{"product_id":"cicada-audio-ch65-4c-6-5-pro-coaxial-horn-speakers","title":"Cicada Audio CH65.4C — Larry Frederick Classic 6.5″ Horn Coaxial Motorcycle Speakers (4Ω)","description":"\u003ch2\u003eThe Larry Frederick Classic horn — built for bridged and conservative builds.\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cicada Audio CH65.4C is the Larry Frederick Classic 6.5-inch horn coaxial in 4Ω — designed for 2014+ Harley-Davidson factory speaker positions. 250W RMS, 96.4 dB sensitivity, aluminium horn tweeter dome, Black Coat™ OFC mid-bass voice coil, N35SH neodymium motor, and an external 12 dB crossover in a die-cast aluminium basket with Vortex Flow Venting™. Sold in pairs.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe CH65.4C shares every construction element with the CH65.2C — the same Larry Frederick Classic horn design, the same 96.4 dB sensitivity, the same 250W RMS power handling. The difference is impedance: the 4Ω version presents a higher electrical load to the amplifier, which means lower current demand, more thermal margin, and compatibility with bridged amplifier configurations. For builds where the amplifier is running bridged, or where conservative system design is the priority, the CH65.4C is the correct impedance choice.\u003c\/p\u003e\n\n\u003ch3\u003eWho This Speaker Is For\u003c\/h3\u003e\n\n\u003cp\u003eFor riders who want the Larry Frederick Classic horn coaxial in a 4Ω configuration — bridged amplifier builds, conservative system designs where amplifier thermal margin matters, or multi-speaker installs where reducing total current demand on the system is a design constraint. For the standard stereo 2Ω configuration that extracts maximum power from a dedicated 2Ω-rated amplifier, the \u003ca href=\"\/products\/cicada-audio-ch65-2c-high-efficiency-horn-coaxial-speakers\"\u003eCH65.2C is the 2Ω variant\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat This Is Best For\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBridged amplifier configurations on 2014+ Street Glide or Road Glide\u003c\/strong\u003e — when front channels are bridged for higher per-channel output, the CH65.4C satisfies the 4Ω minimum load requirement on amplifiers including the \u003ca href=\"\/products\/cicada-audio-flx700-4-4-channel-motorcycle-amplifier\"\u003eFLX700.4\u003c\/a\u003e and \u003ca href=\"\/products\/cicada-audio-flx500-4-4-channel-class-d-motorcycle-amplifier\"\u003eFLX500.4\u003c\/a\u003e. Pair bridged output with the CH65.4C’s 250W RMS handling and gain structure accordingly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConservative builds where amplifier thermal margin is a priority\u003c\/strong\u003e — a 4Ω speaker draws less current from the amplifier at the same output level than a 2Ω speaker. In a compact fairing environment where the amplifier is running hard across multiple speaker positions, the 4Ω impedance on every driver reduces thermal build-up across the whole system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniform 4Ω horn builds across all positions\u003c\/strong\u003e — the CH65.4C pairs naturally with the \u003ca href=\"\/products\/cicada-audio-ch69-4w-all-weather-horn-coaxial-speakers\"\u003eCH69.4W\u003c\/a\u003e for builds where consistent 4Ω impedance across every horn speaker position is the design goal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRiders who prefer the horn character and need 4Ω\u003c\/strong\u003e — the horn tweeter’s sensitivity advantage and treble projection are the same regardless of impedance. Riders who want the CH65 sound in a 4Ω system don’t need to compromise on speaker performance to get it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"maa-alert\"\u003e\n  \u003ch3\u003e2Ω vs 4Ω — Choosing the Right Version\u003c\/h3\u003e\n  \u003cp\u003eThe CH65.4C is a 4Ω speaker. Choose the 4Ω version for bridged amplifier configurations, conservative system designs where amplifier thermal margin matters, or when the amplifier already delivers sufficient power at 4Ω. For maximum output from a dedicated 2Ω-rated amplifier in stereo, the \u003ca href=\"\/products\/cicada-audio-ch65-2c-high-efficiency-horn-coaxial-speakers\"\u003eCH65.2C (2Ω)\u003c\/a\u003e is the correct choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eThe Bottom Line\u003c\/h3\u003e\n\n\u003cp\u003eThe Larry Frederick Classic horn coaxial — 250W RMS, 96.4 dB, direct-fit for 2014+ Harley factory 6.5-inch positions — in the 4Ω configuration for bridged and conservative builds.