{"product_id":"sky-high-car-audio-fmx-6-5-subwoofer-600w-rms-d1-d2","title":"Sky High Car Audio FMX Series 6.5\" Subwoofer – 600W RMS D1\/D2","description":"\u003ch1\u003eSky High Car Audio FMX Series 6.5\" Subwoofer – 600W RMS D1\/D2\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003eSold by AudioSellerz.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Sky High Car Audio FMX Series 6.5-inch Subwoofer delivers serious low-frequency performance from a compact platform. Rated for 600 watts RMS, this small-footprint subwoofer is built for tight installations, creative enclosures and multi-subwoofer systems where space and output both matter.\u003c\/p\u003e\n\u003cp\u003eThe FMX 6.5 combines a triple-stacked Y35 ferrite motor, 2-inch high-temperature voice coil, 5.5-inch progressive spider and Sky High 10-gauge direct leads. A forged carbon-fiber cone and recessed forged carbon-fiber dust cap provide a strong, stealthy appearance, while fiberglass support beneath the cone adds rigidity.\u003c\/p\u003e\n\u003cp\u003eChoose between dual 1-ohm and dual 2-ohm voice-coil configurations based on the number of subwoofers, amplifier capabilities and final impedance planned for the completed system.\u003c\/p\u003e\n\u003ch2\u003eSky High FMX 6.5-Inch Subwoofer Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e6.5-inch FMX Series subwoofer\u003c\/li\u003e\n\u003cli\u003e600 watts RMS power handling\u003c\/li\u003e\n\u003cli\u003eDual 1-ohm or dual 2-ohm voice-coil options\u003c\/li\u003e\n\u003cli\u003e2-inch high-temperature voice coil\u003c\/li\u003e\n\u003cli\u003e5.5-inch progressive spider\u003c\/li\u003e\n\u003cli\u003eTriple-stacked Y35 ferrite motor\u003c\/li\u003e\n\u003cli\u003eSky High 10-gauge direct leads\u003c\/li\u003e\n\u003cli\u003eForged carbon-fiber cone\u003c\/li\u003e\n\u003cli\u003eRecessed forged carbon-fiber dust cap\u003c\/li\u003e\n\u003cli\u003eFiberglass support beneath the cone for added rigidity\u003c\/li\u003e\n\u003cli\u003eStealth black appearance\u003c\/li\u003e\n\u003cli\u003eNo customization options\u003c\/li\u003e\n\u003cli\u003eSKU: SHCA-FMX-6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompact FMX Performance\u003c\/h2\u003e\n\u003cp\u003eThe FMX 6.5-inch subwoofer brings the construction and design of the FMX lineup into a compact format. It is made for systems that need more output than a basic small subwoofer but cannot accommodate the enclosure required by a larger 10-inch, 12-inch, 15-inch or 18-inch driver.\u003c\/p\u003e\n\u003cp\u003eThe Sky High FMX 6.5 can be a strong option for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBehind-seat truck enclosures\u003c\/li\u003e\n\u003cli\u003eUnder-seat installations with sufficient clearance\u003c\/li\u003e\n\u003cli\u003eCenter-console bass systems\u003c\/li\u003e\n\u003cli\u003eCompact trunk and hatchback builds\u003c\/li\u003e\n\u003cli\u003eCustom space-saving enclosures\u003c\/li\u003e\n\u003cli\u003eSingle high-output 6.5-inch systems\u003c\/li\u003e\n\u003cli\u003eMultiple-subwoofer arrays\u003c\/li\u003e\n\u003cli\u003eSystems where output and enclosure space must be carefully balanced\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIts compact diameter does not eliminate the need for a properly designed enclosure. The box must still be built around the requirements of the FMX 6.5 rather than chosen only because it has a 6.5-inch cutout.\u003c\/p\u003e\n\u003ch2\u003eForged Carbon-Fiber Cone Construction\u003c\/h2\u003e\n\u003cp\u003eThe FMX 6.5 uses a forged carbon-fiber cone and recessed forged carbon-fiber dust cap. Fiberglass support beneath the cone adds rigidity for controlled movement during demanding use.\u003c\/p\u003e\n\u003cp\u003eThe triple-stacked Y35 ferrite motor provides the motor structure behind the subwoofer, while the 5.5-inch progressive spider helps stabilize the moving assembly. Sky High 10-gauge direct leads provide a secure connection without relying on small conventional push terminals.\u003c\/p\u003e\n\u003ch2\u003eDual 1-Ohm vs Dual 2-Ohm\u003c\/h2\u003e\n\u003cp\u003eThe D1 and D2 versions have the same 600-watt RMS rating. The difference is the final impedance each voice-coil configuration can provide.