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Rane FPM 44 Data Sheet
FPM 44
Professional Audio Products
PROGRAM MIXER
FPM 44 Program Mixer
General Description
The Flex Series FPM 44 Program Mixer is a
4-Input, 4-Output mic or line level mixer aimed
at general purpose sound contracting applications. The number of controls are kept minimal
for ease of customer use.
Terminal strips are provided for the active
differential balanced Inputs and Outputs.
Phantom Power is available via a side-panel
mounted switch. (See Application Information
section for additional phantom details.)
Input stage GAIN is switchable between 10,
40 or 60dB, and monitored by an overload LED
on each Channel. Separate input Overload
indicators aid in detecting large input signals
and excessive gain settings.
Two MASTER A/B Outputs are available for
zoning or other purposes, each with a separate
LEVEL control. Concentric Channel Input
LEVEL A/B controls allow two separate
MASTER A/B Output mixes.
In addition to the MASTER A/B Outputs
there are provisions for a separate AUX A/B
Output mix. Individual internal Pre/Post
switches allows choosing between sending the
AUX A/B levels before or after the Channel
LEVEL control. This way, the AUX A/B
Outputs function as independent outputs when in
the ‘Pre’ position (for taping, etc.), and as a
slaved functions when in the ‘Post’ position.
The FLEX BUS system allows unlimited
expansion of FPM 44 modules. Simply connecting the bus system together with DIN connecting
cables (supplied) expands the modules. Applications requiring 8, 12, 16 or ? inputs are handled
easily by adding additional FPM 44 modules.
With the FPM 44 as a building block, any size
mixer can be assembled and expanded as your
needs change.
Features
•
•
•
•
•
•
4 CH. MIC/LINE MIXER
2 MASTER A/B OUTPUTS
2 AUX A/B OUTPUTS
SWITCHABLE GAIN CONTROLS
PHANTOM POWER
TERMINAL STRIPS
Parameter
Input/Output Connectors
Input Gain Switch
Input Impedance
Phantom Power
Master Output Gain Range
Aux Output Gain Range
Maximum
Gain—Master
Maximum Gain—Aux
Maximum Input Level
Equivalent Input Noise (EIN)
Frequency Response
THD+Noise
Crosstalk
Maximum Current
•
•
•
•
•
•
PRE/POST AUX ASSIGNS
OVERLOAD INDICATORS
INPUT LEVEL CONTROLS
MASTER OUTPUT CONTROLS
AUX LEVEL CONTROLS
EXPANDABLE TO ANY SIZE MIXER
Specification
Terminal Strip
+10, +40 or +60
1k
+15
Off to +10/+16
Off to 0
76
60
+10
20kHz Noise BW, Balanced Out
-130
-126
-100
5-75 kHz
0.06
76 (1kHz); 50 (20kHz)
400
Limit
Units
2
1%
4%
1
1
2
2
1
dB
Ohms
VDC
dB
dB
dB
dB
dBu
2
Typ
Typ
+0/-3
.01
2
dBu
dBu
dBu
dB
%
dB
mA
Conditions/Comments
#6
3-Position Gain Switch
Mic or Line
Switch On Side Panel
Unbalanced/Balanced
Unbalanced
Input to Master Out (Balanced)
Input to Aux Out (Unbalanced)
GAIN: 10dB
Ch. LEVEL Max; MASTER Max
GAIN: 60dB (76dB total); Rs=150•
GAIN: 40dB (56dB total); Rs=150•
GAIN: 10dB (26dB total); Rs=150•
Any GAIN Setting
+15dBu Output, 20-20kHz
Any Input To Any Output
RMS Current From Remote Supply
FPM 44
Professional Audio Products
PROGRAM MIXER
Rear Panel
Block Diagram
Application Information
Input gain setting is done via the front panel
GAIN switch. The highest Gain position that
prevents sustained lighting of the OL indicator
should always be used. This allows the best
overall signal-to-noise ratio. The input Overload
indicators are set to come on when signal levels
exceed +16dB. This is about 4dB before actual
clipping, so occasional flickering of these
indicators is permitted; however, they should
never be allowed to remain lit for long periods of
time. In this event, turn down the appropriate
LEVEL control.
Master Phantom Power is controlled by a
side-panel switch. This applies power to all four
Inputs. Individual Phantom Power switches for
each Channel are internal. For line-level applications, Phantom Power automatically disengages
in the GAIN=10dB position.
The Input LEVEL controls are concentric
type. Thus, two different levels may be sent to
each of the MASTER A/B Outputs. These
controls, in essence, are separate mix controls.
You have the choice of putting all of any Input
into MASTER OUTPUT A, or B, or any fraction
thereof into both.
In addition, each Input has an AUX SEND
control for mixing a separate AUX A/B Output.
Individual internal PRE/POST slide switches
determine where this signal originates (see Block
Diagram above). The decision is based on
whether you want the AUX A/B Output levels to
be affected by the Input LEVEL control. For
example, using the AUX A/B Outputs to feed a
tape recorder is a common application. Here, you
do not want the AUX A/B Levels affected by the
Input LEVEL control, so you would leave the
slide switch in the PRE position The AUX SEND
is a stereo concentric, sending the Input to both
AUX A and AUX B Outputs. An internal
modification is available that disconnects either
output so that the FPM 44 can be used as a 4 x 4
mixer, or four separate microphone preamps.
Expansion is accomplished by tying the first
unit’s BUS OUT connector to the second unit’s
BUS IN connector with the supplied DIN cable.
For multiple units, this process is continued to the
end. The first unit’s Output is the first 4 sources
mixed; the second unit’s Output is 8 sources, and
so on.
© Rane Corporation 10802 47th Ave. W., Mukilteo, WA 98275-5098 TEL(206) 355-6000 FAX(206) 347-7757
Printed in the U.S.A. on Recycled Paper
All features & specifications subject to change without notice 520-225 AUG94
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