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dB Technologies SUB 615


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Remarkable Audio Performance

Impressively precise low-end reproduction. Featuring a 600W RMS Class-D power amplifier with SMPS, the dB Technologies SUB 615 Active Subwoofer delivers outstanding sound pressure levels. Reaching 131dB, it provides optimal definition and sound reproduction, resulting in hard-hitting bass that stays true to your source audio. It’s ideal for a range of applications, from live performances for musicians and DJs, to houses of worship and more.

Clever Design

Use with ease and accuracy. The control panel features a polarity inversion switch for calibrating your sound for optimised audio performance. Need that extra punch? The Sub BOOST mode switch will provide an extra burst of those sultry low frequencies. You can also choose to operate the SUB 615 in mono or stereo mode, as well as including Link or x-Over balanced stereo output modes.

The bass-reflex design provides added clarity to the bottom-end response. It is ideal as the basis for any PA system, ideal for use when configured with two full range speakers. The X-Over signal mode is designed to feed both left and right speakers, eliminating any external processing or crossover for added convenience.

Robust Enclosure

Sturdy and lightweight. The physicality of the SUB 615 provides a strong, durable cabinet that can be transported and set up easily. Its compact size is perfect for portability but doesn’t compromise on the sound quality at all. The enclosure itself is constructed from premium-grade wood, finished with a scratch-resistant black covering for optimal durability. Stacking is made easy by the design of the top side, also featuring an M20 pole mount thread for stacking full-range speakers.


  • Ergonomic, lightweight, compact, and versatile design
  • Suitable for both indoor and outdoor applications
  • Reliable and silent 600W RMS class-D SMSP amplifier
  • Rich and dynamic 15” transducer
  • Delivers outstanding sound pressure levels (up to 131dB)
  • Clean and precise low-end reproduction
  • M20 pole-mount thread for stacking full-range speakers
  • Selectable stereo balanced input
  • Link or crossover balanced stereo output mode
  • Compact and sturdy plywood cabinet with full metal grille
  • Scratch-resistant black covering
  • Dedicated DSP controls – Polarity, Output Mode, and EQ Button (Subwoofer Mode)


Technical & Acoustic Data

  • Speaker Type: Active Subwoofer
  • Frequency Response (-10dB): 42 Hz – 124 Hz
  • Maximum SPL (1m): 131 dB
  • Directivity: Omnidirectional
  • LF Driver Diameter: 15”
  • LF Driver Voice Coil: 2.5”


  • Amplifier Technology: SMSP Digital Amplifier
  • Amplifier Class: Class-D
  • RMS Power: 600 W
  • Peak Power: 1200 W


  • Controller: 28/56-Bit DSP
  • Limiter:
    • Peak
    • Thermal
    • RMS
  • Controls:
    • Subwoofer Level
    • Outputs Mode
    • Polarity
    • Subwoofer Mode


  • Signal Input: 2 x XLR (Balanced)
  • Signal Output: 2 x XLR (Balanced)

Physical Specifications

  • Housing: Plywood
  • Grille: Full Metal Grid
  • Pole Mount: M20
  • Width: 16.92” / 430 mm
  • Height: 22.83” / 580 mm
  • Depth: 23.62” / 600 mm
  • Weight: 56.22 lbs / 25.5 kg

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