dB Technologies SUB618

dB Technologies SUB618 – Powerful 18” active subwoofer with 600 W RMS and precise low-frequency reproduction
The dB Technologies SUB618 is a compact yet extremely capable 18” active subwoofer that delivers an impressive 133 dB max SPL. It is equipped with a 600 W RMS Class-D amplifier featuring SMPS technology and an efficient bass-reflex design that ensures clean, deep, and controlled bass reproduction for both live and installed applications.

The SUB618 can be used as the core of a 2.1 system, where a single subwoofer drives two top speakers via balanced X-Over outputs—without any external crossovers or processors. On the rear panel, there are options for mono/stereo input, polarity reversal, and linking in True Bypass or X-Over mode. When extra low-end is needed, the Sub Mode switch is activated for extra punch at the bottom end.

The rugged wooden cabinet features a scratch-resistant black finish and a full metal grille that protects the drivers. Thanks to its relatively low weight (31.1 kg), integrated side handles, and an M20 stand mount, the SUB618 is easy to transport and quick to set up. The top plate design also makes it easy to stack multiple SUB618s in larger PA systems.

Features
18” active subwoofer with bass-reflex design
600 W RMS Class D amplifier (1200 W peak)
Max SPL: 133 dB
Compact and lightweight design for its power class
Balanced crossover outputs for easy 2.1 system setup
Sub Mode for extra low-frequency boost
Mono/stereo selector, polarity switch, and bypass/crossover link
Rugged plywood cabinet and full metal grille
M20 mounting point for top speakers

Specifications
Type: Active subwoofer
Frequency response (-10 dB): 35–130 Hz
Max SPL: 133 dB
LF driver: 18”
Voice coil: 2.5”
Amplifier: Class D, 600 W RMS / 1200 W Peak
DSP: 28/56-bit
Limiting: Peak, Thermal, RMS
Controls: Subwoofer Level, Output Mode, Polarity, Subwoofer Mode
Inputs: 2 × XLR (balanced)
Outputs: 2 × XLR (balanced)
Cabinet: Plywood
Grille: Full metal grille
Stand mount: M20
Dimensions (W × H × D): 500 × 625 × 690 mm
Weight: 31.1 kg