dB Technologies SUB 18H Semi Horn-Loaded Active Class-D Subwoofer (18", Black)

dB Technologies SUB 18H Semi Horn-Loaded Active Class-D Subwoofer (18", Black)

dB Technologies SUB 18H Semi Horn-Loaded Active Class-D Subwoofer (18", Black)

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Expected availability: 7-10 business days

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dB Technologies SUB-18H overview

  • 1Description

The black SUB 18H Semi Horn-Loaded Active Class-D Subwoofer from dBTechnologies features a 18" woofer with a 4" voice coil, driven by a high-efficiency Digipro G3 Class-D digital amplifier with 1500W program and 2000W peak power. Thanks to the hybrid horn-loading configuration, the woofer can be tuned to the lowest frequencies, improving system efficiency and providing a deep, enveloping sound—even at close listening distance—which makes it suitable for small venues.

The SUB 18H Subwoofer offers stereo inputs with selectable link or crossover outputs, a crossover frequency switch at 90 or 120 Hz, a phase-inversion switch, and built-in delay up to 4.5 ms, which is adjustable in 0.5 ms steps. It features delay control that allows sound-alignment between the subwoofer and speaker. It also feature a mini USB Type-B port to update system firmware and retrieve a telemetry log file that provides information on abnormal events, usage time, and amplifier status.

The unit uses SMPS technology auto-ranging digital power supply that allows operation on 110 or 220 VAC. The 28-/56-bit DSP with 24-bit/48 kHz A/D conversion allows you to control the audio crossover of the acoustic components, frequency response, limiter, and phase alignment. The unit's Hybrid Enclosure Technology housing features a birch plywood cabinet coated with PVC, aluminum heavy-duty handles for easy transportation, and polypropylene edges that protect it from scratching or impacts during transport. The subwoofer can be pole mounted using the M20 threaded mount plate on the top of the cabinet.

Main Highlights

Active semi horn-loaded subwoofer
1000W Digipro G3 Class-D digital amplifier
28-/56-bit DSP with 24-bit/48 kHz A/D conversion
Crossover frequency of 90 or 120 Hz, 24 dB/Octave
SMPS with auto-ranging power supply unit for 110 or 220 VAC operation
Delay switch up to 4.5 ms (step of 0.5 ms)
PVC-coated birch plywood cabinet
Standard M20 pole-mount plate on the top of the cabinet


Suitable for music playback and sound reinforcement for small and mid-sized venues like clubs, ballrooms, live theater, houses of worship, retail, restaurants/bars, corporate events
Used with portable PA systems
Used with the audio-visual systems in small-sized venues
In the Box
dB Technologies SUB 18H Semi Horn-Loaded Active Class-D Subwoofer (18", Black)
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    dB Technologies SUB-18H specs

    Type Semi horn-loaded active subwoofer
    Frequency Response 35 to 120 Hz (-6 dB)
    28 to 150 Hz (-10 dB)
    Maximum Sound Pressure Level (SPL) 134
    Directivity Omnidirectional
    Driver 18" (46 cm) woofer with 4" (10.1 cm) voice coil
    Amplifier Amp Technology: Digipro G3
    Amp Class: Class-D
    Power PRG: 1500 W
    Peak Power: 2000 W
    Power Supply: 1000 W SMPS with PSU auto-range (110 and 220 V)
    Controller 28-/56-bit DSP
    AD/DA Conversion 24-bit / 48 kHz
    Limiter Dual Active, RMS / Peak, Thermal
    Crossover Frequency 90, 120 Hz
    Crossover Slope 24 dB/Octave
    Controls Crossover frequency selection
    Delay switch up to 4.5 ms
    Phase inversion switch
    Outputs mode switch (Link/Crossover)
    Mini-USB type-B port (service data)
    Connectors Signal Input: 2 x XLR
    Signal Output: 2 x XLR Crossover out / Link out
    Housing Birch plywood, black PVC cover
    Dimensions (W x H x D) 20.6 x 28.0 x 27.4" (52.4 x 71.1 x 69.5 cm)
    Weight 91.3 lb (41.4 kg)

    dB Technologies SUB-18H reviews

    SUB 18H Semi Horn-Loaded Active Class-D Subwoofer (18", Black) is rated 1.0 out of 5 by 1.
    Rated 1 out of 5 by from Loud but hard and harsh Has a strong hard kick but cuts off anything below about 50Hz - no go for r'n'b nor house music. When turned up loud, it shouts terribly and hard at about 180Hz. Then I heard Behringer B1800HP which is not that loud but has definetelly that soft meat you need as a DJ.
    Date published: 2016-05-22
    • y_2018, m_10, d_21, h_15
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