HOW: From the very first thunderous vibration to the subtlest low-frequency nuances, the THE18 SUB PRO unlocks an entirely new realm of audio immersion. Its innovative vented construction, paired with a precision-tuned 27Hz response, produces bass that doesn’t just reach your ears—it resonates through your body, blending raw power with meticulous accuracy. Despite its commanding output, this subwoofer remains agile, delivering tight, articulate bass that transitions seamlessly.
The cutting-edge double-gap motor technology enhances linearity and speed, ensuring powerful, distortion-free lows that never compromise detail or musical integrity. Every beat isn’t just audible—it’s visceral. And with our dedication to proof over promises, you can rely on independent lab-tested specs to reflect the true performance you’ll hear (and feel) in your own listening environment.
WHAT: THE18 SUB PRO redefines performance, proving just how far an 18-inch driver can go. Driven by a 3 kW built-in amplifier and backed by a 6 kW power supply, it conquers even the most intense audio demands—whether thunderous cinematic effects or intricate musical passages—with effortless authority. Every detail, from subterranean movie effects to the deepest bass notes in music, is reproduced with astonishing precision.
When combined with our infrasonic subwoofers, the THE18 SUB PRO ACTIVE VENTED elevates your system into a sub-20 Hz powerhouse, delivering ultra-deep bass without sacrificing the clarity and finesse for which ASCENDO is known.
To experience its full capabilities, we recommend pairing it with our purpose-built amplifiers—because extraordinary bass deserves uncompromising power and control.
General
Speaker Type: 18” forward-firing, dual gap motor structure - 2 inner and 2 outer voice coils, neodymium motor
XMAX: 17.5 mm excursion each direction (35 mm linear), voice coil remaining in homogeneous magnetic field, linear and lower distortion
Principle: Vented
Passive | Active: Active, built in DSP Amplifier
Measured Data
SPL Peak (Peak / Half Space 2pi): Measured Data 137 dB @ 63 Hz
Frequency Range: Measured Data (Without DSP) 60 Hz - 400 Hz / -3 dB 23 Hz - 500 Hz / -12 dB
Directivity Horizontal x Vertical in deg°: 360°
Power Specifications & Features
Output Power: 3000 W
Power Supply Requirements: 100-240 VAC, 50-60 Hz (Operating: 90-265 VAC)
Power Consumption
230 VAC - 1/8 rated power (4 Ohm)
3.2 A / 490 W
120 VAC - 1/8 rated power (4 Ohm)
6.2 A / 490 W
Idle: 0.5 A / 61 W
Automatic Power Off
Trigger
Connections
Input: 1 x XLR Balanced
Output: 1 x XLR Balanced Link
Power: Neutrik powerCON True 1 in-out
Communications: 2 x RJ45 / Daisy Chain
Signal Processing & Control
Protection Features: Turn-on transients, Over-heating, DC, RF, Short-circuit, mismatched loads, ICL™, PMS™
Controller: OCS Software Control
Converter: High Performance 96 kHz / 24 bits AD/DA converters, 64 bit double-precision 96 kHz DSP process
Input IIR EQ Section: Gain, Mute, Phase inversion, Delay (up to 116 ms, 40 m), 10 EQ filters (Parametric, Shelving, LP, HP, BP, SB, AP)
Dimensions & Weight
Dimensions (W/H/D) mm (Without Grille): 530 | 1124.5 | 380 (Height without feet: 1100) (Depth with plug: 400)
Dimensions (W/H/D) inch (Without Grille): 20 6/7 | 44 1/4 | 15 (Height without feet: 43 1/3) (Depth with plug: 15 3/4)
Packing Dimensions (W/H/D) mm: 700 | 1250 | 500
Packing Dimensions (W/H/D) inch: 27 5/9 | 49 1/5 | 19 2/3
Weight: 123.46 lbs | 56 kg
Gross Weight: 143.3 lbs | 65 kg
Design & Mounting
Enclosure: Internally braced MDF
Finish: Structural paint black
Mounting: Floorstanding with feet
Grille: The THE18 SUB PRO ACTIVE VENTED is supplied with a front cover as standard
HOW: From the very first thunderous vibration to the subtlest low-frequency nuances, the THE18 SUB PRO unlocks an entirely new realm of audio immersion. Its innovative vented construction, paired with a precision-tuned 27Hz response, produces bass that doesn’t just reach your ears—it resonates through your body, blending raw power with meticulous accuracy. Despite its commanding output, this subwoofer remains agile, delivering tight, articulate bass that transitions seamlessly.