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne dual 1-ohm subwoofer\u003c\/strong\u003e can normally be wired to a 0.5-ohm or 2-ohm final load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne dual 2-ohm subwoofer\u003c\/strong\u003e can normally be wired to a 1-ohm or 4-ohm final load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMultiple FMX 6.5-inch subwoofers create additional wiring options. Choose D1 or D2 based on the total number of subwoofers and the safe operating impedance of the amplifier.\u003c\/p\u003e\n\u003cp\u003eReview the \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/subwoofer-wiring-diagrams-ohm-load-guide\" style=\"color: #0066cc; text-decoration: underline;\"\u003esubwoofer wiring diagrams and final ohm-load guide\u003c\/a\u003e before selecting the voice-coil configuration.\u003c\/p\u003e\n\u003ch2\u003eMatch the Amplifier to 600 Watts RMS\u003c\/h2\u003e\n\u003cp\u003eMatch the amplifier using the correct 600-watt RMS rating for each FMX 6.5-inch subwoofer. Do not use the 3,500-watt rating associated with the larger FMX Series models when planning power for this compact version.\u003c\/p\u003e\n\u003cp\u003eBefore choosing an amplifier, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe number of FMX 6.5-inch subwoofers being installed\u003c\/li\u003e\n\u003cli\u003eWhether each subwoofer is D1 or D2\u003c\/li\u003e\n\u003cli\u003eHow the voice coils and subwoofers will be wired\u003c\/li\u003e\n\u003cli\u003eThe completed final impedance\u003c\/li\u003e\n\u003cli\u003eThe amplifier’s RMS output at that impedance\u003c\/li\u003e\n\u003cli\u003eThe amplifier’s minimum stable impedance\u003c\/li\u003e\n\u003cli\u003eThe required power wire and fuse protection\u003c\/li\u003e\n\u003cli\u003eThe available battery and alternator support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBrowse \u003ca href=\"https:\/\/audiosellerz.com\/collections\/monoblock-amplifiers\" style=\"color: #0066cc; text-decoration: underline;\"\u003emonoblock car audio amplifiers\u003c\/a\u003e when choosing power for a single or multiple FMX 6.5-inch subwoofer system.\u003c\/p\u003e\n\u003ch2\u003eUse an Enclosure Designed for the FMX 6.5\u003c\/h2\u003e\n\u003cp\u003eThe enclosure affects low-frequency extension, output, efficiency, cone control and reliability. A compact subwoofer can still perform poorly or become damaged when installed in an incorrectly designed box.\u003c\/p\u003e\n\u003cp\u003eBefore building the enclosure, verify:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRecommended net internal volume\u003c\/li\u003e\n\u003cli\u003eSuitable enclosure design\u003c\/li\u003e\n\u003cli\u003ePort area and tuning when applicable\u003c\/li\u003e\n\u003cli\u003eSubwoofer and port displacement\u003c\/li\u003e\n\u003cli\u003eMounting depth\u003c\/li\u003e\n\u003cli\u003eCutout diameter\u003c\/li\u003e\n\u003cli\u003eCone and surround clearance\u003c\/li\u003e\n\u003cli\u003eDirect-lead and speaker-wire clearance\u003c\/li\u003e\n\u003cli\u003eAvailable space and loading direction inside the vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRead the \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/subwoofer-box-guide\" style=\"color: #0066cc; text-decoration: underline;\"\u003ecomplete subwoofer box and enclosure guide\u003c\/a\u003e when planning the box portion of the system.\u003c\/p\u003e\n\u003ch2\u003ePower Wiring and Electrical Support\u003c\/h2\u003e\n\u003cp\u003eThe amplifier must receive stable power through properly sized wiring, secure grounds and correct fuse protection. Electrical requirements increase when multiple FMX 6.5-inch subwoofers and larger amplifiers are installed.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"https:\/\/audiosellerz.com\/collections\/sky-high-car-audio-amp-kits\" style=\"color: #0066cc; text-decoration: underline;\"\u003eSky High Car Audio amplifier wiring kits\u003c\/a\u003e and \u003ca href=\"https:\/\/audiosellerz.com\/collections\/sky-high-car-audio-big-3-kits\" style=\"color: #0066cc; text-decoration: underline;\"\u003eSky High Car Audio Big 3 kits\u003c\/a\u003e when planning the wiring and charging paths.\u003c\/p\u003e\n\u003cp\u003eA Big 3 upgrade strengthens important charging and grounding connections, but it does not increase the alternator’s rated output.\u003c\/p\u003e\n\u003ch2\u003eSet Gain and Filters Correctly\u003c\/h2\u003e\n\u003cp\u003eAmplifier gain should be used to match the amplifier’s input sensitivity to the source signal. Gain is not an additional volume or power control.