Whirlwind MIPAI Users Manual
whirlwind MIPAI
Active Wall plates
MIPAI MIPAI
+
-
G
OUTPUT
+
-
POWER
+
-
INPUT
G
PLUGGABLE TERM STRIP
WIRES SCREWED IN ON INLINE
MIC
AUX
+
-G
OUTPUT
+
POWER
+
-
PLUGGABLE TERM STRIP
INPUT
G
WIRES SCREWED IN ON INLINE
+10
-10
AUX IN
POWER
MIC IN
21
3
WIRING GUIDE
OUT +
OUT OUT G
POWER +
POWER SUM IN +
SUM IN SUM IN G
The Whirlwind MIPAI media input plates are active, dual input mixer plates
designed to combine line and microphone input sources into a single line level
balanced output that can be sent over long distances to remote audio processing
equipment. Applications include gymnasiums, banquet halls, conference centers
and others where local volume control is desired for the source material. The
MIPAI is available in a one gang wall plate with black or clear brushed aluminum
finish and in a two gang white decor insert.
OUTPUT
MIPAI
+
-
G
OUTPUT
+
-
POWER
+
INPUT
PLUGGABLE TERM STRIP
G -
WIRES SCREWED IN ON INLINE
MALE XLR
1 2
3
MIPAO
OUTPUT
G
-
TO POWER AMP
INPUT
G
-
+
POWER
+
-
+
24 VDC AND AUDIO
POWER
+24 VDC
INSTALLATION
Five wires are required (plus, minus and ground for audio with positive voltage
and common power wires) for connection to the input of the processing
electronics and the power supply. Wiring can be done with two pieces of Belden®
8451 type wire or a single Cat5 type wire. The MIPAI is designed so that the 24
VDC supply can be located in the electronics rack up to 1000 feet away from the
plate.
CAUTION: Use care when installing MIPAI plates into backboxes. Slide into
box so that circuit boards do not come into contact with sides of metal boxes,
conduit fittings or wiring. The pluggable Phoenix connector can be installed
with wires facing rearward or in between the circuit boards.
Electrical backbox depth of 2.5” minimum recommended for gangable box
type, 2.125” for utility box type.
DESCRIPTION
Each Whirlwind MIPAI plate is a standalone two channel mixer with one
balanced mic level input via a 3 pin female XLR and a stereo aux input
connected through a 3.5mm TRS unbalanced jack that is summed to
mono. Separate level controls are provided for each input and deliver
enough gain to drive modern power amplifiers to full output. A bass cut
switch is provided on the mic input for reducing rumble and handling
noise.
An additional line input appears on the rear panel screw terminals for
connecting up to two more MIPAI plates in a daisy chain type
configuration, i.e., output of the first to the input of the second, output of
the second to the input of the third and output of the third to the
processing electronics. All three plates are summed together and all six
level controls can adjust their respective inputs up to the maximum
output drive level of +22 dB. If inputs from multiple MIPAI plates are used
at the same time caution must be taken to keep the total summed output
level below +22dB or sum bus clipping can occur. Each MIPAI has two
LEDs that indicate signal levels of -10 dB and +10 dB. The last MIPAI in
the chain will show signal level on its LEDs even if no input is being
applied to that plate. All three plates can be powered from a single supply
located in the equipment rack.
The Whirlwind MIPAO or MIPAT output termination
boxes can used to connect MIPAI plates to
processing electronics. Audio output is via a 3 pin
male XLR or screw terminals. A 2.1mm power input
jack loops the wall power supply to the MIPAI screw
terminal connections. The MIPAT model has a
transformer isolated audio output.
SPECIFICATIONS:
Mic Input 60 dB max gain
Frequency Response at 60 dB gain -.8 dB @ 20 to -1.7 @ 20 kHz
Equivalent Input Noise Mic Preamp 117 dB
Max input level at 40 dB gain -17 dBV
Max input level at 60 dB gain -37 dBV
Bass cut filter 120 Hz 24dB/octave
Aux Input 26 dB max gain
Frequency Response at 20 dB gain -.8 dB 20 to 20 kHz
Max input at 0 dB gain +17 dBV
Maximum Output Level +23 dBV
Power Requirement 24 VDC 200 mA; 53 mA per plate max
Whirlwind #PS242.1 when included
Output connections on the rear circuit board are 8
posi tion, 3 .5mm sc rew typ e, re movab le pl ugs
(Phoenix® 1984073 or equivalent). The rear panel line
input is shipped with a shorting jumper termination.
Remove the jumper to connect another MIPAI.
Warranty
This product is guaranteed for 2 years from the date of purchase against
manufacturing defects. For warranty service, return the unit, along with the
original sales receipt, to” Whirlwind, Rochester, NY 14612, postage prepaid. We
will repair or replace the unit at our option and pay return postage.
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