Low gain, low output, and impaired frequency response are all di-
rectly related to tube mutual conductance and power supply output
voltage. Consequently, should any of the above symptoms appear,
the power supply output voltages should be checked (Paragraph 3-3)
and the tubes should be checked (Paragraph 3 -2).
Impaired frequency response, low gain, and/or excessive hum can
also be caused by open or shorted coils and by defective terminat-
ing resistors or screen resistors.
The can of electrolytic capacitor C9 is insulated from the chassis.
If this capacitor is shorted to the chassis the bias voltage will also
The bias voltage is normally not more than about 1. 8
volts and is not dangerous to personnel but tube damage can result
if this voltage is removed.
REPLACEMENT OF 200 OHM CABLE CONNECTOR
Connect 200 ohm cable to length desired.
Trim end of cable
to a point where shielding and outer ins ulation are even with
the end of a center conductor support bead.
cable length to tip of banana plug will be approximately 1/4"
shorter than trimmed cable length.
FRONT PLUG ASSEMBLY
CONICAL WASHER 146A-16Kl
REAR PLUG BODY
' - - - - . , - - - - J
OUTER INSULAT ION
·0· RING 1432-40)
II OR 2. SEE TEXTI
, 2 · (SEE TEXTll
(46A -16H I
200 OHM CABL E
(812 - 52)
LO - .. - 52
Exploded View of the 46A-95B Assembly
Remove outer cable insulation for a distance of 2" from cable
Remove three support beads from center conductor.
this, upset shielding just enough to release beads.