17 Rb-Ms4X3 Quad 3 Way Microphone Splitter; Introduction; Block Diagram; Fig 17-1: Rb-Ms4X3 Front Panel - Sonifex Redbox RB-DA6 6 User Handbook Manual

17 Audio Distribution Amplifier - RB-MS4X3

17 RB-MS4X3 Quad 3 Way Microphone Splitter

Introduction

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

Mic Input
1 2
3
Direct Out
1 2
3

Fig 17-2: RB-MS4X3 System Block Diagram

56
Ext. +48V Ext. Phantom
Present LED
On
Ext
48VDC
-30dB
Pad
On/Off
Controls x 4
Disconnect CT
Circuit Inside Box Replicated 4 Times
Isol Out 1
2 1
3
Gnd
Lift
Isol Out 2
2 1
3
Gnd
Lift