{"product_id":"helix-ci5-m50fm-s3-50mm-advanced-broadband-speaker","title":"HELIX Ci5 M50FM-S3 50mm Advanced Broadband Speaker","description":"This 50mm advanced broadband speaker delivers exceptional sound quality and versatile installation options for demanding car audio builds. A silicate-coated paper cone ensures precise impulse response and natural sound, while the powerful push-pull neodymium magnet system boosts efficiency and minimises distortion. The compact design and FlexMount50 technology allow easy fitment into tight OEM locations, making it perfect for full-range or centre-channel setups. With a wide frequency range of 300Hz to 20kHz, it can operate without a separate tweeter for streamlined systems. Pair it with HELIX or MATCH amplifiers to unlock maximum performance and dynamic headroom.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eType\u003c\/strong\u003e: Broadband Speaker\u003cbr\u003e\u003cstrong\u003eSize\u003c\/strong\u003e: 50 mm\u003cbr\u003e\u003cstrong\u003eImpedance\u003c\/strong\u003e: 3 Ω\u003cbr\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e: 300 Hz - 20,000 Hz\u003cbr\u003e\u003cstrong\u003eRMS Power Handling\u003c\/strong\u003e: 70 W\u003cbr\u003e\u003cstrong\u003eMax Power Handling\u003c\/strong\u003e: 100 W\u003cbr\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e: 89 dB @ 2.83V\/1m\u003cbr\u003e\u003cstrong\u003eDC Resistance (Re)\u003c\/strong\u003e: 3.1 Ω\u003cbr\u003e\u003cstrong\u003eResonant Frequency (Fs)\u003c\/strong\u003e: 240 Hz\u003cbr\u003e\u003cstrong\u003eMechanical Q (Qms)\u003c\/strong\u003e: 3.09\u003cbr\u003e\u003cstrong\u003eElectrical Q (Qes)\u003c\/strong\u003e: 0.80\u003cbr\u003e\u003cstrong\u003eTotal Q (Qts)\u003c\/strong\u003e: 0.68\u003cbr\u003e\u003cstrong\u003eCompliance (Cms)\u003c\/strong\u003e: 300 µm\/N\u003cbr\u003e\u003cstrong\u003eEquivalent Volume (Vas)\u003c\/strong\u003e: 0.16 L\u003cbr\u003e\u003cstrong\u003eForce Factor (B*I)\u003c\/strong\u003e: 2.8 Tm\u003cbr\u003e\u003cstrong\u003eCone Area (Sd)\u003c\/strong\u003e: 19.6 cm²\u003cbr\u003e\u003cstrong\u003eMoving Mass (Mms)\u003c\/strong\u003e: 1.43 g\u003cbr\u003e\u003cstrong\u003eMechanical Resistance (Rms)\u003c\/strong\u003e: 0.71 kg\/s\u003cbr\u003e\u003cstrong\u003eVoice Coil Diameter\u003c\/strong\u003e: 20 mm\u003cbr\u003e\u003cstrong\u003eVoice Coil Winding Width\u003c\/strong\u003e: 7 mm\u003cbr\u003e\u003cstrong\u003eMax Linear Excursion (Xlin)\u003c\/strong\u003e: +\/- 2.5 mm\u003cbr\u003e\u003cstrong\u003eMax Mechanical Excursion (Xmax)\u003c\/strong\u003e: +\/- 3.5 mm\u003cbr\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 59.5 mm\u003cbr\u003e\u003cstrong\u003eOuter Diameter with Universal Mounting Ring\u003c\/strong\u003e: 70.0 mm\u003cbr\u003e\u003cstrong\u003eMounting Diameter\u003c\/strong\u003e: 50.9 mm\u003cbr\u003e\u003cstrong\u003eMounting Depth\u003c\/strong\u003e: 25.2 mm\u003cbr\u003e\u003cstrong\u003eCone Material\u003c\/strong\u003e: Silicate-Coated Paper\u003cbr\u003e\u003cstrong\u003eBasket Material\u003c\/strong\u003e: High-Tech Polymer Composite with Glass Beads\u003cbr\u003e\u003cstrong\u003eMagnet System\u003c\/strong\u003e: Push-Pull Neodymium\u003cbr\u003e\u003cstrong\u003eMounting System\u003c\/strong\u003e: FlexMount50\u003cbr\u003e","brand":"HELIX","offers":[{"title":"Default Title","offer_id":53773316358481,"sku":"CI21200","price":149.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1041\/2772\/5905\/files\/Ci5-M50FM-S3hBYRhmnOTYFXr_d793afc2-84fa-4ed3-9c14-f71e8f96bae5.jpg?v=1778713556","url":"https:\/\/shoponyxac.co.uk\/products\/helix-ci5-m50fm-s3-50mm-advanced-broadband-speaker","provider":"Onyx Auto Care","version":"1.0","type":"link"}