{"product_id":"quest-qm18sa-professional-18-inch-active-subwoofer","title":"Quest QM18SA – 18\" Active Subwoofer | 1000W RMS","description":"\u003cp data-start=\"78\" data-end=\"623\"\u003eThe QUEST QM18SA is a professional high-output 18-inch active subwoofer engineered for live sound reinforcement, portable PA systems, DJs, touring productions, entertainment venues, houses of worship, and high-performance commercial audio applications. Designed to deliver deep and powerful low-frequency reinforcement with exceptional clarity and reliability, the QM18SA combines advanced active amplification, high SPL capability, and rugged professional construction in a versatile subwoofer system optimized for demanding sound environments.\u003c\/p\u003e\n\u003cp data-start=\"625\" data-end=\"1155\"\u003eFeaturing a high-excursion 18-inch low-frequency driver housed within an acoustically optimized bass reflex enclosure, the QM18SA delivers deep bass extension, powerful transient response, and impressive low-frequency impact suitable for live music, DJ systems, event production, and portable PA applications. The integrated active amplifier is precisely optimized for the subwoofer system, ensuring efficient power delivery, enhanced system protection, and consistent bass performance even under high-output operating conditions.\u003c\/p\u003e\n\u003cp data-start=\"1157\" data-end=\"1536\"\u003eThe enclosure is engineered for both portable and installed sound applications, integrating seamlessly with QUEST full-range loudspeaker systems to create balanced and high-performance sound reinforcement systems. Built with durable professional-grade construction, the QM18SA is designed for dependable long-term operation in demanding touring and commercial audio environments.\u003c\/p\u003e\n\u003cp data-start=\"1538\" data-end=\"1902\"\u003ePerformance Highlights:\u003cbr data-start=\"1561\" data-end=\"1564\"\u003e• Professional 18-inch active subwoofer system\u003cbr data-start=\"1610\" data-end=\"1613\"\u003e• Deep and powerful low-frequency reinforcement with high SPL capability\u003cbr data-start=\"1685\" data-end=\"1688\"\u003e• Integrated active amplification optimized for bass performance\u003cbr data-start=\"1752\" data-end=\"1755\"\u003e• Bass reflex enclosure for tight and musical low-frequency response\u003cbr data-start=\"1823\" data-end=\"1826\"\u003e• Rugged professional construction for touring and live sound applications\u003c\/p\u003e\n\u003ch2 data-section-id=\"1071k5m\" data-start=\"1904\" data-end=\"1938\"\u003eWhy You Should Buy This Product\u003c\/h2\u003e\n\u003cp data-start=\"1940\" data-end=\"2342\"\u003e• ⭐ Powerful 18-inch driver delivers deep and impactful bass performance\u003cbr data-start=\"2012\" data-end=\"2015\"\u003e• ⭐ Active amplifier system eliminates the need for external subwoofer amplification\u003cbr data-start=\"2099\" data-end=\"2102\"\u003e• ⭐ Ideal for DJs, live sound, portable PA systems, and event production\u003cbr data-start=\"2174\" data-end=\"2177\"\u003e• ⭐ Tight and controlled low-frequency reproduction for professional audio applications\u003cbr data-start=\"2264\" data-end=\"2267\"\u003e• Durable professional enclosure built for demanding real-world operation\u003c\/p\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"2344\" data-end=\"2359\"\u003eKey Features\u003c\/h2\u003e\n\u003cp data-start=\"2361\" data-end=\"2784\"\u003e• 18-inch high-excursion low-frequency driver\u003cbr data-start=\"2406\" data-end=\"2409\"\u003e• Active bass reflex subwoofer system\u003cbr data-start=\"2446\" data-end=\"2449\"\u003e• Integrated professional power amplification\u003cbr data-start=\"2494\" data-end=\"2497\"\u003e• High SPL capability for live sound reinforcement\u003cbr data-start=\"2547\" data-end=\"2550\"\u003e• Optimized enclosure for deep and controlled bass response\u003cbr data-start=\"2609\" data-end=\"2612\"\u003e• Suitable for portable PA and installed sound applications\u003cbr