Axiom · Stage Equipment

Active, Dual-18" Very High-Output, Manifolded Transmission Line, Powered, CORE Processed, Subwoofer System

Item SW218XA · Made in Italy

Final Stock

A powered dual-18 in transmission-line subwoofer with Tetracoil drivers and a 4,000 W amplifier, reaching 143 dB peak for touring and festivals.

Where to Buy

Axiom systems are specified, sold and installed by authorized integrators and installers in the USA and Canada.

Request a System Quote
Find an integrator or installer near you

Details

About this product.

Output

The SW218XA adds 3 dB of peak output, for top-level concert touring and festivals with heavy low-end demands such as hard rock and electronic music. It offers twice the output of the SW218A in the same size enclosure. Rental companies gain more total SPL from the same inventory.

Tetracoil drivers

The 4 in Tetracoil uses two voice coils wound on both sides of one former, in two axially separated magnetic gaps. This allows extreme excursion of the cone and suspension.

Amplifier and build

A 4,000 W Class D amplifier produces up to 143 dB peak with extended low-frequency response. It suits high-level dance clubs and touring systems that need strong sub-bass. CORE DSP processing allows remote control of key parameters and full system monitoring.

Reinforced birch plywood cabinets have stacking feet and heavy-duty wheels.

Version
Active (powered, built-in amplifier). The A in the model number means Active; the passive version is SW218XP.
SYSTEM
System’s Acoustic Principle
Manifolded Transmission Line
Frequency Response (±3dB)
30 Hz - 92Hz (Processed)
Maximum Peak SPL @ 1m
143 dB
TRANSDUCERS
Type
Two 18” (460mm), 4” (100mm) VC
Cone
Water repellent cone and epoxy coated plates
Voice Coil Type
3.9 in (100mm) (4in) Tetracoil dual voice coil, equivalent to a single coil diameter larger than 6 in (152mm) (>6in)
Suspension
Ultra linear suspension behavior
ELECTRICAL
Input Impedance
20 kΩ balanced, 10 kΩ unbalanced
Input Sensitivity
+4dBu / 1.25 V
Signal Processing
CORE processing, 96kHz / 40bit floating point SHARK DSP, 24 bit AD/DA converters
Direct access Controls
4 Presets (Standard/InfraSub/Cardioid/ User), Network Termination button, GND Link button
Remote Controls
PRONET control software
Network protocol
CANBUS
Amplifier Type
Class D with SMPS and PFC, Variable Switching Frequency
Output Power
4000W
Mains Voltage Range (Vac)
90 - 260V 50/60Hz
IN / OUT Connectors
Neutrik XLR-M / XLR-F
IN / OUT Network Connectors
ETHERCON®(NE8FAV)
Mains Connector
PowerCon® (NAC3MPA)
Cooling
Variable speed DC fan
ENCLOSURE & CONSTRUCTION
Width
47.87 in (1215 mm)
Height
23.24 in (590 mm)
Depth
37.43 in (950 mm)
Depth Including Wheels
41.37 in (1050 mm)
Enclosure Material
0.59 in (15mm), reinforced phenolic birch
Paint
High resistance, water based paint
Wheels
4 heavy-load 3.9 in (100mm) ø
Net Weight
267.2 lb (121.2 kg)

Warranty

Standard
2 years from the date of purchase at an authorized Proel North America dealer
Extended
2 more years (4 in total) when registered on proel.com within 6 months of purchase
Details
Terms, registration links and claims: proelnorthamerica.com/pages/support