APart MA247 User Manual
MA 247
Mixing Amplifier
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Something of a legend already, this 240 Watts, 6-zone 100V amplifier has been improved with 24V
dedicated priority output per zone for more listening and operating comfort. The combination with
the trusted functionalities of its predecessor makes the MA247 your selective 100V paging amplifier
of choice. It can be used stand-alone, or as the core of an expandable sound system.
dedicated priority output per zone for more listening and operating comfort. The combination with
the trusted functionalities of its predecessor makes the MA247 your selective 100V paging amplifier
of choice. It can be used stand-alone, or as the core of an expandable sound system.
Because the MA247 offers independent source selection for zones 1 and 2-6, it can be used as a
multi-source zoning system. Zone 1 is a fully independent pre-amplified zone and allows the installer
to use an external power amplifier to amplify it. It is especially useful for large areas that require
many speakers, like factory production areas. This has the particular advantage that the installer can
use the external amplifier to suit his power needs for that particular zone.
multi-source zoning system. Zone 1 is a fully independent pre-amplified zone and allows the installer
to use an external power amplifier to amplify it. It is especially useful for large areas that require
many speakers, like factory production areas. This has the particular advantage that the installer can
use the external amplifier to suit his power needs for that particular zone.
Zones 2 to 6 can be individually volume controlled using the integrated speaker volume controls.
Zones number 5 and 6 are 70-Volts outputs, these are compatible with 100-Volts speakers, but by
nature, these outputs will have a slightly reduced output level, meant for the 'quiet' zones in a multi-
zone system.
Zones number 5 and 6 are 70-Volts outputs, these are compatible with 100-Volts speakers, but by
nature, these outputs will have a slightly reduced output level, meant for the 'quiet' zones in a multi-
zone system.
MA247 has four balanced inputs on Euroblock. Microphone input 1 is optimized to be used with our
MICPAT-6, a selective 6-zone paging microphone, designed especially for use with the MA247. This
microphone is the master microphone. Maximum five of these microphones can be switched in
parallel on this single input!
MICPAT-6, a selective 6-zone paging microphone, designed especially for use with the MA247. This
microphone is the master microphone. Maximum five of these microphones can be switched in
parallel on this single input!
Microphone inputs 2 - 4 are designed to be used with our MICPAT-2 (2 zone groups) microphone or
any other microphone depending on the application. On the MA247, you can preset 2 paging
groups to be paged with mic 2 – 4.
any other microphone depending on the application. On the MA247, you can preset 2 paging
groups to be paged with mic 2 – 4.
Further the MA247 is equipped with 4 line inputs that can be selected via a rotary switch. As said
before, Zone 1 can have a different line source selected compared to zones 2 – 6.
before, Zone 1 can have a different line source selected compared to zones 2 – 6.
There are 6 different priority levels on the MA247. When any priority has been activated, integrated
24VDC supply output (max 0.6A) can switch priority relays of loudspeaker attenuators or other
devices.
24VDC supply output (max 0.6A) can switch priority relays of loudspeaker attenuators or other
devices.