{"product_id":"b2-audio-3-way-6-5-ref-sq-car-audio-component-speaker-system-w-3-way-crossover","title":"B2 Audio 6.5\" REF SQ 3-Way Component Speaker System w\/Crossover","description":"\u003cul\u003e\n\u003cli\u003eCOMPLETE REFERENCE PACKAGE: Includes woofers, mids, tweeters, and premium passive crossover networks for a full front-stage solution\u003c\/li\u003e\n\u003cli\u003eAUDIOPHILE SOUND QUALITY: Delivers exceptional imaging, tonal balance, and detail across the full frequency spectrum\u003c\/li\u003e\n\u003cli\u003ePREMIUM CROSSOVER NETWORKS: REF3WBX passive crossovers properly distribute frequencies while allowing tweeter tuning adjustment\u003c\/li\u003e\n\u003cli\u003eHIGH-END MATERIALS THROUGHOUT: Carbon fiber cones, ceramic dome tweeters, CNC aluminum housings, and oversized crossover components\u003c\/li\u003e\n\u003cli\u003eSHOW BUILD READY: Transparent crossover covers and exposed copper coils create an ultra-premium installation appearance\u003c\/li\u003e\n\u003cli\u003eBUILT FOR SQL \u0026amp; SQ SYSTEMS: Perfect for reference-level daily drivers, DSP systems, and competition-inspired builds\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eB2 Audio 3-Way 6.5\" REF SQ Car Audio Component Speaker System w\/ 3-way Crossover\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eThis Listing Includes:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003e(2) 6.5\" Carbon Fiber Cone Mid-Woofers\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e(2) 3\" Carbon Fiber Full-Range Midrange Speakers\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e(2) 1\" Ceramic Dome Tweeters\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e(2) B2 Audio REF3WBX 3-Way Passive Crossovers\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eStep into true reference-grade sound with the B2 Audio REFSQ63 + REF3WBX Complete 3-Way Component Speaker Package. Designed for elite sound quality builds and audiophile-level performance, this complete front-stage solution combines the incredible detail and realism of the REFSQ63 Reference Series speaker system with the precision tuning and premium signal management of the REF3WBX passive crossovers.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThis is not your average component set. Every element of this package is engineered for accuracy, staging, tonal balance, and emotional impact. From the deep, controlled midbass response of the 6.5\" carbon fiber woofers, to the rich vocal presence of the 3\" full-range mids, all the way to the crisp shimmer of the ceramic dome tweeters, the REFSQ63 delivers breathtaking clarity across the entire frequency spectrum.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003ePaired with the stunning REF3WBX passive crossover networks, this system gains smooth frequency distribution, refined transition points, and adjustable tweeter attenuation for dialed-in tuning flexibility. The exposed crossover architecture featuring oversized copper coils and acrylic covers adds pure “show build†energy while maintaining audiophile-grade performance.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eWhether you’re building a high-end SQL daily driver, a competition-ready sound quality car, or a clean European-inspired install, this package delivers the detail, dynamics, and realism expected from B2 Audio’s Reference Series.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eComplete 3-way reference component speaker system\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eIncludes matching REF3WBX passive crossover pair\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMulti-layer carbon fiber woofer and midrange cones\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003e1\" ceramic dome tweeters for exceptional detail\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eAdjustable tweeter attenuation on crossover networks\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCNC-machined aluminum speaker components\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFEA-optimized neodymium motor structures\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003ePremium exposed crossover design with acrylic covers\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDesigned for elite SQ and audiophile-grade installations\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eExcellent for DSP-integrated or passive crossover systems\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eComponent Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003e6.5\" Midwoofer:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eMax Power Handling: 100W\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRMS Power Handling: 70W\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNominal Impedance: 4 Ohms\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Diameter: 1.4\" \/ 35.5 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCone Material: Multi-layer Carbon Fiber\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet: High-Density Ferrite\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrequency Response: 50 Hz - 10 kHz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSensitivity (1W\/1M): 87.6 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 2.93\" \/ 74.5 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCutout Diameter: 5.31\" \/ 135 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOverall Diameter: 6.5\" \/ 165 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eUnit Weight: 3.74 lbs \/ 1700g\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003e3\" Mid-Range:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eMax Power Handling: 100W\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eRMS Power Handling: 30W\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNominal Impedance: 4 Ohms\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDC Resistance: 3.35 