Universal Push Pull Tube Output Transformers

Author: kevin M  Date Posted:3 November 2017 

Universal Push Pull Tube Output Transformers

Below is a list of various Push-Pull Transformers for Tube Amps along with specifications required for a decision when building your amp project however for more information such as dimensional data please search the product on the site.

If you cannot find the item you wish to purchase on our website then simply send us an email to info@evatco.com.au.

Universal Push - Pull  Tube Output
Part No. Audio Watts Max DC BIAS Per Side (mA) Pmary Inductance
125A 3 20 14.94 H
125B 5 35 8.97 H
125C 8 45 5.60 H
125D 10 55 4.48 H
125E 15 60 2.99 H

Hook-Up Data
Connect Voice Coil Impedance (Ohms)
Speaker To 1.5 2 3.2 4 6 8 12 15
(Secondary Lugs) Resulting Total Primary Impedance (Below), Blue Wire to Brown Wire
1 & 2 27000 - - - - - - -
2 & 3 18000 24000 - - - - - -
3 & 4 16500 22000 - - - - - -
4 & 5 10000 13500 21600 27000 - - - -
5 & 6 8500 11000 18000 22000 - - - -
1 & 3 5400 7200 11500 15000 21600 - - -
2 & 4 4200 5600 9000 11200 16800 22500 - -
3 & 5 3300 4400 7000 8800 13200 17600 26400 -
4 & 6 2400 3200 5100 6400 9600 12800 19200 24000
1 & 4 2150 2900 4600 5800 8700 11600 17400 21500
2 & 5 1550 2050 3300 4100 6150 8200 12300 15500
3 & 6 1300 1700 2700 3400 5100 6800 10200 12800
1 & 5 - 1400 2200 2800 4200 5600 8400 10200
2 & 6 - - 1700 2100 3150 4200 6300 8000
1 & 6 - - 1200 1500 2300 3000 4500 5600
 

General Replacement Tube Output (8 Watt) Push-Pull
Part No. Audio Watts Primary Impedance (Ohms) Secondary Impedance (ohms) Primary Inductance
125H 8 10K 2, 4 or 8 5.60 H
 
Part No. Audio Watts Primary Impedance (Ohms) Secondary Impedance (ohms) Primary Inductance
125J 8 2.5K or 4K 6/8 or 3.2/4 5.60 H

 
PRIMARY IMPEDANCE    
Plate to Plate    
Brown to Blue SECONDARY IMPEDANCE USE SECONDARY
(Ohms) (Ohms) LEAD CONNECTIONS
4,000 C.T. 41857 WHT - GRN
4,000 C.T. 3.2 / 4 WHT -YEL
2,500 C.T. 41857 BLK - GRN
2,500 C.T. 3.2 / 4 BLK - YEL
 
 
Part No. Audio Watts (RMS) Primary Impedance (Ohms) Maximum DC Per Side Secondary Impedance  (ohms)
1608 10 8,000 ct 100 ma. 4 - 8 - 16
1609 10 10,000 ct 100 ma. 4 - 8 - 16
1615 15 5,000 ct 100 ma. 4 - 8 - 16
1620 20 6,600 ct 158 ma. 4 - 8 - 16
1650F 25 7,600 ct 128 ma. 4 - 8 - 16
1645 30 5,000 ct 128 ma. 4 - 8 - 16 - 70V
1650H 40 6,600 ct 200 ma. 4 - 8 - 16
1650K 50 3,400 ct 318 ma. 4 - 8 - 16
*1650M 60 1,400CT/800CT 318 ma. 4 - 8 - 16
1650N 60 4,300 ct 318 ma. 4 - 8 - 16
1650P 60 6,600 ct 200 ma. 4 - 8 - 16
1650R 100 5,000 ct 318 ma. 4 - 8 - 16
1650T 120 1,900 ct 403 ma. 4 - 8 - 16
1650W 280 1,900 ct 806 ma. 4 - 8 - 16
Part No. Audio Watts (R.M.S) Primary
Impedance
(Ohms)		 Operation Suggested Tube Types
1608 10 8,000 ct Push-Pull (2 Tubes) 6AQ5, 6V6, 6BQ5, EL84, SV83
1609 10 10,000 ct Push-Pull (2 Tubes) 6AQ5, 6V6, 6BQ5, EL84, SV83
1615 15 5,000 ct Push-Pull (2 Tubes) 2A3, 6A3, 6AQ5, 6B4G, 6L6, 6V6
1620 20 6,600 ct Push-Pull (2 Tubes) 6AQ5, 6L6, 6V6
1650F 25 7,600 ct Push-Pull (2 Tubes) 6L6GC, 6V6, 807, 5881, EL34
1645 30 5,000 ct Push-Pull (2 Tubes) 6L6GC, 6V6, 807, 5881, EL34
1650H 40 6,600 ct Push-Pull (2 Tubes) 6L6GC, 807, 5881, EL34
1650K 50 3,400 ct Push-Pull Par. (4 Tubes) 6L6GC, 807, 5881, EL34, 6146B, 6550B
1650N 60 4,300 ct Push-Pull Par. (2 or 4 Tubes) 6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
1650P 60 6,600 ct Push-Pull (2 Tubes) 6L6GC, 807, 5881, EL34, 6146B, 6550B, KT88
1650R 100 5,000 ct Push-Pull Par. (2 or 4 Tubes) 807, 5881, EL34, 6146B, 6550B, KT88
1650T 120 1,900 ct Push-Pull Par. (4 or 6 Tubes) 6L6GC, 5881, EL34, 6550B, KT88
1650W 280 1,900 ct Push-Pull Par. (6 or 8 Tubes) 6L6GC, 5881, EL34, 6550B, KT88
Part No. Audio Watts (RMS) Primary Impedance (Ohms) Maximum DC Per Side Secondary Impedance  (ohms)
1608A 10 8,000 ct 100 ma. 4 - 8 - 16
1609A 10 10,000 ct 100 ma. 4 - 8 - 16
1615A 15 5,000 ct 100 ma. 4 - 8 - 16
1650E 15 8,000 ct 100 ma. 4 - 8 - 16
1620A 20 6,600 ct 158 ma. 4 - 8 - 16
1650FA 25 7,600 ct 128 ma. 4 - 8 - 16
1645A 30 5,000 ct 128 ma. 4-8-16-70V
1650G 35 6,600 ct 200 ma. 3.5/8/16/250/500
1650HA 40 6,600 ct 200 ma. 4 - 8 - 16
1650KA 50 3,400 ct 318 ma. 4 - 8 - 16
1650NA 60 4,300 ct 318 ma. 4 - 8 - 16
1650PA 60 6,600 ct 200 ma. 4 - 8 - 16
1650RA 100 5,000 ct 318 ma. 4 - 8 - 16
1650TA 120 1,900 ct 403 ma. 4 - 8 - 16
1650WA 280 1,900 ct 806 ma. 4 - 8 - 16
Part No. Audio Watts (R.M.S) Primary Impedance (Ohms) Operation Suggested Tube Types
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
Part No. Audio Watts (RMS) Primary Impedance (Ohms) Maximum DC Per Side Secondary Impedance  (ohms)
1650KP 50 3400 ct 318 ma. 4 - 8 - 16
1650PP 60 6600 ct 200 ma. 4 - 8 - 16
1650PAP 60 6600 ct 200 ma. 4 - 8 - 16
1650RP 100 5000 ct 317 ma. 4 - 8 - 16
Part No. Audio Watts (R.M.S) 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