SKU: 40456035655

Martin Audio X218B 2 x 18 Inch Passive Subwoofer

$936.00 $1040.00
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Ships within 48 hours · Estimated delivery Sep 16 - Sep 21

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Description

Martin Audio X218B 2 x 18 Inch Passive SubwooferThe Martin Audio X218B 2 x 18 Inch Passive Subwoofer is a dual driver, high performance subwoofer for use with Blackline 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

The Martin Audio X218B 2 x 18 Inch Passive Subwoofer is a dual-driver, high performance subwoofer for use with Blackline 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.

Product Specification:  

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

Crossover: 80-120Hz Active

Enclosure: Birch/Poplar Ply

Finish: Black Textured Paint

Protective Grille: Black Perforated Steel

Connectors: 2 X NL4 Type

Pin Connections (INPUT): 1+ 1- Link Through 2+ 2-

Pin Connections (LINK): 1+ 1- Link Through 2+ 2-

Fitting’s: 12 X M10 Inserts, Pole-Mount Socket

Dimensions: (W) 41.3 X (H) 23.1 X (D) 28.6

Weight: 194 lbs

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40456035655

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4.3 ★★★★★
Based on 9 reviews
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Product Reviews
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Verified Purchase
Patty
Houston, US
★★★★★ 4
Good quality and soft, but not for everybody.
Color: White, Size: Queen, Color: White, Size: Queen
These pillows are super comfortable if you like thick, firm ones. I absolutely loved them, they feel high-quality and supportive, but they are very thick, and after a while, I started getting some neck pain. That said, over time they do soften up a bit and start to mold better to your body, which helps. I’d definitely recommend them for anyone who likes big, firm pillows, but they’re probably not the best choice for people who prefer something softer or lower.
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Reviewed in the United States on October 15, 2025
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Verified Purchase
Luana G.
Waukegan, US
★★★★★ 5
Soft & support
Color: White, Size: Queen
These pillows are perfect! I was looking for a cushy, lower profile pillow for side sleeping. So soft, supportive and comfortable! I could not believe the high quality at such an affordable price! They are queen size, so I need to purchase new longer pillow cases.
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Reviewed in the United States on March 16, 2026
P
Verified Purchase
Para mi fue un fracazo nunca hizo cafe expresso
Waukegan, US
★★★★★ 5
viewstar - Juego de 2 almohadas
Color: White, Size: Queen, Color: White, Size: Queen
Muy buenas y cómodas solo la tengo hace 2 días ojalá no se desinflan como otras que yo he comprado , pero si son comodisimas si en un mes se mantienen igual pienso comprar 2 mas They are very good and comfortable. I’ve only had them for two days—I really hope they don't go flat like others I've bought—but they truly are extremely comfortable. If they stay just like this after a month, I plan to buy two more.
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Reviewed in the United States on May 17, 2026
R
Verified Purchase
RebekM.
West Palm Beach, US
★★★★★ 3
Odd, but nice pillows...
Color: White, Size: Queen
These pillows are nice, but strange for me. ..I purchased 2 in queen-size. They are slightly longer than I prefer but doable..and have an odd soft yet firm texture. When you lay the head down ..it sinks into the pillow, but each side comes up. So you have these big sort of firm soft, fluffy pillow ends on each side of your face. If you're a side sleeper, you will automatically try to punch one of the ends down a bit, for the most part, that will be useless. So you will probably end up trying to angle it a bit so that you end up sort of sleeping on the corner sections. (This was for the queen size, for me. The standard may be better.) Also, there really no cool side. If you flip it..it might feel cool for about 2 seconds, but that's it. They are very nice pillows, but I just know I will be ordering something else in the future.
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Reviewed in the United States on April 26, 2026
J
Verified Purchase
Justine Thyme Fischer
Los Angeles, US
★★★★★ 5
Comfy, soft, helps me sleep without pain.
Color: White, Size: Queen
These pillows are very comfy. Lately, I'd been waking up with pinched nerves in my neck and shoulders so I decided to try new pillows. I've been using these pillows for a couple of days now and I no longer have any pinched nerves. They're so comfortable to rest my head on. If I had to make one constructive criticism, its that I wish they were thicker. I know its just personal preference but I like my head to be elevated more.. however, using 2 of these pillows does the trick! Also, they come packaged really well... vacuum sealed and in a box (which is good because they sat out in the rain for 7 hours).. and they didnt have a strange odor to them. For the price, they are great.
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Reviewed in the United States on April 17, 2026

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