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Diameter: 1.2\" \/ 30.5 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Former: TIL (non-conductive)\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Wire: Copper\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet: Neodymium, FEA-optimized with copper cap\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCone Material: Multi-layer Carbon Fiber\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBasket: Vented Die-Cast Aluminum\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrequency Response (-3dB): 200 Hz - 20,000 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSensitivity (1W\/1M): 88.0 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 1.52\" \/ 38.6 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCutout Diameter: 3.02\" \/ 76.8 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOverall Diameter: 3.62\" \/ 92 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eUnit Weight: 450g\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eT\/S Parameters:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eFs: 131.8 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQms: 5.575\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQes: 0.379\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQts: 0.355\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBL: 5.392 T-M\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMms: 3.97 g\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCms: 0.367 mm\/N\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVas: 0.475 L\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSd: 30.19 cm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLe: 0.151 mH\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eZo Max Impedance: 52.653 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eZmin: 3.974 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eReference Efficiency: 0.278%\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003e1\" Ceramic Dome Tweeter\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eMax Power Handling: 75W Peak \/ 25W RMS\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eNominal Impedance: 3.0 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDC Resistance: 2.3 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Diameter: 1.0\" \/ 25.4 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Former: Polyimide\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVoice Coil Wire: CCAW\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCooling: Vented + copper conduction\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMagnet Structure: Internal dual neodymium\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDome Material: Ceramic\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSurround: VC-connected only - no dome interaction\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eHousing: CNC Aluminum for low resonance and thermal control\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eFrequency Response (-6dB): fs ~ 20,000 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eSensitivity (1W\/1M): 86.0 dB\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMounting Depth: 1.1\" \/ 28 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCutout Diameter: 1.79\" \/ 45.4 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eOverall Diameter: 2.24\" \/ 57 mm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eUnit Weight: 150g\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eT\/S Parameters:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eFs: 553.9 Hz\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQms: 3.359\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQes: 0.893\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQts: 0.705\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eBL: 2.691 T-M\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eMms: 0.808 g\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eCms: 0.102 mm\/N\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eVas: 9.386 mL\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eLe: 0.040 mH\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eZo Max Impedance: 10.955 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eZmin: 2.903 Ohm\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eReference Efficiency: 0.173%\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCrossover Specifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eModel: B2-REF3WBX\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eType: 3-Way Passive Crossover\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eConfiguration: Woofer \/ Midrange \/ Tweeter\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eTweeter Level Adjustment: Yes\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eConnection Type: Screw Terminal\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eProtective Cover: Clear Acrylic\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eQuantity: Pair\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eApplication: Car Audio Component Systems\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCrossover Dimensions:\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n  \u003cli\u003eLength: 5.5\"\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eWidth: 3.7\"\u003c\/li\u003e\n\u003cbr\u003e\n  \u003cli\u003eDepth: 1.6\"\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"B2 Audio","offers":[{"title":"Default Title","offer_id":48501364490488,"sku":"B2-REFSQ63-3WBX","price":799.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0029\/9384\/8365\/files\/2574748b3f7482065284c97ff1b79ce304c5e8796d2ee52647ac5f5a8efd6bf5.jpg?v=1779461378","url":"https:\/\/bigjeffaudio.com\/products\/b2-audio-3-way-6-5-ref-sq-car-audio-component-speaker-system-w-3-way-crossover","provider":"Big Jeff Online Inc","version":"1.0","type":"link"}