M&S Systems XDM46K Instruction Manual Download Page 2

Introduction 

The XDM4600 Xtreme Digital Music system is an expandable, 
integrated digital audio distribution system. It offers music and 
intercom functions to four zones (expandable to eight) and allows 
communication with visitors at the front door as well. 

The four zones, the door station, and six audio sources connect to 
a single Central Controller. The Central Controller has six analog 
line inputs for sourcing music to the system, and communication 
between the Central Controller and the zones is digital. An infrared 
repeater built into the system allows the audio source equipment 
to be controlled from the zones with a universal Remote. 

Each zone contains a class-D amplifier and other circuitry to drive 
one pair of 8-ohm speakers as well as a local audio source. The 
front door chime mutes any music and intercom function that is 
playing so the chime can be heard over the speakers in each 
zone. Each zone is powered from the Central Controller, requiring 
only one power cable to go from a house outlet to the system. 

 Xtreme Digital Music System Overview 

The XDM4600 provides six audio sources to four zones, or rooms, 
in your home.  In addition, the zone keypads and the Door Station 
have intercom functions (page all, listen all, front door 
communications) for communication throughout your home. You 
can expand the number of zones to eight with the optional 
Expansion Controller. The core system kit consists of a Central 
Controller (XDM46CC), 4-Zone Keypads (XDM46K), 1-IR Remote 
(XDM46R), 6- IR Emitter (XDM46IRE), and 1- Door Station 
(DS3B2). Optional components, Expansion Hub (XDM46EH) and 
Local Audio Source Wall Plate (XDM46WP) can be purchased 
separately.  

Zone Keypad 

From any Zone Keypad, you can talk and listen on the intercom, 
and you can control the music for the entire system (party mode) 
or for the local zone only. With the universal Remote Control 
(XDM46R), you can control all audio sources from a Zone Keypad. 

 

Electrical Double-Gang Box Rough-In 

Mount one side of the double-gang electrical box to a wall stud. 
The bottom of the box should be approximately 52 inches, or as 
requested,

 

from the finished floor. 

 
 

 

Do not install the electrical box in non-climate controlled 
locations such as outside the house, in outside walls, or in a 
garage. 

 

Do not install the electrical box in stud cavities that contain 
other wiring, ductwork, air-return cavities, piping, etc. 

 

Do not install the electrical box within 18 inches of dimmers, 
fluorescent light fixtures, security wiring, or other control 
wiring. 

 

Do not install the electrical box within 2 inches of room 
corners. 

 

 

 

Wiring Considerations 

 

 

 

  Keep all Zone Keypad wiring away from 120/240V wires, dimmers, 

and other control wiring.  

  The 16-gauge, 2-conductor wire for power supply and 18-gauge 

speaker wire enter the electrical box on the left side, when you are 
looking into the box.  

  The CAT-5 wires for communication and the line-level in/out enter 

the electrical box on the right side, when you are looking into the 
box.  

  Label all wiring: Power, right speaker, left speaker, communication, 

line-level in, and line-level out. 

  Knot or fasten all wires in some manner to prevent them from 

slipping out through the back of the electrical box. 

  DO NOT confuse the 16-gauge power wire with the 18-gauge 

speaker wire. 

 

Finishing the Zone Keypads 

 

 

 

The 16-gauge and 18-gauge (for the speakers), 2-conductor wires 
attach to the 1x6 connector. The wire that provides power from the 
controller attaches where indicated by the label on the connector – the 
solid red indicates the position of the positive wire while the striped 
red indicates the position of the negative wire. The position of the 
s/- L and +/- R is indicated by the L+, L-, R+ and R- lettering 
on the label. 

The 1x10 connector attaches to the two CAT-5 cables. On the label, a 
heavy black line separates the connection of the two wires. Any 
unused wires are cut off. Refer to the connector label for the proper 
position of each color-coded wire. From top to bottom, the color code 
is as follows: blue/white, blue, green, orange, brown, and brown/white. 
This group is for the CAT-5 cable that goes to the wall plate. The 
remaining color codes are orange, orange/white, green, and 
green/white. This group is for the CAT-5 cable that carries the 
controller communication data.     

 

 

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