data-start=\"2671\" data-end=\"2674\"\u003e• Durable professional-grade cabinet construction\u003cbr data-start=\"2723\" data-end=\"2726\"\u003e• Professional audio connectivity and system integration\u003c\/p\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2786\" data-end=\"2813\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1b952b4\" data-start=\"2815\" data-end=\"2826\"\u003eGeneral\u003c\/h3\u003e\n\u003cp data-start=\"2828\" data-end=\"2897\"\u003e• Product Type: Active Subwoofer\u003cbr data-start=\"2860\" data-end=\"2863\"\u003e• Brand: QUEST\u003cbr data-start=\"2877\" data-end=\"2880\"\u003e• Model: QM18SA\u003c\/p\u003e\n\u003ch3 data-section-id=\"jt44pa\" data-start=\"2899\" data-end=\"2922\"\u003eAudio \u0026amp; Performance\u003c\/h3\u003e\n\u003cp data-start=\"2924\" data-end=\"3052\"\u003e• Frequency Range (-10 dB): —\u003cbr data-start=\"2953\" data-end=\"2956\"\u003e• Frequency Response (±3 dB): —\u003cbr data-start=\"2987\" data-end=\"2990\"\u003e• Sensitivity (dB): —\u003cbr data-start=\"3011\" data-end=\"3014\"\u003e• Maximum SPL (continuous \/ peak): —\u003c\/p\u003e\n\u003ch3 data-section-id=\"l1oapi\" data-start=\"3054\" data-end=\"3072\"\u003ePower Handling\u003c\/h3\u003e\n\u003cp data-start=\"3074\" data-end=\"3168\"\u003e• Built-in Amplifier: Yes\u003cbr data-start=\"3099\" data-end=\"3102\"\u003e• Amplifier Type: Active Subwoofer Amplifier\u003cbr data-start=\"3146\" data-end=\"3149\"\u003e• Power Output: —\u003c\/p\u003e\n\u003ch3 data-section-id=\"d7gdns\" data-start=\"3170\" data-end=\"3182\"\u003eCoverage\u003c\/h3\u003e\n\u003cp data-start=\"3184\" data-end=\"3220\"\u003e• Coverage pattern: Not Applicable\u003c\/p\u003e\n\u003ch3 data-section-id=\"1lx9lq2\" data-start=\"3222\" data-end=\"3236\"\u003eComponents\u003c\/h3\u003e\n\u003cp data-start=\"3238\" data-end=\"3389\"\u003e• LF driver: 1 × 18” high-excursion low-frequency driver\u003cbr data-start=\"3294\" data-end=\"3297\"\u003e• HF driver: None\u003cbr data-start=\"3314\" data-end=\"3317\"\u003e• Crossover type: Active \/ DSP-controlled\u003cbr data-start=\"3358\" data-end=\"3361\"\u003e• Impedance: Active system\u003c\/p\u003e\n\u003ch3 data-section-id=\"v033e1\" data-start=\"3391\" data-end=\"3418\"\u003ePhysical \u0026amp; Installation\u003c\/h3\u003e\n\u003cp data-start=\"3420\" data-end=\"3553\"\u003e• Enclosure material: —\u003cbr data-start=\"3443\" data-end=\"3446\"\u003e• Finish: Black\u003cbr data-start=\"3461\" data-end=\"3464\"\u003e• Mounting points: Stackable cabinet design\u003cbr data-start=\"3507\" data-end=\"3510\"\u003e• Dimensions (H × W × D): —\u003cbr data-start=\"3537\" data-end=\"3540\"\u003e• Weight: —\u003c\/p\u003e\n\u003ch3 data-section-id=\"k34kmu\" data-start=\"3555\" data-end=\"3572\"\u003eConfiguration\u003c\/h3\u003e\n\u003cp data-start=\"3574\" data-end=\"3727\"\u003e• Speaker Type: Active Subwoofer\u003cbr data-start=\"3606\" data-end=\"3609\"\u003e• System Type: 18-Inch Active Bass Reflex Subwoofer\u003cbr data-start=\"3660\" data-end=\"3663\"\u003e• Built-in Amplifier: Yes\u003cbr data-start=\"3688\" data-end=\"3691\"\u003e• Transformer: No\u003cbr data-start=\"3708\" data-end=\"3711\"\u003e• Mode: Active\u003c\/p\u003e\n\u003ch3 data-section-id=\"v6ee9q\" data-start=\"3729\" data-end=\"3741\"\u003eIncluded\u003c\/h3\u003e\n\u003cp data-start=\"3743\" data-end=\"3804\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e• 1 × Active Subwoofer\u003cbr data-start=\"3765\" data-end=\"3768\"\u003e• 1 × Power Cable\u003cbr data-start=\"3785\" data-end=\"3788\"\u003e• 1 × User Guide\u003c\/p\u003e","brand":"Quest","offers":[{"title":"Default Title","offer_id":52962757542207,"sku":"QUEST QM18SA","price":155200.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0014\/5942\/1272\/files\/QM18SA_Front-150px.jpg?v=1778595290","url":"https:\/\/audiomaxx.in\/products\/quest-qm18sa-professional-18-inch-active-subwoofer","provider":"Audiomaxx India","version":"1.0","type":"link"}