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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