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

Units shown: inch. Switch units to: mm

Part No. Audio Primary Maximum Secondary Dimensions Weight
Watts 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
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

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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

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Data subject to change without notice.