The Blackline X218 is a dual-driver, high performance subwoofer for use with BlacklineX Series full-range loudspeakers. With an operating range of 42Hz-200Hz + 3dB, it produces high output levels with low distortion and can be used singly or stacked horizontally. It features dual 18” (460mm)/4” (100mm) voice coil, long-excursion drivers in a reflex enclosure with eight large ports that reduce air turbulence at high output levels.

Key Features

Dual-driver, direct radiator subwoofer
2 x 18” (460mm) drivers with 4” (100mm) voice coils
Durable plywood enclosure
Large ports for reduced air noise
Powder coated, perforated steel grille
Integral ergonomic handles
35mm pole-mount socket
Feet for vertical or horizonal operation
Rebate recesses for stable horizontal stacking
M10 flying inserts

Applications

The X218 enclosure is constructed from plywood and finished in black textured paint.

For added versatility in deployment, the X218 is fitted with a 35mm pole-mount socket for mounting BlacklineX full-range enclosures, and integral M10 inserts provide for eyebolt suspension of a single enclosure. Ergonomic handles assist ease of handling and the drivers are protected by a perforated steel grille. Rubber feet on the base of the X218 resist movement and align with recesses in the top surface for stable horizontal stacking. Feet are also provided on one side of the enclosure for vertical operation of a single cabinet.

The X218 is supplied as standard without castors, which are available as an accessory pack.

When used with BlacklineX Series full-range systems, crossover and EQ functions can be performed by the DX0.4, DX0.6 or DX4.0 system controllers or by a Martin Audio amplifier with onboard DSP.

General Specifications

Type: Dual-driver, direct radiating subwoofer
Frequency Response: 42Hz-200Hz ± 3dB, -10dB @ 33Hz
Driver: 18” (460mm)/4” (100mm) voice coil, long excursion, ferrite magnet
Rated Power: 1600W AES, 6400W peak
Sensitivity: 106dB
Maximum SPL: 141dB peak (half space)
Nominal Impedance: 4Ω
Dispersion (-6dB): Omnidirectional
Crossover: 80-120Hz active
Enclosure: Birch/poplar ply
Protective Grille: Black perforated steel
Connectors: 2X NL4 type
Pin Connections (Input): 1+/1- Link Through 2+ 2-
Pin Connections (Link): 1+ 1- Link Through 2+ 2-
Fittings
- 12X M10 inserts
- Pole-mount socket
Dimensions (WxDxH): 1049mm X 727mm X 587mm / 41.3″ X 28.6″ X 23.1″
Weight: 88kgs / 194lbs

Price-Flex

Price Flex

Name: Martin Audio Blackline X218
Brand: Martin Audio
SKU: MART-BLACKLINE X218
Availability: InStock

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Delivery Exclusions

PLEASE NOTE:

Some products are exceptionally large, heavy or bulky and require specialist freight services. This typically includes items such as large PA speakers, dual 15″ speaker cabinets, dual 18″ subwoofers, flight cases and other oversized or very heavy equipment.

We work hard to keep our prices as competitive as possible and, in most cases, delivery is completely covered by our standard shipping rates. However, for certain oversized items being delivered to regional or outlying areas, the actual courier cost can be significantly higher than standard deliveries. This is also owing to factors completely outside of our control (petrol costs and rising costs of delivery by courier partners)

If this applies to your order, we will always contact you before dispatch to discuss the available options. These may include:

Proceeding with a small additional freight contribution.
Collecting the order from one of our suppliers or a nearby courier depot where available.
Cancelling the order for a full refund if a suitable solution cannot be reached.

Please be assured that we only request an additional freight contribution in exceptional circumstances where the courier cost is substantially higher than normal. Our goal is always to deliver your order at the advertised price whenever possible.

If you’re unsure whether an item may be affected, you’re welcome to contact us before placing your order and we’ll gladly provide a delivery estimate.

Thank you for your understanding and ongoing support!