\u003c\/p\u003e\n\n\u003cp\u003eReady to upgrade? Add to cart above. For the 2Ω variant, the \u003ca href=\"\/products\/cicada-audio-ch65-2c-high-efficiency-horn-coaxial-speakers\"\u003eCH65.2C\u003c\/a\u003e is the same speaker at 2Ω. For a larger-format horn coaxial in a custom position, the \u003ca href=\"\/products\/cicada-audio-ch69-4w-all-weather-horn-coaxial-speakers\"\u003eCH69.4W\u003c\/a\u003e is the 6×9 version in 4Ω.\u003c\/p\u003e\n\n\u003chr class=\"maa-tab-split\"\u003e\n\n\u003ch3\u003eWhat’s Inside the CH65.4C\u003c\/h3\u003e\n\n\u003cp\u003eThe CH65.4C is identical in construction to the \u003ca href=\"\/products\/cicada-audio-ch65-2c-high-efficiency-horn-coaxial-speakers\"\u003eCH65.2C\u003c\/a\u003e — the only difference between the two variants is impedance. All construction notes below apply equally to both versions.\u003c\/p\u003e\n\n\u003cp\u003eThe tweeter is an \u003cstrong\u003ealuminium dome in a horn waveguide\u003c\/strong\u003e — the defining element of the Larry Frederick Classic design. Horn loading couples the dome’s output to the air more efficiently than a free-air dome, which is why the CH65.4C measures 96.4 dB sensitivity. The aluminium dome delivers bright, extended, low-distortion high-frequency response. \u003cem\u003eOn the road: presence-forward treble that projects clearly through wind and engine noise at highway speed.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe mid-bass cone is \u003cstrong\u003ewater resistant treated paper\u003c\/strong\u003e — lightweight, thermally stable, and efficiently coupled to the motor. The \u003cstrong\u003e2-inch \/ 51mm Black Coat™ OFC copper mid-bass voice coil\u003c\/strong\u003e handles the thermal load of sustained 250W RMS operation with high conductivity and low resistance. The \u003cstrong\u003e1.4-inch \/ 36mm OFC copper tweeter voice coil\u003c\/strong\u003e completes the signal path with minimal thermal compromise.\u003c\/p\u003e\n\n\u003cp\u003eThe motor is an \u003cstrong\u003eN35SH neodymium\u003c\/strong\u003e — H-grade temperature rating for sustained thermal stability. The 4Ω impedance means the motor operates with lower current demand from the amplifier, adding thermal margin across both the driver and the amplifier stage. The \u003cstrong\u003edie-cast aluminium basket with Vortex Flow Venting™\u003c\/strong\u003e provides structural rigidity and active airflow management through the motor assembly.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eexternal 12 dB crossover\u003c\/strong\u003e is custom-tooled, vented, and encased — mounted separately from the driver, protected from weather and vibration, with the crossover point at 4 kHz.\u003c\/p\u003e\n\n\u003ch3\u003eSensitivity and Frequency Coverage\u003c\/h3\u003e\n\n\u003cp\u003eAt 96.4 dB (1W\/1m), the CH65.4C delivers the sensitivity that makes the horn coaxial format worthwhile in a motorcycle application. The 4Ω impedance means the amplifier runs at higher efficiency and lower current draw — in a multi-speaker build where the amplifier is driving front and rear positions simultaneously, the 4Ω impedance on every driver meaningfully reduces the total current demand on the system.\u003c\/p\u003e\n\n\u003cp\u003eFrequency response runs 75 Hz – 20 kHz (±5 dB). In a system with a dedicated sub or mid-bass channel handling the low end, the CH65.4C fills its frequency responsibility at output levels that remain audible over the riding environment.\u003c\/p\u003e\n\n\u003ch3\u003eWhy 4Ω — Bridged Amps and Thermal Margin\u003c\/h3\u003e\n\n\u003cp\u003eA 4Ω speaker presents a higher electrical load to the amplifier than a 2Ω speaker — lower current demand, less heat generated by the amplifier, and more tolerance for wiring impedance. For bridged amplifier configurations — where two amplifier channels are combined to drive a speaker pair at higher per-channel output — the 4Ω load satisfies the minimum impedance requirement on most amplifiers including the \u003ca href=\"\/products\/cicada-audio-flx500-4-4-channel-class-d-motorcycle-amplifier\"\u003eFLX500.4\u003c\/a\u003e and \u003ca href=\"\/products\/cicada-audio-flx700-4-4-channel-motorcycle-amplifier\"\u003eFLX700.4\u003c\/a\u003e. For stereo installs at the amp’s rated 2Ω output, the \u003ca href=\"\/products\/cicada-audio-ch65-2c-high-efficiency-horn-coaxial-speakers\"\u003eCH65.2C\u003c\/a\u003e is the matching choice.