Impedance Chart for Output Transformers
Impedance Chart for Output Transformers
This table can be used as a guide only and we hold no responsibility for use
| Primary Load Impedance | 18,000 | 14,000 | 10,000 | 8,000 | 7,000 | 5,000 | 4,000 | 2,000 |
| Single Ended Class A |
1F4 | 1J5 | 6G6 | 1C5 | 2A5 | 3B5 | 6AC5 | 2A3 |
| 1F5 | 1LB4 | 19 | 1G5 | 6F6 | 6AQ5 | 12A4 | 6Y6 | |
| 1T5 | 41 | 1Q5 | 12A | 6L6 | 43 | 7A5 | ||
| 10 | 49 | 1S4 | 42 | 6V6 | 45 | 25L6 | ||
| 12A | 3Q5 | 47 | 7C5 | 117L7 | 35A5 | |||
| 12A7 | 3S4 | 12A5 | 35B5 | |||||
| 38 | 6K6 | 14C5 | 35L6 | |||||
| 6A4 | 50 | 48 | ||||||
| 7A5 | 71A | 50A5 | ||||||
| 7B5 | 50B5 | |||||||
| 12A6 | 50L6 | |||||||
| 14A5 | ||||||||
| Push Pull Plate to Plate |
6K6 | 6AQ5 | 6V6 | 2A3 | ||||
| 47 | 6F6 | 12A5 | 45 | |||||
| 6L6 | 50 | |||||||
| 6V6 | 71A | |||||||
| 42 |