{"product_id":"blackline-q218-2x18-passive-subwoofer-with-4-voice-coil-black","title":"Martin Audio Blackline Q218 2x18\" Passive Subwoofer with 4\" Voice Coil Black","description":"\u003cp\u003eBlackline Q218 is a high-performance, dual-driver subwoofer designed to complement BlacklineQ Series full-range loudspeakers. It extends the system’s low-frequency response down to 38 Hz, delivering powerful bass performance with a peak SPL of 136dB (142dB for crest factor 4) for exceptional low-end impact.\u003cbr\u003e\nBlackline Q218 features dual 18” (460 mm) drivers with 4” (100 mm) voice coils, housed in a robust plywood enclosure finished in hard-wearing black paint. A perforated, impact resistant steel grille protects the drivers, while slot ports ensure efficient airflow and reduced turbulence for cleaner low frequency performance.\u003cbr\u003e\nDesigned for flexible deployment, Q218 can be used singly, stacked or flown via integral M10 inserts. It 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.\u003cbr\u003e\nFour ergonomic side handles facilitate easy handling and rubber feet on the base align with top-surface recesses to ensure stable stacking. A castor kit is available as an optional accessory.\u003cbr\u003e\nWhen used 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.\u003cbr\u003e\nProduct Features\u003c\/p\u003e\n\n\u003cp\u003eDual-driver, direct radiator subwoofer\u003cbr\u003e\n2 x 18” (460mm) drivers with 4” (102mm) voice coils\u003cbr\u003e\nPeak SPL of 136dB (142dB for crest factor 4)\u003cbr\u003e\nDurable plywood enclosure\u003cbr\u003e\nSlot ports for reduced air noise\u003cbr\u003e\nPerforated steel grille\u003cbr\u003e\nM20 \/ 1.4” (35mm) pole-mount socket\u003cbr\u003e\n4Ω nominal impedance\u003cbr\u003e\nIntegral ergonomic handles\u003cbr\u003e\nFeet for vertical or horizontal operation\u003cbr\u003e\nRebate recesses for stable horizontal stacking\u003cbr\u003e\nM10 flying inserts\u003cbr\u003e\nFittings for optional castors\u003cbr\u003e\nThree NL4 connectors\u003cbr\u003e\n85% Post Consumer Recycled ABS Plastic\u003cbr\u003e\nFSC Certified Cardboard Packaging\u003cbr\u003e\nBiodegradable Box Sealing tape\u003c\/p\u003e\n\n\n\u003cp\u003eProduct Specifications\u003c\/p\u003e\n\n\u003cp\u003eType:  High-performance, dual 18\" driver subwoofer\u003cbr\u003e\nFrequency Response:  38 Hz – 100 Hz ± 3 dB, -10 db @ 31 Hz\u003cbr\u003e\nDriver:  2 x 18” (460 mm) with 4” (100 mm) long excursion voice coil, ferrite motor system\u003c\/p\u003e\n\n\u003cp\u003eRated Power:  1600 W AES, 6400 W peak\u003cbr\u003e\nRequired Electronics:  Processor and amplifier, or a combined amplifier-processor unit\u003cbr\u003e\nRecommended Electronics:  DX0.4, DX0.6 or DX4.0 system processor and VIA amplifier, or iKON amplifier-processor\u003cbr\u003e\nSensitivity:  104 dB\u003cbr\u003e\nMaximum SPL:  136 dB continuous, 142 dB peak, 148 dB peak with crest factor 4\u003cbr\u003e\nNominal Impedance:  4 ohm\u003cbr\u003e\nDispersion:  Omnidirectional\u003cbr\u003e\nCrossover:  N\/A\u003cbr\u003e\nEnclosure:  Durable plywood\u003cbr\u003e\nFinish:  Black textured paint\u003cbr\u003e\nProtective Grille:  Black perforated steel grille with scrim cloth backing\u003cbr\u003e\nConnectors:  3 x NL4 connectors: 2 at bottom rear (input and link A), 1 at top rear (link B)\u003cbr\u003e\nPin Connections (Input):  1+\/1–\u003cbr\u003e\nPin Connections (Link A):  1+\/1– to 1+\/1– and 2+\/2– to 2+\/2–\u003cbr\u003e\nPin Connections (Link B):  2+\/2– on input to 1+\/1– on link B\u003cbr\u003e\nFittings:\u003c\/p\u003e\n\n\u003cp\u003e24 x M10 inserts: 4 on top, 4 on bottom, 6 on left, 6 on right, 4 on rear\u003cbr\u003e\n16 x M8 inserts on rear for optional castors\u003cbr\u003e\n4 x bar handles with recycled ABS pockets: 2 on top, 2 on bottom\u003cbr\u003e\nM20 top-mounted thread plate for pole mounting\u003cbr\u003e\n4 x skids on base: for standing vertically\u003cbr\u003e\n4 x skids on right side, 4 x recesses on left side: for stacking horizontally\u003c\/p\u003e\n\n\n\u003cp\u003eDimensions (WxHxD):  536 mm x 1206 mm x 690 mm (21.1 in x 47.5 in x 27.2 in)\u003cbr\u003e\nWeight:  82.5 kg (181.9 lbs)\u003cbr\u003e\nAccessories (Optional):\u003c\/p\u003e\n\n\u003cp\u003eM10 eye bolt HTKCT06\u003cbr\u003e\nWind-up telescopic pole ASF20071\u003cbr\u003e\nTransit cover\u003c\/p\u003e","brand":"Martin Audio","offers":[{"title":"Default Title","offer_id":58332911108470,"sku":"MAUQ218","price":2114.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0361\/2681\/files\/WEBMAU00560_Q218B_1.jpg?v=1784913187","url":"https:\/\/spartanmusic.co.uk\/products\/blackline-q218-2x18-passive-subwoofer-with-4-voice-coil-black","provider":"Spartan Music","version":"1.0","type":"link"}