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

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D.P./PEN.

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BrandCossor
ClassMains Output Pentode
Filament16 V @ 250 mA

Construction

Primary TypePentode
SectionsSingle

Filament / Heater

Heater NotesIndirectly heated, intended for series wiring

Absolute Maximum Ratings

Plate Voltage250 V
Grid 2 Voltage250 V

Audio Performance

Key Features
  • Indirectly heated
  • D.C. mains operation
  • Capable of delivering big undistorted volume

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Characteristics100 V3500———
Typical Operation200 V———30 mA

Application Notes

Specifically designed for moving coil loudspeakers. For moving iron loudspeakers, a tone corrector should be employed. Screen voltage should never exceed the anode voltage.

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