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6M6

Power-amplifier pentode designed for single-ended Class-A and push-pull Class-AB audio output service. Its operating characteristics support conventional loudspeaker-driving output stages.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: 9N
Socket code: B9A
Base pins: 9
Nominal heater: 6.3 V / 710 mA

Description

Power-amplifier pentode for single-ended Class-A and push-pull Class-AB audio output service.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: 9N
Socket code: B9A
Base pins: 9
Nominal heater voltage: 6.3 V
Nominal heater current: 710 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9N - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

Max plate voltage: 300 V
Max screen voltage: 300 V

Promoted from printed maximum-rating/characteristic columns; additional published operating points and capacitances retained as parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

195X General Electric Essential Characteristics

Published operating points and test conditions from this source.

SECTION 1

Pentode

Other

Plate voltage
250 V
ClassA
Screen voltage
250 V
ClassA
Load resistance
7000 Ω
OneTube
Power output
3.9 W
OneTube
Load resistance
7000 Ω
ClassAB PushPull TwoTubes
Power output
9.4 W
ClassAB PushPull TwoTubes