I/O AND CONTROL OPERATIONS
MAINS IN -
Powercon® NAC3FCA power input connector (blue). To switch the amplifier on, insert the Powercon®
connector and turn it clockwise into the ON position. To switch the amplifier off, pull back the switch on the
connector and turn it counter-clockwise into the POWER OFF position.
WARNING!
In the case of product failure or fuse replacement, disconnect the unit completely from the
mains power. The power cable must only be connected to a socket corresponding to the specifications
indicated on the amplifier unit. The power supply must be protected by a suitably rated thermo-magnetic
breaker.
Preferably use a suitable switch to power on the whole audio system leaving the Powercon®
always connected to each speaker, this simple trick extend the life of the Powercon® connectors.
MAINS OUT -
Powercon® NAC3FCB power output connector (grey). This is
connected in parallel with the MAINS ~ / IN. The maximum load applicable
depends on the mains voltage. With 230V~ we suggest to link a maximum of 5
ED120A loudspeakers, with 120V~ we suggest to link a maximum of 3 ED120A
loudspeaker.
INPUT -
Audio signal input with locking XLR connector. It has a fully
electronically balanced circuitry including AD conversion for the best S/N ratio
and input headroom.
LINK -
A direct connection from the input connector to link other speakers with
same audio signal.
ON -
This LED indicates power on status.
SIGN/LIMIT -
This LED lights in green to indicate the presence of the signal and lights in red when an internal
limiter reduces the input level.
GND LIFT -
This switch lift the ground of the balanced audio inputs from the earth-ground of the amplifier module.
PRESET BUTTON -
This button has two function:
1)
Pressing it while powering on the unit:
ID ASSIGN
the internal DSP assigns a new ID to the unit for the PRONET remote
control operation. Each loudspeaker must have a unique ID to be
visible in the PRONET network. When you assign a new ID, all the
other loudspeakers with the ID already assigned must be ON and
connected to the network.
2)
Pressing it with the unit ON you can select the DSP PRESET. The selected PRESET is
indicated by the corresponding LED:
STANDARD
Suited for a typical use of a standalone loudspeaker for any sound
reinforcement situation.
LOW CUT
This PRESET is the same of the previous with an high pass filter
(110Hz @ 48 dB/oct.) to use the loudspeaker in combination with a
subwoofer.
MONITOR
Suited for the use of the system as a stage monitor. In this preset the
deep lows are attenuated in order to compensate the floor postion,
the mid-low frequencies are enhanced for a better presence and the
mid-high frequencies are reduced for an improved feedback rejection.
USER
This LED lights when the USER PRESET is loaded. This preset corresponds to USER MEMORY no. 1 of the DSP and, as a factory
setting, it’s the same to STANDARD. If you want to modify it, you have to connect the unit to a PC, edit the parameters with
PRONET software and save the PRESET into USER MEMORY no. 1.
Note: see also the PRONET example further on this manual.
NETWORK IN/OUT -
These are a standard RJ45 CAT5 connectors (with optional NEUTRIK NE8MC RJ45 cable connector carrier), used for PRONET
network transmission of remote control data over long distance or multiple unit applications.
TERMINATE -
In a PRONET network the last loudspeaker device must be terminated (with an inner load resistance) especially in a long run cabling:
press this switch if you want to terminate the unit.
POWER AMPLIFIERS
Powering the loudspeaker drivers is a well-proven DA series Class D amplifier module used in many of the Axiom powered loudspeaker products,
with audio quality that is comparable to some of the best analogue Class A-B designs, but with the benefit of lower weight and better than 90%
efficiency. The output power is optimised specifically to the drive units, sharing 900 watts between both woofers and delivering 200 watts to the
high frequency band. The DA series amplifier delivers superior definition at all frequencies, and very high dynamic range with low distortion even
at maximum level, so your sound remains clean and dynamic even when loud.
SIGNAL PROCESSING
The system processing is based on the CORE DSP platform, which has been designed by the PROEL R&D Laboratories using one of the most
advanced SHARC DSP for audio application. It features 40bit, 96kHz floating point resolution and high quality 24bit AD/DA converters, for a perfect
signal integrity, a dynamic range in excess of 110dB and a superior sonic performance. Thanks to its massive processing power, the CORE platform
is capable of providing the most sophisticated algorithms for speaker processing, together with remote control and networking capability.
The PRONET AX control software, working on a solid and reliable CANBUS based network protocol, provides an intuitive interface for the remote
control of the whole system, with the possibility of eqing, delaying, increasing the protections and monitoring the status of the amplifier.