POWER AMPLIFIERS
The SW18A is powered by DA SERIES digital power modules, a new generation of CLASS D power amplifier with digitally-controlled SMPS.
The innovative technology used for these amplifiers (including also the use of a variable switching frequency) offers performances at the top of
the range, such as a superior sound definition at any audio frequency, very high dynamics also for low level signals and very low distortion even at
the maximum power The superior sound quality can be compared with top-of-the-range AB-class analog systems, while the DA modules feature
a higher dynamics, very compact size and light weight and efficiency above 90%. The two DA modules employed for powering the SW18A deliver
in an ultra-compact package a maximum power of 4000W.
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.
PRONET AX
PRONET AX software has been developed in collaboration with sound engineers and sound designers, in order to offer an “easy-to-use” tool to
setup and manage your audio system. With PRONET AX you can visualize signal levels, monitor internal status and edit all the parameters of each
connected device.
Download the PRONET AX app from the AXIOM website at http://www.axiomproaudio.com/ clicking on downloads section of the product.
The AXIOM active loudspeaker devices can be connected in a network and controlled by the PRONET AX software, for the network connection the
PROEL
USB2CAN
(with 1-port) or the
USB2CAN-D
(with 2-port) converter optional accessory is needed.
PRONET AX network is based on a “bus-topology” connection, where the first device is connected to the network input connector of the second
device, the second device network output is connected to the network input connector of the third device, and so on. To ensure a reliable
communication the first and the last device of the “bus-topology” connection must be terminated.
This can be done by pressing the “TERMINATE”
switch near the network connectors in the rear panel of the first and the last device.
For the network connections simple RJ45 cat.5 or cat.6
ethernet cables can be used (please don’t confuse a ethernet network with a PRONET AX network these are completely different and must be
fully separated also both use the same kind of cable).
Assign the ID number
To work properly in a PRONET AX network each connected device must have a unique identifier number, called ID. By default the USB2CAN-D PC
controller has ID=0 and there can be only one PC controller. Every other device connected must have its own unique ID equal or greater than 1:
in the network cannot exist two devices with the same ID.
In order to correctly assign a new available ID to each device for working properly in a Pronet AX network, follow these instructions:
1.
Switch off all the devices.
2.
Connect them correctly to the network cables.
3.
“TERMINATE” the end device in the network connection.
4.
Switch on the first device keep pressed “PRESET” button on the control panel.
5.
Leaving the previous device switched on, repeat the previous operation on the next device, until the latest device is turned on.
The “Assign ID” procedure for a device makes the internal network controller to perform two operations: reset the current ID; search the first free
ID in the network, starting from ID=1. If no other devices are connected (and powered on), the controller assume ID=1, that is the first free ID,
otherwise it searches the next one left free.
These operations ensure that every device has it’s own unique ID, if you need to add a new device to the network you simply repeat the operation
of step 4. Every device maintains its ID also when it is turned-off, because the identifier is stored in the internal memory and it is cleared only by
another “Assign ID” step, as explained above.
With the network made always of the same devices the assigning ID procedure must be executed only the first time the system is turned on.
For more detailed instruction about PRONET see the PRONET AX USER’S MANUAL included with the software.
CARDIOID PRESET
The cardioid preset must be used in a sub array of three SW18A. Two box must be oriented towards the audience and one must be turned in the
opposite direction (typically the box in the centre of the array). The bottom and the top boxes must have the STANDARD PRESET, the box in the
middle must have the CARDIOID PRESET. The audio signal sent to all boxes is the same.
The CARDIOID PRESET has the same response of the STANDARD PRESET, but to obtain the maximum cancellation on the back side of the array it
has the phase inverted and a proper level and delay setting.
The figure below shows two typical displacement of the array. The first with all the boxes in horizontal position for a total height of 1500 mm and
a width of 650 mm. The second one with all the boxes in vertical position for a total height of 650 mm and a width of 1500 mm.
NOTES:
When placing the cardioid array keep a distance to walls or other obstacles of at least 80 cm (2.6 ft) in order not to affect the radiation of the
reversed cabinet.
When placing multiple cardioid arrays keep a distance between them of at least 140 cm (4.6 ft) for vertical placement, or 100 cm (3.3 ft)for
horizontal placement, in order to maximize the combined radiation of whole arrays.
