dB Tech SUB 918 | 18in - 134dB | RDNet Active Subwoofer

dB Tech SUB 918  (dB Tech SUB-918)

Active 18-Inch Subwoofer

dBTechnologies SUB 918 is an active 18-inch subwoofer designed for powerful low-frequency extension in ground-stacked PA systems. With a 900W RMS / 1800W peak Class-D Digipro G3 amplifier, RDNet remote control, and a rugged plywood cabinet, it delivers high-output bass for live sound, mobile production, and installed audio applications.

dBTechnologies SUB 918 Competitive Differences

• 18-inch woofer with 4-inch voice coil and 134 dB max SPL
• 900W RMS / 1800W peak Digipro G3 Class-D amplification
• RDNet monitoring and remote control with Aurora Net software for Mac and Windows
• Dual M20 pole mounts allow vertical or horizontal deployment

dBTechnologies SUB 918 Description

The dBTechnologies SUB 918 is built for applications where strong low-end extension and controlled bass performance are needed. Its single 18-inch premium woofer is housed in a bass-reflex plywood enclosure, giving DJs, bands, venues, and production companies a powerful subwoofer option with manageable weight.

The onboard Digipro G3 Class-D amplifier provides 900W RMS / 1800W peak output with efficient performance and high sound pressure capability. A 28/56-bit DSP processor handles system control, with peak, thermal, and RMS limiting for protection during demanding events.

RDNet connectivity enables real-time monitoring and remote control through Aurora Net software for Windows and Mac. Onboard controls include subwoofer attenuation, polarity, delay adjustment up to 4.5 ms in 0.5 ms steps, and selectable crossover frequencies from 70 Hz to 110 Hz.

The plywood cabinet includes two integrated handles and is designed for both vertical and horizontal use. Two M20 pole mounts, one on the top and one on the side, support flexible full-range speaker placement using a standard M20 threaded pole.

SUB 918 Features

• Active 18-inch bass-reflex subwoofer
• Designed for ground-stacked applications
• 900W RMS / 1800W peak Digipro G3 Class-D amplifier
• 134 dB max SPL at 1 meter
• 18-inch woofer with 4-inch voice coil
• RDNet remote monitoring and control support
• Compatible with Aurora Net software for Mac and Windows
• 28/56-bit DSP controller
• 24-bit / 48 kHz AD/DA conversion
• Peak, thermal, and RMS limiter protection
• Variable crossover frequency from 70 Hz to 110 Hz
• Onboard delay control up to 4.5 ms in 0.5 ms steps
• Up to 21 ms delay available through Aurora Net
• Polarity switch
• Plywood cabinet construction
• Two M20 pole mounts for vertical or horizontal use

SUB 918 Specifications

• Speaker Type: Active subwoofer
• Frequency Response -10 dB: 42 Hz to cut frequency, crossover dependent
• Max SPL: 134 dB
• Low-Frequency Driver: 1 x 18 in woofer
• Voice Coil: 4 in
• Amplifier Technology: Digipro G3
• Amplifier Class: Class D
• Power Output: 900W RMS / 1800W Peak
• Controller: 28/56-bit DSP
• AD/DA Converter: 24-bit / 48 kHz
• Limiter: Peak, thermal, RMS
• Crossover Frequency: Variable 70 Hz, 80 Hz, 90 Hz, 100 Hz, 110 Hz
• Controls: Subwoofer attenuation, delay rotary, crossover rotary, polarity switch
• Signal Input: 1 x XLR female, 1 x USB data service
• Signal Output: 2 x XLR male
• Housing: Plywood
• Handles: 2 integrated handles
• Pole Mounts: 2 x M20, 1 top and 1 side
• Width: 28.3 in (720 mm)
• Height: 20.8 in (530 mm)
• Depth: 27.1 in (690 mm)
• Weight: 92.1 lb (41.8 kg)