Martin Audio Blackline Q118 Passive 1 x 18" Subwoofer - Black

Q118 features an 18” (460 mm) driver with a 4” (100 mm) voice coil, housed in a durable plywood enclosure finished in tough black paint. A perforated, impact-resistant steel grille protects the driver, while slot ports enhance efficiency and minimize noise turbulence.

Designed for versatile deployment, Q118 can be used individually, stacked or flown using integral M10 inserts. It also includes an M20 1.4” (35 mm) pole-mount fitting for seamless integration with other loudspeakers in BlacklineQ series. There are two signal link outputs—one positioned at the top and one at the bottom of the enclosure when oriented vertically. This allows for flexible, discreet and tidy signal connections to other BlacklineQ loudspeakers, regardless of setup.

Ergonomic side handles ensure easy handling and rubber feet on the base align with top-surface recesses to provide secure and stable stacking. A castor kit is available as an optional accessory.

When paired with BlacklineQ Series full-range systems, crossover and EQ functions can be managed via the DX0.4, DX0.6 or DX4.0 system controllers, or the onboard DSP of an iKON amplifier.

Compact, direct-radiator subwoofer
1 x 18” (460mm) driver with 4” (102mm) voice coil
Peak SPL of 136dB (142dB for crest factor 4)
Durable plywood enclosure
Slot ports for reduced air noise
Perforated steel grille
M20 / 1.4” (35mm) pole-mount socket
8Ω nominal impedance
Integral ergonomic handles
Rebate recesses for stable vertical stacking
M10 flying inserts
Fittings for optional castors
Three NL4 connectors

Type Compact, high-performance 18" subwoofer
Frequency response (4pi) [1] 38 Hz – 100 Hz ± 3 dB, -10 db @ 31 Hz
Driver 18” (460 mm) with 4” (100 mm) long excursion voice coil, ferrite motor system
Rated power [2] 800 W AES, 3200 W peak
Required electronics Processor and amplifier, or a combined amplifier-processor unit
Recommended electronics DX0.4, DX0.6 or DX4.0 system processor and VIA amplifier, or iKON amplifier-processor
Sensitivity [4] 101 dB
Maximum SPL [2][4] 130 dB continuous, 136 dB peak, 142 dB peak with crest factor 4
Nominal impedance 8 ohm
Dispersion Omnidirectional
Crossover Not applicable
Enclosure Durable plywood
Finish Black textured paint
Protective grille Black perforated steel grille with scrim cloth backing
Connectors 3 x NL4 connectors: 2 at bottom rear (input and link A), 1 at top rear (link B)
Pin connections (input) 1+/1–
Pin connections (link A) 1+/1– to 1+/1– and 2+/2– to 2+/2–
Pin connections (link B) 1+/1– on input to 2+/2– on link B
Fittings 16 x M10 inserts: 3 on top, 3 on bottom, 3 on left, 3 on right, 4 on rear
16 x M8 inserts on rear for optional castors
2 x bar handles with recycled ABS pockets: 1 on each side
M20 top-mounted thread plate for pole mounting
4 x skids on base, 4 x recesses on top: for stacking vertically
Dimensions (W) 530 mm x (H) 606 mm x (D) 690 mm
(W) 20.9 in x (H) 23.9 in x (D) 27.2 in
Weight 45.5 kg (100.3 lbs)