Ampex 351 - Page 101

&
Rack layout (shown with Ampex 354 tape
re 
corder)
MASTER GAIN
K swl
Am
K
K
SW
K
K
COUPLED MIXER INPUT
Block diagram, MX-35 mixer
COUPLED
MIXER OUTPUT
PROGRAM
AMPLIFIERS
Al
Bl
A2
B2
PREAMPLIFIERS
LINE/MIC
KEYS
■©
o
Ap
MIXER
POTS
X
j>
The MX-35 operates from four low imped 
ance microphone inputs and two unbalanced
line inputs: (balanced input when using No.
58-0116-01 plug-in transformer), feeding two in 
dependent program amplifiers controlled by a
two gang master gain control. Advanced de 
sign amplifier circuitry permits very high input
and output levels without distortion. Power
supply is self-contained and all heaters are fed
by a de supply. Conservatively rated compo 
nents maintain quality and long operating life
without need for service or repair.
Although designed primarily to feed A mpex
Professional recorders, this unit can be used
with other audio recorders and sound equip-
MIXER
TRANSFER
KEYS
-- K
ment such as speech input systems, public ad 
dress or sound systems where unique control
facilities of the MX-35 make it a flexible audio
tool.
The operating instructions for the MX-35
Mixer Assembly are contained in Ampex in 
struction manual TM-2010.
MIXER
COUPLED
SWITCH
MIXER ASSEMBLY
The MX-35 mixer assembly (Catalog No. 01-
96910-01) is a compact four position, two chan 
nel mixer with unique switching facilities found
only in expensive custom designed studio con 
soles. Special coupling connectors are provided
to give additional facilities where up to four
MX-35 ’ s can be coupled together with overall
master gain controlled by the last unit in the
system. Each mixer position has a reset indica 
tor which permits return to a previous level
and is supplied with a key switch which feeds
channels “ A ” or “ B ” or BOTH. In the latter
position, this permits feeding the solo mike
(as in the case of stereo recording) equally to
both left and right channels while other mikes
are feeding either the left or right channels.
Above mixer positions No. 3 and No. 4 are two
additional keys to select mike or line input from
appropriate receptacles located on the back of
the unit. All switching regardless of combina 
tion maintains proper balance and isolation
between channels.
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OPTIONAL BALANCED BRIDGE
PLUG-IN TRANSFORMERS
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