{"product_id":"helix-ci3-c165-2fm-s3-mk2-2-way-performance-coaxial-speaker-system-165mm","title":"HELIX Ci3 C165.2FM-S3 MK2 2-Way Performance Coaxial Speaker System 165mm","description":"The HELIX COMPOSE i3 platform delivers a 2-way coaxial system that pairs a 165mm midbass with a 20mm aluminium dome tweeter for precise, detailed sound. Its high-efficiency 3-ohm design maximises power from compatible amplifiers, while the Cenosphere-coated paper cone and high-tech polymer basket ensure rigidity and low resonance. The ProConnect terminal offers secure wiring via conventional cables or optional WireKits, and the FlexMount165 system allows vehicle-specific installation using adaptor rings. This set includes two speakers and mounting hardware for a straightforward upgrade.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eType\u003c\/strong\u003e: 2-way coaxial speaker system\u003cbr\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e: 165 mm\u003cbr\u003e\u003cstrong\u003ePower Handling RMS \/ Max\u003c\/strong\u003e: 100 \/ 150 Watts\u003cbr\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e: 60 Hz - 25,000 Hz\u003cbr\u003e\u003cstrong\u003eImpedance\u003c\/strong\u003e: 3 Ohm\u003cbr\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e: 92 dB @ 2.83V \/ 1m\u003cbr\u003e\u003cstrong\u003eOuter Diameter\u003c\/strong\u003e: 165 mm\u003cbr\u003e\u003cstrong\u003eInstallation Diameter\u003c\/strong\u003e: 142 mm\u003cbr\u003e\u003cstrong\u003eInstallation Depth\u003c\/strong\u003e: 60.7 mm\u003cbr\u003e\u003cstrong\u003eTweeter\u003c\/strong\u003e: 20 mm aluminium dome with neodymium magnet\u003cbr\u003e\u003cstrong\u003eMidbass Cone Material\u003c\/strong\u003e: Paper with Cenosphere coating\u003cbr\u003e\u003cstrong\u003eBasket Material\u003c\/strong\u003e: High-tech polymer composite with glass sphere reinforcement\u003cbr\u003e\u003cstrong\u003eCrossover\u003c\/strong\u003e: Integrated, 6 dB highpass\u003cbr\u003e\u003cstrong\u003eVoice Coil Diameter (Midbass)\u003c\/strong\u003e: 25 mm\u003cbr\u003e\u003cstrong\u003eMax. Linear Excursion (Midbass)\u003c\/strong\u003e: +\/- 3.2 mm\u003cbr\u003e\u003cstrong\u003eDC Resistance (Midbass)\u003c\/strong\u003e: 3.1 Ohm\u003cbr\u003e\u003cstrong\u003eResonance Frequency (Midbass)\u003c\/strong\u003e: 72 Hz\u003cbr\u003e\u003cstrong\u003eTotal Q Factor (Midbass)\u003c\/strong\u003e: 0.82\u003cbr\u003e\u003cstrong\u003eCompliance (Midbass)\u003c\/strong\u003e: 466 μm\/N\u003cbr\u003e\u003cstrong\u003eEquivalent Air Volume (Midbass)\u003c\/strong\u003e: 11.5 L\u003cbr\u003e\u003cstrong\u003eForce Factor (Midbass)\u003c\/strong\u003e: 3.8 Tm\u003cbr\u003e\u003cstrong\u003eCone Area (Midbass)\u003c\/strong\u003e: 133 cm²\u003cbr\u003e\u003cstrong\u003eMoving Mass (Midbass)\u003c\/strong\u003e: 10.4 g\u003cbr\u003e\u003cstrong\u003eMechanical Resistance (Midbass)\u003c\/strong\u003e: 1.17 kg\/s\u003cbr\u003e\u003cstrong\u003eVoice Coil Winding Height (Midbass)\u003c\/strong\u003e: 10.5 mm\u003cbr\u003e\u003cstrong\u003eTerminal\u003c\/strong\u003e: ProConnect (automotive grade, interlocked, reverse polarity protection)\u003cbr\u003e\u003cstrong\u003eMounting System\u003c\/strong\u003e: FlexMount165 (compatible with optional adaptor rings)\u003cbr\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e: FlexMount165, WireKits\u003cbr\u003e\u003cstrong\u003eScope of Delivery\u003c\/strong\u003e: 2 x Ci3 C165.2FM-S3 MK2, 1 x mounting material\u003cbr\u003e\u003cstrong\u003eWeight (per speaker)\u003c\/strong\u003e: 1.07 kg\u003cbr\u003e","brand":"HELIX","offers":[{"title":"Default Title","offer_id":53772530909521,"sku":"CI22615","price":154.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1041\/2772\/5905\/files\/HELIX_COMPOSE_Ci3-C165-2FM-S3-MK2_EISA.jpg?v=1778705807","url":"https:\/\/shoponyxac.co.uk\/products\/helix-ci3-c165-2fm-s3-mk2-2-way-performance-coaxial-speaker-system-165mm","provider":"Onyx Auto Care","version":"1.0","type":"link"}