69 0.20 x 0.38 4.5

1650G 35 6,600 ct 200 ma. 3.5/8/16/250/500 3.13 3.75 3.81 2.50 2.25 0.20 x 0.38 5

1650HA 40 6,600 ct 200 ma. 4-8-16 3.13 4.00 3.81 2.50 2.69 0.20 x 0.38 6.5

1650KA 50 3,400 ct 318 ma. 4-8-16 3.13 4.00 3.81 2.50 2.69 0.20 x 0.38 7

1650NA 60 4,300 ct 318 ma. 4-8-16 3.13 4.25 3.81 2.50 2.94 0.20 x 0.38 8

1650PA 60 6,600 ct 200 ma. 4-8-16 3.13 4.25 3.81 2.50 2.94 0.20 x 0.38 8

1650RA 100 5,000 ct 318 ma. 4-8-16 3.75 4.25 4.56 3.00 3.06 0.20 x 0.38 12

Quality Products. Service Excellence.

Data subject to change without notice.

1650TA 120 1,900 ct 403 ma. 4-8-16 3.75 4.50 4.56 3.00 3.31 0.20 x 0.38 14

1650WA 280 1,900 ct 806 ma. 4-8-16 4.38 7.50 5.25 3.50 5.88 0.20 x 0.38 28

Part No.

Audio Primary Maximum Secondary Dimensions

WeightWatts Impedance DC Impedance

A B C D

E G

(RMS) (Ohms) Per Side (Ohms) +/- 1/16" Slot (lbs.)

Suggested Tube Types

Part No.

Audio Primary

Operation Suggested Tube Types

Watts Impedance

(R.M.S.) (Ohms)

1608A 10 8,000 ct Push-Pull (2 Tubes) 6AQ5, 6V6, 6BQ5, EL84, SV83

1609A 10 10,000 ct Push-Pull (2 Tubes) 6AQ5, 6V6, 6BQ5, EL84, SV83

1615A 15 5,000 ct Push-Pull (2 Tubes) 2A3, 6A3, 6AQ5, 6B4G, 6L6, 6V6

1650E 15 8,000 ct Push-Pull (2 Tubes) 6AQ5, 6V6, 6BQ5, EL84, SV83

1620A 20 6,600 ct Push-Pull (2 Tubes) 6AQ5, 6L6, 6V6

1650FA 25 7,600 ct Push-Pull (2 Tubes) 6L6GC, 6V6, 807, 5881, EL34

1645A 30 5,000 ct Push-Pull (2 Tubes) 6L6GC, 6V6, 807, 5881, EL34

1650G 35 6,600 ct Push-Pull (2 Tubes) 6L6GC, 807, 5881, EL34

1650HA 40 6,600 ct Push-Pull (2 Tubes) 6L6GC, 807, 5881, EL34

1650KA 50 3,400 ct Push-Pull Par. (4 Tubes) 6L6GC, 807, 5881, EL34, 6146B, 6550B

1650NA 60 4,300 ct Push-Pull Par. (2 or 4 Tubes) 6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88

1650PA 60 6,600 ct Push-Pull (2 Tubes) 6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88

1650RA 100 5,000 ct Push-Pull Par. (2 or 4 Tubes) 807, 5881, EL34, 6146B, 6550B, KT88

1650TA 120 1,900 ct Push-Pull Par. (4 or 6 Tubes) 6L6GC, 5881, EL34, 6550B, KT88

1650WA 280 1,900 ct Push-Pull Par. (6 or 8 Tubes) 6L6GC, 5881, EL34, 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.

P1-P2

1620A

Mfr. #:

Buy 1620A

Manufacturer:

Hammond Manufacturing

Description:

Audio Transformers / Signal Transformers PushPull Tube Output Audio RMS 20W

Lifecycle:

New from this manufacturer.

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1620A