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17 Audio Distribution Amplifier - RB-MS4X3
17 RB-MS4X3 Quad 3 Way Microphone Splitter
Introduction
Controls x 4
Fig 17-1: RB-MS4X3 Front Panel
The RB-MS4X3 is a passive microphone splitter, designed to split the signal
from a single mic or line source, to up to 3 destinations, whilst allowing
the operator to pass phantom power back from mic preamplifier inputs,
or apply +48VDC power directly from the unit. Pin 1 “ground” lifts are
provided to eliminate ground loop problems.
Block Diagram
Fig 17-2: RB-MS4X3 System Block Diagram
Isol Out 1
Isol Out 2
2
1
3
2
1
3
2
1
3
2
1
3
Ext. Phantom
Present LED
Mic Input
Direct Out
Disconnect CT
On/Off
-30dB
Pad
Gnd
Lift
Gnd
Lift
Ext. +48V
Circuit Inside Box Replicated 4 Times
Ext
48VDC
On
