{"product_id":"m-k-x15-flagship-dual-15-subwoofer-trade-in","title":"M\u0026K X15+ Flagship Dual 15\" Subwoofer (Trade-in)","description":"\u003c!-- ======================================================\nM\u0026K Sound X15+ Flagship Dual 15\" Subwoofer\nSEO-Optimized Product Page\n====================================================== --\u003e\n\u003cstyle\u003e\n.bh-wrap{max-width:1100px;margin:0 auto;padding:1rem 1.25rem;line-height:1.6}\n.bh-eyebrow{letter-spacing:.08em;text-transform:uppercase;font-size:.8rem;opacity:.7}\n.bh-title{font-size:2.75rem;margin:.25rem 0 1rem;font-weight:700;line-height:1.2}\n.bh-sub{font-style:italic;margin:0 0 1.25rem}\n.bh-grid{display:grid;gap:1.25rem}\n@media(min-width:900px){.bh-grid{grid-template-columns:1.3fr .7fr;align-items:start}}\n.bh-section{margin:2rem 0}\n.bh-bullets{list-style:disc;padding-left:1.25rem;margin:.5rem 0 0}\n.bh-specs{width:100%;border-collapse:collapse}\n.bh-specs th,.bh-specs td{border:1px solid #e5e7eb;padding:.65rem;vertical-align:top}\n.bh-specs th{width:42%;background:#f8fafc;text-align:left}\n.bh-faq details{border:1px solid #e5e7eb;border-radius:.5rem;padding:.75rem 1rem;margin:.5rem 0;background:#fafafa}\n.bh-faq summary{font-weight:600;cursor:pointer}\n\u003c\/style\u003e\n\u003cdiv class=\"bh-wrap\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Product\"\u003e\n\u003cspan class=\"bh-eyebrow\"\u003eM\u0026amp;K Sound\u003c\/span\u003e\n\u003ch1 class=\"bh-title\" itemprop=\"name\"\u003eM\u0026amp;K Sound X15+ Flagship Dual 15\" Subwoofer (Trade-In)\u003c\/h1\u003e\n\u003cp class=\"bh-sub\"\u003eTHX Certified Dominus • Dual 15\" Extra-Long-Throw Drivers • Push-Pull Sealed Design • 700 Watts RMS • 1,400 Watts Peak • 16Hz–200Hz In-Room Response • Balanced XLR and RCA Connectivity\u003c\/p\u003e\n\u003cdiv class=\"bh-grid\"\u003e\n\u003c!-- LEFT COLUMN --\u003e\n\u003cdiv\u003e\n\u003csection id=\"overview\" class=\"bh-section\"\u003e\n\u003ch2\u003eFlagship THX Dominus Subwoofer for the Largest Home Cinemas\u003c\/h2\u003e\n\u003cp itemprop=\"description\"\u003eThe \u003cstrong\u003eM\u0026amp;K Sound X15+ Flagship Dual 15\" Subwoofer\u003c\/strong\u003e delivers immense low-frequency output with the accuracy and control required for reference-level cinema and music systems. Its dual 15-inch extra-long-throw drivers operate in M\u0026amp;K Sound’s signature push-pull configuration, helping reduce harmonic distortion while producing powerful bass that extends down to a published 16Hz in-room response.\u003c\/p\u003e\n\u003cp\u003eA Danish-built ICEpower Class D amplifier supplies 700 watts RMS and 1,400 watts peak output. With THX Certified Dominus performance for rooms up to approximately 6,500 cubic feet, the X15+ is designed for expansive private cinemas, large media rooms, premium listening spaces, and installations that demand deep, clean bass at high playback levels.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection id=\"highlights\" class=\"bh-section\"\u003e\n\u003ch2\u003eHighlights \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHX Certified Dominus\u003c\/strong\u003e — Engineered to deliver reference-level performance in home theaters up to approximately 6,500 cubic feet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual 15\" Long-Throw Drivers\u003c\/strong\u003e — Provides the displacement required for deep bass, substantial output, and powerful cinematic impact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-Pull Configuration\u003c\/strong\u003e — Mechanically opposing drivers help cancel distortion and improve low-frequency accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,400-Watt Peak Amplifier\u003c\/strong\u003e — High-efficiency Class D amplification supplies exceptional power and dynamic headroom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16Hz In-Room Extension\u003c\/strong\u003e — Reproduces deep soundtrack effects and musical information that can be felt as well as heard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible System Integration\u003c\/strong\u003e — RCA and balanced XLR inputs and outputs support receivers, processors, preamplifiers, and multiple-subwoofer systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection id=\"technology\" class=\"bh-section\"\u003e\n\u003ch2\u003eTechnology \u0026amp; Design\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePush-Pull Driver Architecture\u003c\/strong\u003e — One 15-inch driver faces forward while the second is mounted in an opposing orientation. Their mechanically opposite movement helps cancel nonlinear distortion and increases usable output.