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 |
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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 |
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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 |
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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 |
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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 |