Tube-number record
4058-B
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BrandStandard Valves
ClassTriode
BaseSpecial / none
Construction
Primary TypeTriode
EnvelopeGlass/Metal (Water Cooled)
Base MaterialSide terminal grid
Sectionssingle
Filament / Heater
MaterialPure tungsten
Absolute Maximum Ratings
Plate Voltage14000 V
Plate Dissipation12000 W
Grid 1 Voltage-1750 V
Cathode Current2500 mA
Audio Performance
Power Output26400 W
Key Features
- Water cooled
- Pure tungsten filament
- Single ended
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class B A.F. Amp | 12000 V | 5400 | 4800 | 26 | 400 mA |
| Class B Telephony | 12000 V | 5400 | 4800 | 26 | 1250 mA |
| Class C Telephony | 8000 V | 5400 | 4800 | 26 | 1250 mA |
Application Notes
Replaces the 4058-A valve which has now been abandoned. The characteristics are identical but the grid lead has been brought out through the side of the bulb.
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