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCarbon-Fiber Driver Construction\u003c\/strong\u003e — The extra-long-throw woofers use rigid, lightweight carbon-fiber cones with a foam inner layer to support high excursion while maintaining speed and control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSealed Cabinet Design\u003c\/strong\u003e — The heavily reinforced sealed enclosure supports fast transient response and controlled low-frequency roll-off without port noise.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eICEpower Class D Amplification\u003c\/strong\u003e — The onboard amplifier delivers 700 watts RMS and up to 1,400 watts peak while maintaining high efficiency and substantial dynamic reserves.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdjustable Bass Management\u003c\/strong\u003e — Selectable THX and M\u0026amp;K EQ modes, fixed or variable crossover settings, crossover bypass, adjustable level, and continuously variable phase simplify integration with a wide range of systems.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection id=\"faq\" class=\"bh-section bh-faq\"\u003e\n\u003ch2\u003eFAQ — M\u0026amp;K Sound X15+\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does THX Certified Dominus mean?\u003c\/summary\u003e\n\u003cp\u003eTHX Certified Dominus is designed for reference-level playback in very large home cinemas. M\u0026amp;K Sound specifies the X15+ for rooms up to approximately 6,500 cubic feet with viewing distances reaching about 20 feet.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the X15+ use two active 15-inch drivers?\u003c\/summary\u003e\n\u003cp\u003eYes. The X15+ uses two powered 15-inch extra-long-throw drivers operating in a push-pull configuration. It does not use a passive radiator.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the X15+ connect to a balanced AV processor?\u003c\/summary\u003e\n\u003cp\u003eYes. Balanced XLR inputs and outputs are provided along with unbalanced RCA connections, allowing integration with both consumer and professional-grade components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the X15+ include built-in room correction or app control?\u003c\/summary\u003e\n\u003cp\u003eNo. Setup is performed using the rear-panel level, phase, crossover, EQ, and power controls. Room correction may be applied through a compatible AV receiver, processor, or external calibration system.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection id=\"why-buy\" class=\"bh-section\"\u003e\n\u003ch2\u003eWhy Buy From Us\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003eAuthorized M\u0026amp;K Sound Dealer\u003c\/li\u003e\n\u003cli\u003e5% Reward Points on Every Purchase\u003c\/li\u003e\n\u003cli\u003ePrice Match Guarantee\u003c\/li\u003e\n\u003cli\u003eExpert Subwoofer Placement, Home Theater Design \u0026amp; Calibration Support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection id=\"related\" class=\"bh-section\"\u003e\n\u003ch2\u003eRelated Products \u0026amp; Accessories\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003eM\u0026amp;K Sound X12+ THX Ultra Certified Subwoofer\u003c\/li\u003e\n\u003cli\u003eM\u0026amp;K Sound S300 THX Dominus Certified Loudspeaker\u003c\/li\u003e\n\u003cli\u003eM\u0026amp;K Sound MP300 On-Wall Loudspeaker\u003c\/li\u003e\n\u003cli\u003eM\u0026amp;K Sound IW500 THX Dominus In-Wall Speaker\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c!