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDesigned for 2014+ Harley-Davidson factory 6.5-inch speaker positions. 0.5-inch spacer included for models where additional depth is required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHarley-Davidson Street Glide (2014+):\u003c\/strong\u003e Batwing fairing lower speaker positions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHarley-Davidson Road Glide (2014+):\u003c\/strong\u003e Fairing speaker positions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower Fairing (Road Glide® 2015–2023):\u003c\/strong\u003e Factory lower fairing speaker positions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHarley-Davidson Ultra Limited \/ Ultra Classic (2014+):\u003c\/strong\u003e Fairing and lids positions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHarley-Davidson CVO models (2014+):\u003c\/strong\u003e Factory 6.5-inch speaker positions.\u003c\/li\u003e\n  \u003cli\u003eMounting Depth: 76 mm (3.0 in). Mounting Diameter (cutout): 145.5 mm (5.7 in).\u003c\/li\u003e\n  \u003cli\u003eCompatible with 4Ω-rated amplifiers including bridged configurations — \u003ca href=\"\/products\/cicada-audio-flx500-4-4-channel-class-d-motorcycle-amplifier\"\u003eFLX500.4\u003c\/a\u003e, \u003ca href=\"\/products\/cicada-audio-flx700-4-4-channel-motorcycle-amplifier\"\u003eFLX700.4\u003c\/a\u003e, and other 4Ω-stable motorcycle amplifiers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eDriver Size\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e6.5 in\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eImpedance\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e4Ω nominal\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003ePower Handling — RMS\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e250W RMS\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003ePower Handling — MAX\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e500W peak\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e96.4 dB (1W\/1m)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e75 Hz – 20 kHz (±5 dB)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eVoice Coil — Mid-bass\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e2.0 in (51 mm) — Black Coat™ OFC copper\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eVoice Coil — Tweeter\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e1.4 in (36 mm) — OFC copper\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eMagnet Type\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eNeodymium N35SH\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eCone Material\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eWater resistant treated paper\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eTweeter Dome\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eAluminium\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eTweeter Loading\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eHorn waveguide\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eCrossover\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eExternal 12 dB @ 4 kHz — custom tooled, vented, encased\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eBasket\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eDie-cast aluminium — Vortex Flow Venting™\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eMounting Depth\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e76 mm (3.0 in)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eMounting Diameter (Cutout)\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e145.5 mm (5.7 in)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eWeather Resistance\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003eWater resistant cone and aluminium tweeter dome\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003e2 years\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd\u003e\u003cstrong\u003eSold As\u003c\/strong\u003e\u003c\/td\u003e\n    \u003ctd\u003ePair\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"Cicada Audio","offers":[{"title":"Default Title","offer_id":50351282258167,"sku":"CH65.4C","price":940.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6505\/1639\/files\/CH65.4C-1-Edited.png?v=1781140851","url":"https:\/\/www.motorcycleaudio.com.au\/products\/cicada-audio-ch65-4c-6-5-pro-coaxial-horn-speakers","provider":"Motorcycle Audio Australia","version":"1.0","type":"link"}