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Axium Bus
Axium Bus provides inter amplifier & Keypad control and monitoring.
The Bus is protected from shorts to both 0V and +12VDC.
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Bass, Treble, Balance, and Loudness controls
Bass, Treble, and Balance controls may be accessed via the front panel or RS232. The
loudness control - which is a low frequency boost whose level is dependent on volume
– is controlled via the AMPCTRL set up utility (RS232)
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Expansion Bus
Data, IR, Amp-On & Audio Sources are interconnected via the expansion bus
to other Axium amplifiers, thus simplifying the Axium amplifier stack wiring.
The expansion bus uses the simple 20-way ribbon cable connector system
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32 Zones
32 zones of control is available. On the AX250i each Zone must be different, however
in a multiple amplifier stack same Zone amplifiers are possible – they simply mimic
every parameter.
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Zone Tracking
A Zone may be programmed to track one other Zone. When Zone tracking is selected,
the source selection is tied together, but Standby, Mute, and volume control are
independent. This is useful for closely coupled audio areas where it is advantageous to
have different volume control but the same source.
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Maximum volume limiting
A volume limit may be set on any Zone, typically this is to prevent reckless use of the
system, or prevent destruction of speakers when powered by a slave amplifier.
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Global IR commands
There is a range of Global IR commands available for turning All amplifiers either On,
Off, or selecting various audio sources. There are also Force and Release Preset
commands that invoke a user programmed Amplifier preset.
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Global Preset
One Preset may be programmed for every Zone, wherein any controlled parameter
may be set. A Preset may be invoked either by the Preset IR command, RS232, or by
a contact closure at the panels “preset input utility” connector on the rear panel. When
a preset is invoked all Zones go to their programmed preset state. Upon release from
the preset the amplifier Zone returns to it’s previous state. A typical application is
phone paging.
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Firmware upgradeable
The AX250i’s microcontroller may be updated with the latest operational firmware via
the RS232 port and a boot-loader program. The ability to enhance the functionality of
installed Axium product’s provides a degree of future proofing, and flexibility.
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Toroidal transformer power supply
An impressive toroidal transformer ensures stable power supply performance and
minimal magnetic field interference.
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Restore factory defaults
Remove AC power, push and hold down Function & Tuner Keys and reconnect AC
power. The Amplifier will be reset to factory defaults, and memory cleared.
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