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.
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.
Pro Co Sound
225 Parsons Street | Kalamazoo, MI 49007
800-253-7360
»
www.procosound.com
MS3-02 Rev. 12/11
APPLICATION INFORMATION
CIRCUIT DIAGRAM:
AV1B
Audio/Video Interface Unit
AVP1
Wallplate Format Audio/Video Interface Unit
AVP1V Wallplate Format Audio/Video Interface Unit with Input Level Control
CB1
Direct Box
DB1
Professional Direct Box
DB2
Professional Stereo Direct Box
DB4A Rackmount Quad Direct Box
DBA1 Professional Active Direct Box
HJ4P
Professional Stereo headphone Junction Box
HJ6
Headphone Junction Box
iFace
Portable Audio Player Interface
iGate
Universal Audio Gateway
iPlate Wallplate Format Portable Audio Player Interface
iRack
Rackmount Portable Audio Player Interface
IT1
Isolation Transformer Unit
IT4A
Rackmount Quad Isolation Transformer Unit
IT8A
Rackmount 8-ch. Isolation Transformer Unit
LS82
Rackmount 8-ch. 1:2 Line Level Splitter
MC2
Microphone Combiner
MS2
1:2 Microphone Splitter
MS3
1:3 Microphone Splitter
MS42A Rackmount Quad 1:2 Microphone Splitter
MS43A Rackmount Quad 1:3 Microphone Splitter
MS82 Rackmount 8-ch. 1:2 Microphone Splitter
MS82P Rackmount 8-ch. 1:2 Phantom Power Microphone Splitter
MS83 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!
Other TradeTools™ Products from Pro Co
PRO CO MODEL: MS3
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
SHIPPING WEIGHT............................2.00 lb/0.91 kg
WHT
YEL
BLK
MBT-2 TRANSFORMER
GRN
RED
BRN
(CAN)
BLU
PNK
GRY
BRN
ISO OUT 1
S (PIN 1)
H+ (PIN 2)
C- (PIN 3)
ISO OUT 2
S (PIN 1)
H+ (PIN 2)
C- (PIN 3)
GROUND
LIFT
GROUND
LIFT
INPUT
DIRECT OUT
S (PIN 1)
H+ (PIN 2)
C- (PIN 3)
S (PIN 1)
H+ (PIN 2)
C- (PIN 3)
S2
S1
FRONT VIEW
SIDE VIEW
TOP VIEW