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7591 Westinghouse branded as Harmon Kardon used/65% 1960-1963 (40ma, Gm=6500)

7591 Westinghouse branded as Harmon Kardon used/65% 1960-1963 (40ma, Gm=6500)

$ 39.99

1 tube) 7591 Westinghouse branded as Harmon Kardon used/65% 1960-1963

Tested on AMplitrex

1 tube) 40ma Gm=6500

Vplate=300V

Vscreen=300V

Vgrid=-10V

Good Ma used = 40-50ma

Good Gm used = 8000-9000

 

Recommended for

AUDIO GUILD CORP BONHAM 330 1960's
Ampeg Gemini II G-15
Ampeg Reverberocket II 1960's
McIntosh 225
Mcintosh MA230 early 60's
McIntosh MAC-1500 1965
Scott
Harmon Kardon
Fisher Receivers
Sansui
Sherwood S5000II

McIntosh 225
Fisher 500C 1964
Scott 299C
Scott LK-72
Scott 340B 1964
Univox U305R
Sansui 1000a 1970
Eico ST-70

 

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