-- RIGHT COLUMN --\u003e\n\u003caside\u003e\n\u003csection id=\"specs\" class=\"bh-section\"\u003e\n\u003ch2\u003eM\u0026amp;K Sound X15+ Specifications\u003c\/h2\u003e\n\u003ctable class=\"bh-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eFlagship Powered Subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTHX Certification\u003c\/th\u003e\n\u003ctd\u003eTHX Certified Dominus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Room Size\u003c\/th\u003e\n\u003ctd\u003eUp to approximately 6,500 cubic feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Principle\u003c\/th\u003e\n\u003ctd\u003ePush-pull sealed enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrivers\u003c\/th\u003e\n\u003ctd\u003eTwo 15\" extra-long-throw woofers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDriver Material\u003c\/th\u003e\n\u003ctd\u003eCarbon-fiber sandwich construction with foam inner layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response\u003c\/th\u003e\n\u003ctd\u003e16Hz–200Hz, average in-room response ±3dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAmplifier Type\u003c\/th\u003e\n\u003ctd\u003eAnalog input stage with ICEpower Class D switch-mode power output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRMS Amplifier Power\u003c\/th\u003e\n\u003ctd\u003e700 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePeak Amplifier Power\u003c\/th\u003e\n\u003ctd\u003e1,400 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBass EQ Modes\u003c\/th\u003e\n\u003ctd\u003eTHX Bass EQ and M\u0026amp;K Anechoic EQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVariable Low-Pass Filter\u003c\/th\u003e\n\u003ctd\u003e40Hz–125Hz, continuously variable, fourth-order\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLow-Pass Bypass\u003c\/th\u003e\n\u003ctd\u003e40Hz–200Hz, no low-pass filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFixed Low-Pass Filter\u003c\/th\u003e\n\u003ctd\u003e80Hz THX-reference low-pass setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePhase Control\u003c\/th\u003e\n\u003ctd\u003eContinuously variable from 0° to 180°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLevel Control\u003c\/th\u003e\n\u003ctd\u003eFixed THX reference or continuously variable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnbalanced Connections\u003c\/th\u003e\n\u003ctd\u003eLeft and right RCA inputs and outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBalanced Connections\u003c\/th\u003e\n\u003ctd\u003eLeft and right XLR inputs and outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProtection\u003c\/th\u003e\n\u003ctd\u003eHeadroom Limiter Maximizer with dynamic driver-excursion control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Modes\u003c\/th\u003e\n\u003ctd\u003eOff, automatic signal sensing, and on\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandby Power Consumption\u003c\/th\u003e\n\u003ctd\u003e0.5 watt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAverage Power Consumption\u003c\/th\u003e\n\u003ctd\u003e120 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Power Consumption\u003c\/th\u003e\n\u003ctd\u003e800 watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions (H × W × D)\u003c\/th\u003e\n\u003ctd\u003e32.8\" × 20.3\" × 18.1\" \/ 83.3 × 51.5 × 46cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e134.7 lbs. \/ 61.1kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eSatin Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eM\u0026amp;K Sound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection id=\"whats-in-the-box\" class=\"bh-section\"\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul class=\"bh-bullets\"\u003e\n\u003cli\u003e1 × M\u0026amp;K Sound X15+ Flagship Dual 15\" Subwoofer\u003c\/li\u003e\n\u003cli\u003eUS and EU AC Power Cords\u003c\/li\u003e\n\u003cli\u003eRubber Feet\u003c\/li\u003e\n\u003cli\u003eProtective Handling Gloves\u003c\/li\u003e\n\u003cli\u003eSafety Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eRCA cables, balanced XLR cables, room-calibration equipment, and additional subwoofers are sold separately.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/aside\u003e\n\u003c\/div\u003e\n\u003cmeta itemprop=\"brand\" content=\"M\u0026amp;K Sound\"\u003e \u003cmeta itemprop=\"color\" content=\"Satin Black\"\u003e \u003cmeta itemprop=\"category\" content=\"Powered Subwoofers, THX Dominus Subwoofers, Dual 15-Inch Subwoofers, Sealed Subwoofers, Push-Pull Subwoofers, Flagship Home Theater Subwoofers\"\u003e\n\u003c\/div\u003e","brand":"M\u0026K","offers":[{"title":"Default Title","offer_id":51813354930542,"sku":"MAKX15PLUSOLT","price":3999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/1537\/4703\/files\/X15-cover.jpg?v=1738879322","url":"https:\/\/audiolab.com\/products\/m-k-x15-flagship-dual-15-subwoofer-trade-in","provider":"Audiolab","version":"1.0","type":"link"}