dB Technologies SUB 618 - 18” 600W RMS Active Subwoofer

dB Technologies SUB 618 - 18” 600W RMS Active Subwoofer

The dB Technologies SUB 618 is a powerful active bass-reflex subwoofer designed for sound professionals requiring deep, clean, and precise bass reproduction. Equipped with a Class D amplifier with SMPS power supply and a power of 600 W RMS (1200 W peak), this 18” subwoofer delivers a sound pressure level of up to 133 dB while maintaining compact dimensions and a low weight of 31.1 kg. Its premium 18” transducer with a 2.5” voice coil guarantees a powerful bass response between 35 Hz and 130 Hz (–10 dB), ideal for reinforcing PA systems without the need for external processors or crossovers.

Main features

• Bass-reflex design with scratch-resistant coated wood cabinet for maximum durability.
• Class D amplifier with 600 W RMS SMPS and 1200 W peak, with Peak, Thermal and RMS limiters.
• 18” transducer with 2.5” voice coil and 28/56-bit DSP.
• Usable frequency response of 35 Hz to 130 Hz (–10 dB) and maximum SPL of 133 dB.
• Professional connectivity: 2 balanced XLR inputs and 2 processed XLR outputs for stereo signal with True Bypass or X-Over mode.
• Panel controls: level adjustment, output mode (Mono/Stereo), polarity inversion and BOOST preset for bass enhancement.
• Passive cooling: fanless, for quiet operation and high reliability.
• M20 thread for mast mounting or stable stacking by non-slip top surface design.

Benefits for your sound system

• Easy integration: Thanks to its processed balanced outputs, you can directly connect two full-range speakers without additional crossover.
• Versatility: Suitable for live band reinforcement, DJs, live music, nightclubs, and rentals.
• Mobility: Compact and lightweight (31.1 kg) for easy transport and installation.
• Professional audio quality: defined, distortion-free bass even at high sound pressure levels.
• Reliability: Advanced limiters and rugged construction ensure years of heavy-duty use.

Use cases

• Support for live events and small or medium-sized concerts.
• Fixed installations in bars, clubs and multipurpose rooms.
• Reinforcement for portable DJ and rental PA systems.
• Sound reinforcement for conferences and presentations requiring powerful bass.

Frequently Asked Questions

• Do I need an external processor or crossover? No. The SUB 618 integrates DSP and processed XLR outputs (X-Over or True Bypass mode), allowing it to be connected directly to two full-range speakers.
• Can I use it in stereo mode? Yes, the panel allows you to select mono or stereo and offers polarity reversal.
• What preset does it include? It has a BOOST preset to enhance bass, in addition to linear mode.
• How is it mounted? It features an M20 thread for a pole or tripod and a stackable design with a non-slip top.

Description for projects

Active bass-reflex subwoofer with 18” transducer and 2.5” voice coil, 600 W RMS Class D amplifier (1200 W peak), 28/56-bit DSP, frequency response 35–130 Hz (–10 dB), maximum SPL 133 dB, 2 balanced processed XLR inputs and 2 outputs, Peak/Thermal/RMS limiters, BOOST preset, M20 thread, weight 31.1 kg, dimensions 500 × 625 × 690 mm.