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Tube Database (7,341 tube types · 1,270 archive entries)

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6BM8

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BrandSvetlana
ClassAudio Power Pentode / Triode
BaseNoval (B9A)
Filament6.3 V @ 780 mA

Construction

Primary TypeDual triode
EnvelopeGlass
Sections2

Filament / Heater

Heater NotesIndirectly-heated oxide cathode

Absolute Maximum Ratings

Plate Voltage600 V
Plate Dissipation7 W
Grid 2 Voltage300 V
Cathode Current50 mA
H-C Voltage100 V

Audio Performance

Power Output1.8 W
Key Features
  • High performance audio
  • Dual package contains power pentode and triode
  • Low power mono block amplifier capability
  • Excellent ultra linear configuration choice
  • Direct replacement for ECL82

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Triode Section300 V2500150000701.1 mA
Pentode Section300 V640070009.540 mA

Application Notes

The Svetlana 6BM8 is ideal for economical low-power mono block amplifiers or as a driver for higher power tubes like the SV811 or SV572 series triodes. Its indirectly-heated cathode can be DC operated to minimize hum and noise.

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