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SPL 12 Integrated self powered loudspeaker system 

Applications:

  • Concert Sound Reinforcement
  • Auditorium Installations
  • Dance Clubs
  • Houses of Worship
  • Theatre and Film
  • Corporate A / V

Features:

  • Fully integrated active 2 way amplifier/speaker combination
  • High power and low distortion provide true sonic accuracy
  • ISC system protection for safe high power output
Easy, flexible setup - just connect a signal and AC power

Other powered Loudspeakers:

SPL 8H

SPL 12

SPL SUB15

SPL SUB18

About the SPL12
The ARX SPL12 is an integrated active (bi-amped) 2 way speaker and amplifier combination. Low frequencies are handled by a new 12” (305mm) driver, and high frequencies by a FerroCooled* 50mm voice coil driver mounted on our new 90° x 40° consistent beamwidth horn flare.
The cabinet is built throughout from premium grade void free plywood, with a welded steel mesh protective grille, and is painted in multiple textured coats of catalysed polyurethane.
Reinforced mounting plates are already fitted, allowing flying hardware to be factory fitted as required.

Inside Information
The amplifier design inside the SPL12 uses existing proven analog amplifier technology for predictable operation in all professional applications.
Its transformer based power supply and Mosfet drive circuitry both enable a reduced parts count for long term reliability. Plus, with their inherent self regulation, Mosfets are accepted as being the most thermally reliable and predictable amplifier output stage available.
There are deliberately no user adjustable controls for the SPL12. The system provides a flat response, since all equalising is intended to be done from the source - typically a mixer and /or graphic EQ. The drivers and the output of the amplifier section form a perfectly matched composite unit that is designed to do only one thing, and do it extremely well.

Other Features
Locking AC power connectors. By using the Neutrik PowerCon design, the power connector locks to the cabinet, avoiding the problem of a connector vibrating loose during a performance.
Noiseless turn on/turn off.
An extra auxiliary AC power output is fitted as standard, so that systems can be powered in a serial/daisy chain layout rather than radially from a central point, thus reducing the cabling required.

Benefits
The acoustic and practical benefits of this amplifier/speaker combination are many:

  • Improved speaker response. The close-coupled design delivers greater actual power at the speaker and improves the damping factor. Frequency response is optimised and phase response is idealised with no potential for mis-adjustment
  • Thermal reliability. Thanks to our unique heat exchange/cooling design, the harder the system is driven, the more efficiently the heat exchanger operates.
  • There is no power loss caused by long runs of loudspeaker cable which can typically be 30 metres (100’) or more. All the amplifier power is delivered to the speaker.
  • An elegant all in one solution - amp, processor, speaker are combined in the one cabinet. There are no amp racks to store and cool, no heavy speaker cabling to run.
  • Reduced number of connections contributes to inherent low noise, and greatly reduces the possibility of ground loops.
T E C H N I C A L || S P E C I F I C A T I O N S

SPL 12 rear panel layout
SPL 12 Rear Panel layout. Click on image to see larger version (50K)

Frequency response 50Hz - 20KHz +/– 4dB
Loudspeaker type
Low Frequency 12" 305mm 8 Ohm
High Frequency 50mm voice coil 16 Ohm; FerroCooled
HF Flare type Flat front Consistent Beamwidth
Size 610H x 405W x 395D, 7.5° taper to back
Weight 35Kg
Dispersion Nominal 90° H x 40° V

Input Connector
3 pin Female XLR, polarity Pin 2 +, Pin 3 –, Pin 1 Ground
Input Impedance 44K Balanced (electronic)
Nominal input level 0dB for nominal rated amplifier outputs
Input Loop Connector
3 pin Male XLR, polarity Pin 2 +, Pin 3 –, Pin 1 Ground

Crossover Frequency 1500Hz
Crossover Type 24dB Linkwitz Riley Filter type
Highpass Filter –3dB @ 55Hz 24dB Linkwitz Riley
Maximum SPL 130 peak, 127 continuous
Amplifier power
LF 300 Watts RMS 8 ohms, 525 peak,
HF 150 Watts RMS 16 ohms, 300 peak
Amplifier type Lateral Mosfet

THD <.01%
Loudspeaker protection
ISC amplifier anti-clipping circuitry, Relay muted input, Relay switched output sensing DC and RF error
Status LEDs AC power, HF Protect, LF Protect

AC Power 110V / 220V / 240V 50 / 60Hz
AC Power Input Neutrik PowerCon type NAC 3 FCA
AC Power Loop Neutrik PowerCon type NAC 3 FCB
AC Power protection User resettable external circuit breaker
AC Wattage Max 550 VA (550 Watts)
Transformer type Toroidal

SPL Series Q & A | SPL Wiring info

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