Naylor Tube Bias Calculator
| Tube ID | Max TubeDissipation | Tube Dissipation at 70% Hot | Bias X 1 | Bias X 2 | Bias X 4 |
|---|---|---|---|---|---|
| 6L6 | 19 | 13.3 |
28.3 |
56.6 |
113.2 |
| 6L6GC | 30 | 21.0 |
44.7 |
89.4 |
178.7 |
| 5881 / 6L6WGC | 26 | 18.2 |
38.7 |
77.4 |
154.9 |
| KT66 | 25 | 17.5 |
37.2 |
74.5 |
148.9 |
| EL34 / KT77 | 25 | 17.5 |
37.2 |
74.5 |
148.9 |
| 6550 / KT88 | 35 | 24.5 |
52.1 |
104.3 |
208.5 |
| KT150 | 70 | 49 |
104.3 |
208.5 |
417.0 |
| Tube Dissipation at 60% Average | |||||
| 6L6 | 19 | 11.4 |
24.3 |
48.5 |
97.0 |
| 6L6GC | 30 | 18 |
38.3 |
76.6 |
153.2 |
| 5881 / 6L6WGC | 26 | 15.6 |
33.2 |
66.4 |
132.8 |
| KT66 | 25 | 15 |
31.9 |
63.8 |
127.7 |
| EL34 / KT77 | 25 | 15 |
31.9 |
63.8 |
127.7 |
| 6550 / KT88 | 35 | 21 |
44.7 |
89.4 |
178.7 |
| KT150 | 70 | 42 |
89.4 |
178.7 |
357.4 |
| Tube Dissipation at 50% Cool | |||||
| 6L6 | 19 | 9.5 |
20.2 |
40.4 |
80.9 |
| 6L6GC | 30 | 15 |
31.9 |
63.8 |
127.7 |
| 5881 / 6L6WGC | 26 | 13 |
27.7 |
55.3 |
110.6 |
| KT66 | 25 | 12.5 |
26.6 |
53.2 |
106.4 |
| EL34 / KT77 | 25 | 12.5 |
26.6 |
53.2 |
106.4 |
| 6550 / KT88 | 35 | 17.5 |
37.2 |
74.5 |
148.9 |
| KT150 | 70 | 35 |
74.5 |
148.9 |
297.9 |