\u003c\/p\u003e\n\u003cp\u003eExcessive gain can create clipping, heat and voice-coil damage. Low-pass crossover and subsonic-filter settings should also be selected around the amplifier, enclosure design, tuning frequency and intended operating range.\u003c\/p\u003e\n\u003cp\u003eRead \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/how-to-set-amp-gain-for-subs-mids-and-highs\" style=\"color: #0066cc; text-decoration: underline;\"\u003ehow to set amplifier gain for subwoofers\u003c\/a\u003e before completing the final tuning.\u003c\/p\u003e\n\u003ch2\u003eShop the Sky High FMX Subwoofer Series\u003c\/h2\u003e\n\u003cp\u003eCompare the FMX 6.5-inch with additional FMX sizes in the \u003ca href=\"https:\/\/audiosellerz.com\/collections\/sky-high-car-audio-fmx-subwoofer-series\" style=\"color: #0066cc; text-decoration: underline;\"\u003eSky High Car Audio FMX Subwoofer Series collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eYou can also browse the complete \u003ca href=\"https:\/\/audiosellerz.com\/collections\/sky-high-subwoofers\" style=\"color: #0066cc; text-decoration: underline;\"\u003eSky High Car Audio subwoofer lineup\u003c\/a\u003e to compare the FE Slim, FE, FXB, BMX, FMX and FXXL Series.\u003c\/p\u003e\n\u003ch2\u003eHelpful Audio Sellerz Links\u003c\/h2\u003e\n\n\u003cp\u003e\n  Finishing a wiring install? Shop\n  \u003ca href=\"https:\/\/audiosellerz.com\/collections\/power-speaker-wire\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio power wire and ground wire\u003c\/a\u003e,\n  \u003ca href=\"https:\/\/audiosellerz.com\/collections\/fuse-blocks\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio fuse holders and fuse blocks\u003c\/a\u003e,\n  \u003ca href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\" style=\"color:#0066cc;text-decoration:underline;\"\u003eBig 3 upgrade kits\u003c\/a\u003e,\n  and\n  \u003ca href=\"https:\/\/audiosellerz.com\/collections\/sky-high-car-audio-amp-kits\" style=\"color:#0066cc;text-decoration:underline;\"\u003eSky High Car Audio amp kits\u003c\/a\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  For more installation help, read the\n  \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/car-audio-wire-gauge-chart-fuse-guide\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio wire gauge and fuse guide\u003c\/a\u003e\n  and the\n  \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/car-audio-grounding-guide-better-amp-ground\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio grounding guide\u003c\/a\u003e.\n\u003c\/p\u003e\n\n\u003ch2\u003eDealer \u0026amp; Wholesale Accounts\u003c\/h2\u003e\n\n\u003cp\u003e\n  Dealers, shops, installers, builders, and resellers who want to sell Sky High Car Audio products or other products offered by Audio Sellerz can\n  \u003ca href=\"https:\/\/audioresellerz.com\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0066cc;text-decoration:underline;\"\u003eapply for a wholesale or dealer account through AudioResellerz.com\u003c\/a\u003e.\n\u003c\/p\u003e\n\n\u003ch2\u003eFollow Audio Sellerz\u003c\/h2\u003e\n\n\u003cp\u003e\n  Stay connected with Audio Sellerz for car audio builds, product updates, installation tips, videos, giveaways, and new releases.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  Follow Audio Sellerz on\n  \u003ca href=\"https:\/\/www.facebook.com\/share\/1BTSynboiR\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFacebook\u003c\/a\u003e,\n  \u003ca href=\"https:\/\/www.instagram.com\/audiosellerz\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0066cc;text-decoration:underline;\"\u003eInstagram\u003c\/a\u003e,\n  \u003ca href=\"https:\/\/www.tiktok.com\/@audiosellerz\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0066cc;text-decoration:underline;\"\u003eTikTok\u003c\/a\u003e,\n  and\n  \u003ca href=\"https:\/\/youtube.com\/@audiosellerz\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"color:#0066cc;text-decoration:underline;\"\u003eYouTube\u003c\/a\u003e.\n\u003c\/p\u003e","brand":"Sky High Car Audio","offers":[{"title":"D1","offer_id":44258786967692,"sku":"SHCA-FMX-6-D1","price":324.95,"currency_code":"USD","in_stock":false},{"title":"D2","offer_id":44258787000460,"sku":"SHCA-FMX-6-D2","price":324.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5076\/8524\/files\/Remove_background_project-3__53899.webp?v=1751497374","url":"https:\/\/audiosellerz.com\/products\/sky-high-car-audio-fmx-6-5-subwoofer-600w-rms-d1-d2","provider":"Audio Sellerz","version":"1.0","type":"link"}