C l e a r l y b e t t e r s o u n d
Technical Note
Connecting an LM-2 to a Line Input on a Z4
MK4
/Z8
MK4
Preamble:
The LM-2* is a remote module for use with Cloud host units fitted with an RJ45 Facility Port. It combines
the functions of a remote input connection plate, local audio mixer and a remote control for the host unit’s
background music.
Microphone and stereo line inputs are provided, with individual level controls. The stereo input is summed
to mono, and then mixed with the mic input. The LM-2 is designed to be connected to a Facility Port on
the host unit using screened Cat 5 cable and shielded RJ45 connectors. An audio source connected at the
LM-2 module is then routed into the Zone to whose Facility Port it has been connected (normally the one
where the LM-2 is installed).
It is sometimes useful to be able to make the remote audio source available to every Zone supported by
the host unit, rather than just the one local to the LM-2. To achieve this, the balanced audio signal from the
LM-2 needs to be connected to one of the host unit’s balanced line inputs instead of a Facility Port; it can
then be selected as the music source for each Zone where it is required, from the host unit’s front panel
(or from further LM-2 or RSL-6 Series remote control plates, if they are installed).
This Technical Note describes how to connect an LM-2 module to a balanced line input instead of a Facility Port.
Note that the LM-2 Installation Guide (supplied with each module) should also be referred to while making this
connection.
* The LM-2 is currently available in six style/finish variants: LM-2B, LM-2W, LM-2AB, LM-2AW, LM-2DB and LM-2DW. This Technical Note is
applicable to all variants; the wording “LM-2” is used throughout for brevity.
Applicable products:
Cloud Z4
MK4
and Z8
MK4
Zone Mixers are fitted with
both an RJ45 Facility Port and balanced line inputs
and are thus suitable for the connection described in
this Technical Note.
Parts required:
• 2 x screened RJ45 plugs
• Screened Cat 5 cable of the appropriate length
(host to module location)
• Short length 25 cm (12”) of twin-and-screen
audio cable
• 9-way nylon terminal block (“choc-strip”) suitable
for 1.5 mm
2
(6 A) cable
• Crimp ferrules (white)
• H15 silicone sleeves, 2 mm bore silicone sleeving
• Plastic enclosure to house terminal block with
two cable grommets (recommended but not
essential)
(Note that as the cable carries analogue audio, only screened
Cat 5 cable and shielded RJ45 connectors should be used.)
LM-2 front panel
MIC LEVEL
1
2
3
4
5
6
MUSIC LEVEL
LINE INPUT
MIC INPUT
LM-2
MIC
PRIORITY
1
4
5
2
3
6
7
9
10
8
0
1
4
5
2
3
6
7
9
10
8
0
1
4
5
2
3
6
7
9
10
8
0
TN-012
