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APPLICATION INFORMATION
NOTES:
1.
For safety reasons, all equipment with 3-wire AC line cords
should be connected to properly grounded receptacles.
If all mixers are grounded properly, GND/LIFT switches
should be set in the LIFT position for minimum hum and
buzz. If this setting does not minimize hum and buzz, it may
be indicative of poor grounding quality or improperly wired
AC receptacles. Such conditions may be hazardous and
should be investigated.
If a GND/LIFT switch seems non-functional, check the wiring of
all mic cables plugged into the unit. Cables with a jumper
between pin 1 and the connector shell can defeat the GND/LIFT
switches.
2.
Microphones require a ground connection somewhere in the
signal path. For this reason it is suggested that a properly
grounded mixer always be connected to the DIRECT OUTPUT.
CIRCUIT DIAGRAM:
PRO CO MODEL: MS3
S (PIN 1)
H+ (PIN 2)
INPUT
C- (PIN 3)
S (PIN 1)
H+ (PIN 2)
DIRECT OUT
C- (PIN 3)
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Pro Co Sound
225 Parsons Street | Kalamazoo, MI 49007
800-253-7360
MBT-2 TRANSFORMER
GRN
WHT
YEL
LIFT
S1
BLK
GROUND
BRN
RED
PNK
GRY
BLU
LIFT
BRN
S2
(CAN)
GROUND
3.
Direct boxes receiving inputs from AC-line-powered sources
such as keyboards or stage amplification should have their
GND/LIFT switches set to LIFT and the source equipment line
cords properly connected to grounded 3-wire receptacles
whenever possible. (See note 1).
4.
Because of the use of a transformer, DC current cannot be
passed from an ISOLATED OUTPUT to the INPUT. This effectively
blocks phantom power such as may be required by condenser
microphones and some direct boxes. Phantom power must
be provided by the mixer connected to the DIRECT OUTPUT, or
by a suitable outboard power supply connected between the
microphone and the INPUT.
DIMENSIONS ................ 4.88" D x 4.38" W x 1.75" H
123.8mm D x 111.1mm W x 44.4mm H
WEIGHT .............................................. 1.125 lb/0.51 kg
S (PIN 1)
SHIPPING WEIGHT............................2.00 lb/0.91 kg
H+ (PIN 2)
C- (PIN 3)
ISO OUT 1
TOP VIEW
S (PIN 1)
H+ (PIN 2)
C- (PIN 3)
ISO OUT 2
FRONT VIEW
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MS82P Rackmount 8-ch. 1:2 Phantom Power Microphone Splitter
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Rackmount 8-ch. 1:3 Microphone Splitter
MS83P Rackmount 8-ch. 1:3 Phantom Power Microphone Splitter
. . . plus our full line of audio cabling, snakes!
www.procosound.com
»
SIDE VIEW
MS3-02 Rev. 12/11
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