Doc.No.: 03118-000-IS
Page 8 of 12
2.1.5 Zones
In most installation there is a requirement for dividing the system into different paging zones. The
MPA 1600 has 6 zones available for paging separation. Each zone is individually controlled from the
MPA 1601 / 1604 control units.
The zone selection is important for loudspeaker distribution and the cabling plan preparation.
2.1.6 Amplifiers
The amount of loudspeakers, their tapping (actual power output) and, in some cases, the zone
segmentation determines the necessary amount of amplifiers in the amplifier pool.
In a fixed line level (100V) system as the MPA 1600, the requirement for amplifier power is exactly
the same as the loudspeaker output figure.
During engineering of the MPA 1600 GA / PA system it is recommended to calculate 10 – 25 %
headroom of the amplifier pool for installation and/or later adjustments
The available amplifiers come in 3 power output versions:
PA 6312 – 120W output power
PA 6324 – 240W output power
PA 6336 – 360 W output power
Amplifier requirement calculation example:
System A (identical to B)
Zone 1 (cabins & corridors)
Zone 2 (crew accommodation)
Zone 4 (engine room spaces)
Zone 6 (passenger spaces)
System B (identical to A)
Zone 1 (cabins & corridors)
Zone 2 (crew accommodation)
Zone 4 (engine room spaces)
Zone 6 (passenger spaces)
This example gives a reasonable safety margin for miscalculation and/or headroom for future
adjustment:
Amp 1 : 31 % Headroom
Amp 2 : 44 % Headroom
Amp 3 : 38 % Headroom
Amp 4 : 50 % Headroom
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