The cutting-edge double-gap motor technology enhances linearity and speed, ensuring powerful, distortion-free lows that never compromise detail or musical integrity. Every beat isn’t just audible—it’s visceral. And with our dedication to proof over promises, you can rely on independent lab-tested specs to reflect the true performance you’ll hear (and feel) in your own listening environment.
WHAT: THE18 SUB PRO redefines performance, proving just how far an 18-inch driver can go. Driven by a 3 kW built-in amplifier and backed by a 6 kW power supply, it conquers even the most intense audio demands—whether thunderous cinematic effects or intricate musical passages—with effortless authority. Every detail, from subterranean movie effects to the deepest bass notes in music, is reproduced with astonishing precision.
When combined with our infrasonic subwoofers, the THE18 SUB PRO ACTIVE VENTED elevates your system into a sub-20 Hz powerhouse, delivering ultra-deep bass without sacrificing the clarity and finesse for which ASCENDO is known.
To experience its full capabilities, we recommend pairing it with our purpose-built amplifiers—because extraordinary bass deserves uncompromising power and control.
General
Speaker Type: 18” forward-firing, dual gap motor structure - 2 inner and 2 outer voice coils, neodymium motor
XMAX: 17.5 mm excursion each direction (35 mm linear), voice coil remaining in homogeneous magnetic field, linear and lower distortion
Principle: Vented
Passive | Active: Active, built in DSP Amplifier
Measured Data
SPL Peak (Peak / Half Space 2pi): Measured Data 137 dB @ 63 Hz
Frequency Range: Measured Data (Without DSP) 60 Hz - 400 Hz / -3 dB 23 Hz - 500 Hz / -12 dB
Directivity Horizontal x Vertical in deg°: 360°
Power Specifications & Features
Output Power: 3000 W
Power Supply Requirements: 100-240 VAC, 50-60 Hz (Operating: 90-265 VAC)
Power Consumption
230 VAC - 1/8 rated power (4 Ohm)
3.2 A / 490 W
120 VAC - 1/8 rated power (4 Ohm)
6.2 A / 490 W
Idle: 0.5 A / 61 W
Automatic Power Off
Trigger
Connections
Input: 1 x XLR Balanced
Output: 1 x XLR Balanced Link
Power: Neutrik powerCON True 1 in-out
Communications: 2 x RJ45 / Daisy Chain
Signal Processing & Control
Protection Features: Turn-on transients, Over-heating, DC, RF, Short-circuit, mismatched loads, ICL™, PMS™
Controller: OCS Software Control
Converter: High Performance 96 kHz / 24 bits AD/DA converters, 64 bit double-precision 96 kHz DSP process
Input IIR EQ Section: Gain, Mute, Phase inversion, Delay (up to 116 ms, 40 m), 10 EQ filters (Parametric, Shelving, LP, HP, BP, SB, AP)
Dimensions & Weight
Dimensions (W/H/D) mm (Without Grille): 530 | 1124.5 | 380 (Height without feet: 1100) (Depth with plug: 400)
Dimensions (W/H/D) inch (Without Grille): 20 6/7 | 44 1/4 | 15 (Height without feet: 43 1/3) (Depth with plug: 15 3/4)
Packing Dimensions (W/H/D) mm: 700 | 1250 | 500
Packing Dimensions (W/H/D) inch: 27 5/9 | 49 1/5 | 19 2/3
Weight: 123.46 lbs | 56 kg
Gross Weight: 143.3 lbs | 65 kg
Design & Mounting
Enclosure: Internally braced MDF
Finish: Structural paint black
Mounting: Floorstanding with feet
Grille: The THE18 SUB PRO ACTIVE VENTED is supplied with a front cover as standard
