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OUTPUTS
(A)
One 500/600 -ohm line
(8)
Three 15 -ohm monitor lines
(C)
One high -impedance headphone output
(2,000 to 5,000 -ohms)
LINE OUTPUT NOISE LEVEL
At Normal
(72 db) Gain
60 db below Normal Output
16 db.")
DISTORTION
(A)
Microphone Input to Line Output:
0.5% r.m.s. Harmonic Distortion
from 50 to 7,000 cycles, with normal
output of +16 db"
(B)
Microphone Input to Monitor Output:
4.0% r.m.s
Harmonic Distortion from
50 to 7,000 cycles, with 8.0 watts
output.
2.
GENERAL DESCRIPTION
FREQUENCY RESPONSE
(A)
Microphone Input to Line Output:
± 2.0 db 30 to 15,000 cycles.
(B)
Microphone Input to Monitor Output:
+ 2 db from 30 to 15,000 cycles
(Audition Channel)
MONITOR POWER OUTPUT
(A)
(8)
4.0 Watts (+36 db") with 2% r.m.s.
Harmonic Distortion from 50 to 7.000
cycles.
8.0 Watts (+39 db") with 4% r.m.s.
Harmonic Distortion from 50 to 7,000
cycles.
PHYSICAL SPECIFICATIONS
(Overall)
Width
-
39
inches
Depth
-
17
Inches
Height
-
104
Inches
Weight
- 135
Pounds (Unpacked)
The Type 76-62 Consolette has been designed for use in Broadcast Speech Input Installations to pro-
vide a complete and flexible system in one conveniently arranged control cabinet.
All the necessary
functions of switching, mixing, and amplifying the audio outputs of microphones, transcription turn-
tables, or remote lines, auditioning, and monitoring are accomplished in a single consolette.
The Type 76-B2 Consolette consists of a cabinet containing the amplifiers, relays, transformers,
etc. mounted on a hinged chassis, and a sloping panel on which are mounted a large type vu meter, at-
tenuators, switches, controls, jacks, etc.
The vu meter is also used in connection with the "Tube
Check" switch for checking the condition of the Radiotrons.
The Radiotrons are easily accessible for inspection and servicing by raising the lid of the Con-
solette.
Two spring catches are made flush with the lid and are operated by turning through 90 degrees
with a thin coin or small screwdriver.
The entire upper section of the Consolette is hinged along the back and may be raised for reaching
the terminal boards, or for servicing the amplifiers and other components.
Three terminal boards for
external connections are provided, and the high level audio terminals are separated from the low level
terminals.
See Figure 2.
Metal tubes are used throughout, and in order to secure minimum vibration, the high gain tubes are
rubber shock -mounted on their respective mounting plates.
These tubes are actually double shock -mounted
since the mounting plates are also shock -mounted.
Five rubber -cushioned mounting plates are located on the hinged chassis as follows (left to right):
(1)
Relay Mounting Plate, on which are mounted the three relays, capacitors, resistors, etc. Two
Terminal Boards used for easy change over from two (or three) studio to single studio oper-
ation are also located under this plate.
- 6 -
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