Cloud Electronics LM-2B User Manual
LM-2 Series Remote Mic/Line
Mixer/Control Modules
LM-2B (Black)
LM-2W (White)
LM-2AB (USA, Black)
LM-2AW (USA, White)
MIC LEVEL
4
3
2
MIC INPUT
MUSIC LEVEL
6
5
1
0
6
5
7
8
10
9
MIC LEVEL
4
3
2
1
MIC INPUT
5
4
3
2
1
LINE INPUT
6
0
7
8
9
10
0
MUSIC LEVEL
7
4
8
9
3
2
10
MIC
PRIORITY
5
1
LINE INPUT
3
4
2
5
6
1
6
5
7
4
8
9
3
2
10
1
0
LM-2
6
7
8
10
0
9
MIC
PRIORITY
3
4
2
5
6
1
6
5
7
4
8
9
3
2
10
1
0
LM-2A
LM-2DB (German, Black)
LM-2DW (German, White)
Installation Guide
3
2
1
4
3
2
1
0
MUSIC LEVEL
4
3
2
1
0
MIC LEVEL
4
5
6
10
5
6
10
5
6
7
8
9
7
8
9
MIC
PRIORITY
MIC INPUT
5
6
4
7
3
2
8
1
9
0
10
LINE INPUT
LM-2D
LM-2 Installation Guide v1.1 1
Contents
Introduction .................................................................................................................................... 3
Mounting - mechanical .................................................................................................................. 3
Faceplate Controls and Connections ........................................................................................... 4
Block Diagram ................................................................................................................................ 5
Installation - connections .............................................................................................................. 5
Conguring the Facility Port ....................................................................................................................................... 7
Connecting multiple LM-2s ......................................................................................................................................... 7
Local inputs .................................................................................................................................................................. 7
Remote controls ......................................................................................................................................................... 8
LM-2 Priority Operation................................................................................................................ 9
Mic priority: .................................................................................................................................................................. 9
Full priority: .................................................................................................................................................................. 9
Power considerations ................................................................................................................... 10
LM-2 Installation Guide v1.12
Introduction
The LM-2 is a remote module for use with all Cloud products tted with a Facility Port, including:
• Z4MK3 and Z8MK3 Zone Mixers
• Z4MK4 and Z8MK4 Zone Mixers
• 46-120 and 46-120MEDIA Zone Mixing Ampliers
NOTE: Unless specically stated otherwise, all references
to “LM-2” in this Installation Guide can be taken to apply
to all LM-2 mechanical and cosmetic variants.
The LM-2 module combines the functions of a remote input connection plate, local audio mixer and a remote control for the
host unit’s background music.
Inputs for both a microphone and a stereo line signal (for a local music source) are provided, with individual level controls. The
stereo channels are summed to mono, and then mixed with the mic input.
The remote control facilities are equivalent to those on a Cloud RSL-6 remote control module, and allow selection of background
music source and level control for the host’s Zone to which the LM-2 is connected. (Note that the 46-120 and 46-120MEDIA
have a single Facility Port, for Zone 1 only.)
The LM-2 is connected to the host unit’s Facility Port by a single screened Cat 5 cable with shielded RJ45 connectors. A link
connector is provided to permit multiple LM-2s to be installed in the same Zone.
Mounting - mechanical
LM-2 (UK version)
The Cloud LM-2 ts a standard UK-style dual-gang electrical back box. The box used should have a depth of at least 35 mm.
LM-2A (US version)
The Cloud LM-2A ts a standard US dual-gang electrical ‘J’ box in vertical orientation. The box used should have a depth of at
least 1¼”.
LM-2D (German version)
The Cloud LM-2D ts a DIN-standard double-gang back box (requiring 2 x 68 mm dia cut-outs), of the type used in various
countries including Germany. The box used should have a depth of at least 35 mm.
LM-2 Installation Guide v1.1 3
Faceplate Controls and Connections
4 5 76
MIC LEVEL
5
4
3
2
1
MIC INPUT
6
7
10
0
MUSIC LEVEL
6
5
4
8
9
3
2
LINE INPUT
7
8
9
1
10
0
MIC
PRIORITY
21 3 8
3
4
2
1
5
4
3
2
1
5
6
6
7
8
9
10
0
UK version illustrated
LM-2
1. MIC INPUT – 3-pin XLR3F connector for dynamic microphones. Note that the LM-2 does not provide phantom power.
2. LINE INPUT (a) – 2 x phono (RCA) sockets for connection of sources such as CD players, audio mixers, radio mic
receivers, etc; suitable for line level signals with a nominal level of 0 dBu.
3. LINE INPUT (b) – 3-pole 3.5 mm jack socket for connection of sources such as computers, laptops and digital media
players; suitable for line level signals with a nominal level of +8 dBu. A source plugged into this input will be summed to
mono and mixed with any source connected to the phono inputs 2.
NOTE: Both stereo line inputs are summed internally to mono; hence, if using a mono source such as a radio mic receiver, only
one channel need be connected.
4. MIC LEVEL – gain control for mic input. Up to 60 dB gain is available; with the control fully anti-clockwise, the input is
effectively ‘off ’.
5. MUSIC LEVEL – gain control for whichever line input (2 or 3) is in use. With the control fully anticlockwise, the source
will be ‘off’; in the fully clockwise position, 10 dB of gain is provided.
6. MIC PRIORITY – default function for this button is to give the microphone input priority over both the module’s line
input and the background music selected at the host unit. This operation can be modied by jumpers on the rear PCBs. See
“LM-2 Priority Operation” on page 9.
7. BACKGROUND MUSIC SOURCE – six-position switch selecting which of the host unit’s six Line Inputs will be routed
to the Zone to whose Facility Port the LM-2 is connected (usually the Zone where the LM-2 is installed).
8. BACKGROUND MUSIC LEVEL – adjusts the background music level in the Zone.
NOTE: Switches and internal jumpers will need to be set in the host unit in order for the background music controls 7 and 8
to operate as required. See “Remote controls” on page 8.
LM-2 Installation Guide v1.14
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