WHY: Our belief is that deep, powerful, distortion-free bass should be accessible to everyone. For THE18 SUB PASSIVE VENTED, our goal was to create a subwoofer that delivers the uncompromising quality that ASCENDO is known for, at a more attainable price point while still addressing the needs of our distributors, dealers, and customers.
HOW: Our design philosophy emphasizes the perfect balance of deep extension, impactful punch, and precision. THE18 SUB Passive Vented features a carefully chosen tuning frequency of 25 Hz, ensuring optimal low-frequency reproduction without sacrificing performance. The vented enclosure enhances the bass extension, and our advanced engineering guarantees maximum performance via a high-temperature voice coil, linear suspension, and a robust magnetic motor system. Additionally, the enclosure is heavily braced to minimize resonances and ensure precise sound clarity, even at this price level.
WHAT: THE18 SUB PASSIVE VENTED is an 18” subwoofer crafted for durability and superior sound. It is designed for amplifiers with 1000 to 2000 W power output at 4 ohms and features a high-temperature 4" voice coil for long-term reliability. The cast frame eliminates resonance, ensuring high-fidelity bass. Whether used in a home theater or commercial setting, this subwoofer delivers exceptional sound pressure level (SPL) with in-room extension down to 20 Hz. For advanced subwoofer setups, THE18’s shallow design enables flexible placement behind screens, side walls, or in the back of the room.
At ASCENDO, we publish third-party verified performance metrics to give users confidence in your installation.
Pair with ASCENDO subwoofer amplifiers for unparalleled performance.
General
Speaker Type: 18” forward-firing, with 4” voice-coil
XMAX: 8 mm excursion each direction (16 mm linear), voice coil remaining in homogeneous magnetic field, linear and lower distortion
Principle: Vented
Passive | Active: Passive
Recommended Amplifiers: 1Ch DSP and 1Ch amplifier are required. Min. recommended amplifier: 63.2 Vrms, 89.4 Vpk, 15.8 A; equivalent to 1000 W @ 4 Ω, with correct RMS & peak limiter settings
Recommended ASCENDO Amplifiers: DSP4-6602
Measured Data
SPL Peak (Peak / Half Space 2pi): Measured Data 122 dB @ 28 Hz
Frequency Range: Measured Data (without DSP) 58 Hz - 400 Hz / -3 dB 22 Hz - 500 Hz / -12 dB
Power Handling: 1500 W
Efficiency: 95 dB / 1 W/m 2 pi
Impedance: 4 Ω
Directivity Horizontal x Vertical in deg°: 360°
Input
Input Terminal: 4-conductor Phoenix 12 AWG (3.3 mm²)
Dimensions & Weight
Dimensions (W/H/D) mm (Without Grille): 700 | 1012 | 300 (Height without feet: 1000)
Dimensions (W/H/D) inch (Without Grille): 27 9/16 | 39 13/16 | 11 13/16 (Height without feet: 39 6/16)
Packing Dimensions (W/H/D) mm: 830 | 1150 | 430
Packing Dimensions (W/H/D) inch: 32 11/16 | 45 4/16 | 16 15/16
Weight: 124.56 lbs | 56.5 kg
Gross Weight: 133.16 lbs | 60.4 kg
Design & Mounting
Enclosure: Internally braced MDF
Finish: Structural paint black
Mounting: Floorstanding with feet
WHY: Our belief is that deep, powerful, distortion-free bass should be accessible to everyone. For THE18 SUB PASSIVE VENTED, our goal was to create a subwoofer that delivers the uncompromising quality that ASCENDO is known for, at a more attainable price point while still addressing the needs of our distributors, dealers, and customers.
HOW: Our design philosophy emphasizes the perfect balance of deep extension, impactful punch, and precision. THE18 SUB Passive Vented features a carefully chosen tuning frequency of 25 Hz, ensuring optimal low-frequency reproduction without sacrificing performance. The vented enclosure enhances the bass extension, and our advanced engineering guarantees maximum performance via a high-temperature voice coil, linear suspension, and a robust magnetic motor system. Additionally, the enclosure is heavily braced to minimize resonances and ensure precise sound clarity, even at this price level.
WHAT: THE18 SUB PASSIVE VENTED is an 18” subwoofer crafted for durability and superior sound. It is designed for amplifiers with 1000 to 2000 W power output at 4 ohms and features a high-temperature 4" voice coil for long-term reliability. The cast frame eliminates resonance, ensuring high-fidelity bass. Whether used in a home theater or commercial setting, this subwoofer delivers exceptional sound pressure level (SPL) with in-room extension down to 20 Hz. For advanced subwoofer setups, THE18’s shallow design enables flexible placement behind screens, side walls, or in the back of the room.
At ASCENDO, we publish third-party verified performance metrics to give users confidence in your installation.
Pair with ASCENDO subwoofer amplifiers for unparalleled performance.
General
Speaker Type: 18” forward-firing, with 4” voice-coil
XMAX: 8 mm excursion each direction (16 mm linear), voice coil remaining in homogeneous magnetic field, linear and lower distortion
Principle: Vented
Passive | Active: Passive
Recommended Amplifiers: 1Ch DSP and 1Ch amplifier are required. Min. recommended amplifier: 63.2 Vrms, 89.4 Vpk, 15.8 A; equivalent to 1000 W @ 4 Ω, with correct RMS & peak limiter settings
Recommended ASCENDO Amplifiers: DSP4-6602
Measured Data
SPL Peak (Peak / Half Space 2pi): Measured Data 122 dB @ 28 Hz
Frequency Range: Measured Data (without DSP) 58 Hz - 400 Hz / -3 dB 22 Hz - 500 Hz / -12 dB
Power Handling: 1500 W
Efficiency: 95 dB / 1 W/m 2 pi
Impedance: 4 Ω
Directivity Horizontal x Vertical in deg°: 360°
Input
Input Terminal: 4-conductor Phoenix 12 AWG (3.3 mm²)
Dimensions & Weight
Dimensions (W/H/D) mm (Without Grille): 700 | 1012 | 300 (Height without feet: 1000)
Dimensions (W/H/D) inch (Without Grille): 27 9/16 | 39 13/16 | 11 13/16 (Height without feet: 39 6/16)
Packing Dimensions (W/H/D) mm: 830 | 1150 | 430
Packing Dimensions (W/H/D) inch: 32 11/16 | 45 4/16 | 16 15/16
Weight: 124.56 lbs | 56.5 kg
Gross Weight: 133.16 lbs | 60.4 kg
Design & Mounting
Enclosure: Internally braced MDF
Finish: Structural paint black
Mounting: Floorstanding with feet
