AXIOM SW1800A ACTIVE SUBWOOFER

AXIOM SW1800A ACTIVE SUBWOOFER

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The SW1800A is a compact powered manifold subwoofer designed to provide sub-bass support for the compact AX800A compact line array and features some of the most advanced technologies for low-frequency reproduction. The manifold bandpass design uses manifold loading of the front side of the speaker cones to maximize the mutual coupling between the two drivers. This innovative configuration does not use any large resonant cavity to load the speakers, but very compact cavities in order to obtain advantages in terms of definition, both at the lowest end and the upper bass.

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The SW1800A is a compact powered manifold subwoofer designed to provide sub-bass support for the compact AX800A compact line array and features some of the most advanced technologies for low-frequency reproduction. The manifold bandpass design uses manifold loading of the front side of the speaker cones to maximize the mutual coupling between the two drivers. This innovative configuration does not use any large resonant cavity to load the speakers, but very compact cavities in order to obtain advantages in terms of definition, both at the lowest end and the upper bass.

TRANSDUCERS
The SW1800A subwoofer system is equipped with two high power 18” (460mm) transducers with 3” voice coils wound on aluminum formers for good heat dissipation.
The speaker cones feature a humidity-resistant treatment which makes the SW1800A very suitable for outdoor concert touring applications.

SONIC PERFORMANCE
The SW1800A represents an innovative subwoofer design that features solid low-frequency definition and a “punchy” feeling in the upper bass range. The combination of accuracy in acoustic transient response together with the use of the latest technology in transducer linearity, signal processing, and power amplifiers allows the SW1800A to deliver unprecedented low-frequency reproduction quality with a solid deep end, together with very fast and accurate bass response. It is designed to complement the AX800A line array in an approximate 4:1 ratio.

HARDWARE
The 15mm birch plywood enclosure features two 35mm pole mount sockets, one on the top and one on the side, allowing satellite speakers such as AX800A compact line array elements or any ED series point-source loudspeakers to be securely pole mounted on top of the subwoofer at an optimum height for best audience coverage.
Heavy-duty wheels and flush handles are provided for easy transportation and handling while matching stacking recesses and feet enable stable ground stacks to be assembled.

SIGNAL PROCESSING
The system processing is based on the CORE DSP platform designed by the PROEL R&D Laboratories using one of the most advanced SHARC DSP devices available for audio applications. It features 40bit, 96kHz floating point resolution and top-quality 24-bit AD/DA converters for perfect signal integrity, dynamic range in excess of 110dB, and 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 comprehensive remote control and networking capabilities.
The PRONET control software, working on a solid and reliable CANBUS based network protocol, provides an intuitive interface for the remote control of the whole audio system via the rear panel etherCON RJ45 connectors, with the possibility to equalize and delay individual devices, as well as setting driver protection parameters, and monitoring the status of the amplifier.
Four factory DSP presets are provided for when the SW1800A subwoofer is not connected to a network and allow for rapid and simple setup: Standard, for general purpose use; Infra Sub, as an additional very low frequency band or for sub-bass effects; Cardioid, for use in directional bass arrays; and User, allowing custom parameters to be designed in PRONET and recalled for specific situations when off-line.

POWER AMPLIFIER
The SW1800A is powered by a DA SERIES digital power module, 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 performance at the top of the range, such as superior sound definition at any audio frequency, very high dynamics for low-level signals, and very low distortion even at maximum power. The amplifier’s superior sound quality can be compared with top-of-the-range AB-class analog systems, while the DA modules feature higher dynamic range, very compact size, light weight, and efficiency above 90%.
The amplifier delivers 1000 watts into each driver individually. Input and link connections are via balanced 3-pin XLR connectors, and a ground lift switch is provided for hum-free operation.

 

Specifications
Specifications
SYSTEM
System’s Acoustic Principle Manifolded Band Pass
Frequency Response (±3dB) 36 Hz  –  115 Hz (Processed)
Maximum Peak SPL @ 1m 139 dB 
   
TRANSDUCERS
Type Two 18” (460mm) woofers, 3” (75mm) VC 
Cone High stiffness, water repellent
   
ELECTRICAL
Input Impedance 20 kΩ balanced, 10 kΩ unbalanced
Input Sensitivity  +4dBu / 1.25 V
Signal Processing CORE processing, 96kHz / 40bit floating point SHARC DSP, 24 bit  AD/DA converters
Direct access Controls 4 Presets (Standard/InfraSub/Cardioid/User), Network Termination, GND Link
Remote Controls PRONET control software
Network protocol CANBUS 
Amplifier Type Class D with SMPS, Variable Switching Frequency
Output Power 1000W + 1000W 
Mains Voltage Range (Vac) 230V ±15%  -  115 ±15%  50/60Hz (internally selectable)
IN / OUT Connectors Neutrik XLR-M / XLR-F
IN / OUT Network Connectors ETHERCON®(NE8FAV)
Mains Connectors PowerCon® TRUE1 - NAC3PX (In/Out)
Cooling Variable speed DC fan
   
ENCLOSURE & CONSTRUCTION
Physical Dimensions  
Width 570 mm (22.40”)
Height 960 mm (37.80”)
Depth 880 mm (34.65”)
Depth Including Wheels 1008 mm (39.70”)
Enclosure Material 15mm, reinforced phenolic birch
Paint High resistance, water based paint
Transport 4 heavy duty 100 mm (4") castors, 6 handles
Net Weight 70 Kg (154.30 lbs.)

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