Integra MZA-4.7 - Manual (Page 6)

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Features —Continued
advantageous to have different volume control but the
same source, or the same volume with separate standby
control. Zone linking is setup either via the front panel
user interface or by the IMC program.
32 Zones
There are 32 zones of possible control.
On a MZA-4.7 each zone must be different, however in
a multiple amplifier stack same zone amplifiers are pos-
sible – they simply mimic every parameter.
Expansion Bus
Data, IR, Amp-On & Audio sources are interconnected
via the expansion bus.
The expansion bus feature vastly simplifies the installa-
tion cabling of an amplifier stack.
One amplifier is connected to another using a 34-way
ribbon cable. Connections are made from the output of
the first amplifier to the input of the second etc.
All audio sources must be connected to the first ampli-
fier.
Note: Video signals are not passed through the expan-
sion bus.
Door Bell
Looped 1.5 second mono sounds can be generated as
part of a page preset.
Suitable “wav” files are uploaded to the unit using the
IMC program. IMC truncates the “wav” files to a suit-
able size.
12VDC 1A Power
Two 12VDC jacks are available for powering external
accessories – internally fused at 1A (Self-resetting).
Amplifier ON Status – “Amp-On”
Each zone has front panel ON status indication, and
12VDC OUT on the rear panel connector: (1, 2, 3, 4 &
#). The # “AMP ON” output is a logic “And” output, i.e.
if any zone is ON then the output will be 12V. This is
useful for driving a relay that connects AC power to
source equipment. The “AMP ON” output’s are pro-
tected against shorts. The “AMP ON” outputs default to
tracking the preamplifier ON status, but may optionally
be set to track the amplifier ON status using the IMC
program.
Power Failure Restoration
After an AC power outage the MZA-4.7 restores its set-
tings to the pre-interrupted state.
All internal settings are stored in non-volatile memory,
except the clock that runs for at least 48 hours on stored
power.
Restore Defaults
The MZA-4.7 may be set to the default settings.
Restoring Defaults clears all memory and resets the zone
allocations to zones 1 - 4.
Setup Lockout
Locks access to the System Setup and More menus
where installation critical adjustments can be made.
Password = 1396
Firmware Upgradable
May be updated with the latest operational firmware,
using the USB Uploader program.
Provides a degree of future proofing, and flexibility.