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Transcript
TECHNICAL DATA 12BH7A-STR TAD Premium Selected High Performance Medium-Mu Twin Triode The all-new TAD 12BH7A-STR combines the best sonic and mechanic performance of the NOS RCA black plate with the GE version. A maximum of reliability with outrageous tonal quality makes the new TAD 12BH7A-STR the first choice for guitar, bass guitar and HiFi audio applications. Defined Bass, powerful midrange and shiny treble response provides superb voice. The TAD 12BH7A-STR comes Premium Selected with balanced systems for superior sonic service. Characteristics of a bogey tube: Electrical Heater: Voltage (AC or DC) Current Heating Cathode-to-heater potential, max. Direct interelectrode capacitances, max. Grid to plate Grid to cathode Grid to heater Plate to cathode Balanced Systems rated Mechanical Operating Position Base Dimensions: Height Seated height Diameter Cooling Approximate net weight AF Power Amplifier: Maximum ratings: DC plate voltage DC plate voltage on vertical deflection amplifier Positive DC Grid Voltage Negative DC Grid Voltage DC cathode current Plate dissipation Grid Circuit resistor: Fixed Bias Cathode Bias Typical Operation: Class A amplifier (each section) DC plate voltage Grid Voltage Amplification factor Plate resistance Transconductance Plate current Outline View Series 12.6V +/-1.0 0.3 Parallel 6.3+/-0.5 0.6 Indirect 100V 2.5pF 2.9pF 2.9pF 0.5pF 5% Any E9-1, Small Buton 9 Pin 73 mm 66 mm 22.5 mm conventional 16 g 330 V 500 V 0V -50 V 20 mA 3.5 W 250KΩ 1MΩ 250 V -10.5 V ~17 ~5.4k ~3100mS ~11mA Bottom View Octal Base Connections Page 1 Version 1.1 31.01.2013