Whirlwind U.S. Audio MPM1 Operation Manual

BUSS INPUTS
PRIORITY 2 PRIORITY 1
LEFT
SUM VCA SUM VCA SUM
RCA
VOLUME
INPUT 1 BASS
1
1
LO-MID
DUCKING
DUCKING
DISABLE
HI-MID
RIGHT DISABLE
TREBLE
LEFT
SUM VCA SUM VCA SUM
RCA
VOLUME
INPUT 2
RIGHT
LEFT
RCA
VOLUME
INPUT 3
30 SEC
LINE PRIORITY
1
DUCKING RELEASE
RIGHT VC
THRESHOLD, ONE SHOT,
RELEASE RAMP AND VC 1 1
CIRCUITS. THIS INPUT DUCKS
3 SEC
BALANCED INPUTS
-70 ALL THE TIME VCP1 VCP2
PRIORITY LINE RIGHT/MONO
MIC INPUT
VOLUME
DUCKING -20/OFF/-70
1 1
18 VOLTS
3 POSITION SWITCH
VC IN
P2L P2R
THRESHOLD, ONE SHOT,
VC
RELEASE RAMP AND VC
PRIORITY MIC
CIRCUITS
1 2 + +
3
_ _
LO CUT FILTER
24dB PER OCTAVE
-3dB AT 120Hz VOLUME
+18 VOLT PHANTOM POWER ALWAYS ON
JUMPER LOCATION
Unplug the AC cord of the unit. Remove
the four screws on the top right and left sides and
loosen the four screws on the bottom left and right
sides. The top cover can now be removed by lifting
straight up. The jumpers are located behind and to
the left of the select switch. Pin 1 of each jumper is
labeled as shown. The four priority audio jumpers
PRIORITY CONTROL JUMPERS
(P1L, P2L, P1R, P2R) and two priority control
jumpers (VCP1, VCP2) are shown in the default
position with the paging mic having top priority
and the line input having priority 2. To reverse this,
change all 6 jumpers from pin 1 and 2, to pins 2
and 3.
The line priority ducking release time
MIC
jumper is shown in the default position of 3
seconds with pins 2 and 3 connected. To lengthen LINE
the release time to 30 seconds, change the jumper
to pins 1 and 2.
Jumpers for left channel ducking
disable are shown in the default position with
ducking active. To defeat this feature for either
priority 1 or priority 2 or both, change the
appropriate jumpers from pin 1 and pin 2 to pins 2
1
and 3. Remove jumper P1L and P2L completely to
1
remove the priority audio from the left channel
audio output.
Double check all jumpers for proper
PRIORITY 1
PRIORITY 2
positioning. Place the top cover back on the unit.
LEFT DUCKING DISABLE
Start all four of the top screws before tightening all
LINE PRIORITY DUCKING RELEASE
eight screws.
SPECIFICATIONS
+ 2 1 Frequency Response
3
_ RCA Inputs and
LEFT
BALANCED
Line Inputs
OUTPUT
MASTER
STEREO/MONO
VOLUME
Input Impedance
RCA Inputs 1-3
+ 2 1
3
Mic Input
_
Priority Line
RIGHT
BALANCED
Buss Input
OUTPUT
Maximum Input Level
RCA Inputs 1-3
120 VAC/230 VAC
JUMPERS Priority Mic
ON/OFF Priority Line
Buss Input
POWER SUPPLY
Output Impedance
CHASSIS
+18 VDC RCA Outputs
GROUND
-18 VDC
XLR Outputs
GROUND
POWER ON
Maximum Output Level
GROUND
RCA Outputs
LIFT
1 1
XLR Outputs
P1L P1R
T.H.D.
RCA In/RCA Out
Mic In/RCA Out
Rise Time
BLOCK DIAGRAM
Priority Mic
Ducking Threshold
30.0 dBr
20.0 dBr
10.0 dBr
0.00 dBr
P2L
1
10.0 dBr
P1L 1
P1R
1
P2R 1
20.0 dBr
PRIORITY
AUDIO
JUMPERS
Priority Line
-20 dB
Ducking Threshold
Release Time
5 seconds
Mic Priority
3 seconds (Normal)
Line Priority
30 seconds (Slow)
+.05 dBm at 20 Hz to -60 to +20 dB
Range of Level Pots
-1.3 dBm at 20 kHz
+ or - 3dBm 3 to 30 kHz
Common Mode Rejection
>50 dB at 50 Hz
Mic Input
10 k ohms unbalanced -40 to +45 dB
Gain Mic Input
1.2 k ohms balanced
20 k ohms balanced
Stereo Separation >60dB
20 k ohms unbalanced
Equalizer Gain/Cut
Bass 25 dB at 20 Hz
+23 dB unbalanced Lo Mid 14 dB at 250 Hz
-5 dB balanced Hi Mid 14 dB at 1.6 K Hz
+23 dB balanced High 15 dB at 10 K Hz
+23 dB unbalanced (See Response Plot)
Signal to Noise Ratio
100 ohms unbalanced at Unity Gain
100 ohms balanced RCA in to RCA out 76 dB
Range of Remote Volume 45 dB
+23 dB
+23 dB Power Consumption .2 Amps AC Maximum
Size
.06% at 1K Hz unity gain Width 19" with rack mount ears
.05% at 1K Hz 40 dB gain 17 3/8" without rack mount ears
Height 2 1/8" with rubber feet
12 uS 1 13/16" without rubber feet
Depth 6" from front of knobs to back
connectors
5 ¼" rack depth mount
-40 dB
Weight 7 ¼ pounds
SYSTEM TONE CONTROL FREQUENCY RESPONSE
20.00 Hz Frequency LOG 32.00 kHz
U.S.Audio
INTRODUCTION
Thank you for selecting the MPM1V and the MPM1 music
and paging mixers. These high quality, versatile mixers can be
used in countless applications to provide simple, easy control of
multiple audio and video sources. Features include three stereo
inputs for audio connection of CD and cassette players, radio
tuners, VCR and DVD players, etc.; two priority inputs which
allow paging and automatic music override for announcements
or a jukebox; and a four band equalizer for enhancing the overall
sound of the system. The MPM1V has three composite video
inputs allowing VCR, DVD, cable and satellite box video
switching simultaneously with the stereo audio. Both units have
stereo and mono audio outputs and remote master volume
control capabilities.
Housed in a single rack space unit with removable rack
ears and designed for continuous operation, the MPM1 includes
all the features necessary to operate most single zone sound
system installations in night clubs, sports bars, health clubs,
offices, restaurants or anywhere paging and/or priority inputs are
required.
UNPACKING
US Audio has made every effort to ensure that your
equipment is received in the same perfect condition it was in
when it left the factory. Please inspect your product for any
signs of damage during shipping and report them to your dealer
so that a claim can be presented to the shipper. We recommend
that you save your packaging material for use in the unlikely
event that you need to return your equipment for service.
whirlwind
U.S.Audio
99 Ling Road . Rochester, NY 14612
Phone 800 733-9473 . Fax 585 865-8930
Email: sales@whirlwindusa.com
OPERATIONS MANUAL
M M P P M M V V
1 1
M M P P M M
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Music Page Mixer