Active Subwoofer
SUB618 features a 600W RMS Class D Power Amplifier with SMPS and is equipped with a 18” transducer.
The system delivers outstanding sound pressure levels (up to 133dB) in spite of its compact housing, while providing a clean, impressively precise low-end reproduction.
Sub 600s’ outstanding audio performance allow user to build most of the PA systems with 1 single sub and 2 full range speakers, avoiding any external processing or crossover thanks to a balanced X-over signal to left and right speakers.
Controls on the amp panel allow user to operate with Mono or Stereo audio feed, activate polarity inversion and choose Outputs link mode (True Bypass or X-over).
Whenever a further punch is needed, a low-frequencies boost EQ can be set thanks to the Sub Mode switch.
The series comes with a full grille design in a lightweight  wood cabinet (total weight 31 kg /68 Lbs) strengthened with a hardwearing, scratch-resistant black covering. Carved side handles enhance portability. The design of the top side eases subs stacking in larger systems and features a M20 pole mount thread to stack full-range speakers.
 
Technical Data 
Speaker Type: Active Subwoofer
Acoustical data
Frequency Response [-10dB]: 35 – 130 Hz
Max SPL (1 m): 133 dB
Directivity: omnidirectional
LF: 18″
LF Voice Coil: 2.5″
Amplifier
Amp Technology: SMSP digital amplifier
Amp Class: Class D
RMS Power: 600 W
Peak Power: 1200 W
Processor
Controller: 28/56 bit DSP
Limiter: Peak, Thermal, RMS
Controls: Subwoofer level, Outputs mode, Polarity, Subwoofer mode
Input
Signal Input: 2x XLR (balanced)
Signal Output: 2x XLR (balanced)
Mechanics
Housing: Plywood
Grille: Full metal grid
Pole Mount: M20
Width: 500 mm (19.69 in)
Height: 625 mm (24.60 in)
Depth: 690 mm (27.17 in)
Weight: 31.1 kg (68.57 lbs)