{"product_id":"cicada-audio-cmw8-s4-8-inch-mid-woofer-4-ohm","title":"Cicada Audio CMW8.S4 – 8\" Mid-Bass Woofer (4Ω, 250W RMS, Carbon Matrix Composite)","description":"\u003ch2\u003e8\" mid-bass at 4Ω – a bridge-ready woofer for Harley-Davidson® saddlebag lids, lower fairings and custom enclosures\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Cicada Audio CMW8.S4 is an 8-inch 4Ω mid-bass woofer rated at 250W RMS (500W peak), with 89dB sensitivity and 50Hz–7kHz response. It uses a Carbon Matrix Composite™ cone, 51mm (2.0\") edge-wound aluminium voice coil on a TIL former, Y35 ferrite motor, NBR half-roll surround and a vented, powder-coated steel basket. Sold individually.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis is the \u003ca href=\"\/products\/cicada-audio-cmw8-s2-8-inch-mid-woofer-2-ohm\"\u003eCMW8.S2\u003c\/a\u003e wound for 4Ω. The higher impedance allows bridging and keeps current draw down in a full system. Next to Cicada's 500W \u003ca href=\"\/products\/cicada-audio-cmb8-s4-midbass-8-inch\"\u003eCMB8.S4\u003c\/a\u003e, it is the moderate-power 8\", with a response that reaches much higher (7kHz against 3kHz). That makes it a flexible choice when the woofer has to blend with speakers above it.\u003c\/p\u003e\n\n\u003ch3\u003eWho This Is For\u003c\/h3\u003e\n\n\u003cp\u003eBuilders driving a pair of 8\" woofers from bridged amplifier channels, in a \u003ca href=\"\/products\/cicada-14chdlid8-8-inch-saddlebag-lid-speaker-kit-2014-2023-vivid-black\"\u003e14CHDLID8\u003c\/a\u003e lid kit on a 2014–2023 Touring bike, an aftermarket 8\" lower or a custom enclosure. It also suits all-4Ω systems where every speaker shares the same load. For stereo channels at 2Ω, the \u003ca href=\"\/products\/cicada-audio-cmw8-s2-8-inch-mid-woofer-2-ohm\"\u003eCMW8.S2\u003c\/a\u003e takes more from each one.\u003c\/p\u003e\n\n\u003ch3\u003eWhat This Is Best For\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA bridged pair on a compact amp\u003c\/strong\u003e – the \u003ca href=\"\/products\/cicada-audio-flx500-4-4-channel-class-d-motorcycle-amplifier\"\u003eFLX500.4\u003c\/a\u003e bridges to 250W × 2 into 4Ω, an exact match for this driver's 250W RMS rating, from Cicada's smallest FLX chassis.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStereo at 4Ω alongside other speakers\u003c\/strong\u003e – the \u003ca href=\"\/products\/cicada-audio-flx1400-4-4-channel-motorcycle-amplifier\"\u003eFLX1400.4\u003c\/a\u003e (225W × 4 into 4Ω) and \u003ca href=\"\/products\/cicada-audio-wx900-4-waterproof-4-channel-amplifier\"\u003eWX900.4\u003c\/a\u003e (200W × 4 into 4Ω) both run it within its rating in a four-channel, all-4Ω system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower-fairing fill\u003c\/strong\u003e – a response reaching 7kHz lets an 8\" in the lowers carry the upper bass and lower midrange. It bridges the gap between the fairing stage and the bags.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact depth\u003c\/strong\u003e – 82mm (3.22\") mounting depth suits lids and lowers where a deeper driver won't clear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"maa-alert\"\u003e\n  \u003ch3\u003eIs the 4Ω CMW8 Right for Your Amp?\u003c\/h3\u003e\n  \u003cp\u003eChoose the CMW8.S4 when bridging. Each channel of a bridged pair sees half the speaker's impedance, so a 4Ω woofer keeps a 2Ω-stable amp within its rating. Choose it too when building all-4Ω. On a mono amp, two in parallel present 2Ω; check that the amp's 2Ω output per driver stays at or below 250W. For stereo channels on a 2Ω-stable amp, the \u003ca href=\"\/products\/cicada-audio-cmw8-s2-8-inch-mid-woofer-2-ohm\"\u003eCMW8.S2\u003c\/a\u003e is the better fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eThe Bottom Line\u003c\/h3\u003e\n\n\u003cp\u003eThe CMW8.S4 is a compact, efficient 8\" woofer for bridged and all-4Ω builds: 250W RMS, a response up to 7kHz and weather-ready construction for lids and lowers. For a system planned around 8\" positions, \u003ca href=\"\/pages\/custom-audio-builds\"\u003etalk to us about a custom build\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePosition\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStreet Glide®, Road Glide®, Electra Glide® and Ultra Limited (with \u003ca href=\"\/products\/cicada-14chdlid8-8-inch-saddlebag-lid-speaker-kit-2014-2023-vivid-black\"\u003e14CHDLID8\u003c\/a\u003e lid kit)\u003c\/td\u003e\n\u003ctd\u003eSaddlebag lid\u003c\/td\u003e\n\u003ctd\u003e2014–2023\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRoad Glide® with an aftermarket 8\" lower fairing\u003c\/td\u003e\n\u003ctd\u003eLower fairing\u003c\/td\u003e\n\u003ctd\u003eVaries by lower\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCustom saddlebag, Tour-Pak® or bespoke enclosures built for an 8\" driver\u003c\/td\u003e\n\u003ctd\u003eCustom enclosure\u003c\/td\u003e\n\u003ctd\u003eAny\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003c\/p\u003e\n\n\u003chr class=\"maa-tab-split\"\u003e\n\n\u003ch3\u003eWhat's Inside the CMW8.S4\u003c\/h3\u003e\n\n\u003cp\u003eA \u003cstrong\u003eY35 ferrite motor\u003c\/strong\u003e drives a \u003cstrong\u003e51mm (2.0\") edge-wound aluminium voice coil\u003c\/strong\u003e on a \u003cstrong\u003eTIL composite former\u003c\/strong\u003e, sealed in \u003cstrong\u003eBlack Coat™ thermoset resin\u003c\/strong\u003e. The low-mass winding gives quick response. The ferrite motor holds a stable field through heat cycles. \u003cem\u003eOn the road: consistent mid-bass from cold start to the end of a hot run.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCarbon Matrix Composite™ cone\u003c\/strong\u003e is stiff and light, on an \u003cstrong\u003eNBR half-roll surround\u003c\/strong\u003e that controls travel and resists the elements. \u003cem\u003eOn the road: bass that stays tight at speed.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003epowder-coated stamped steel basket\u003c\/strong\u003e has \u003cstrong\u003eVortex Flow Venting™\u003c\/strong\u003e to cool the coil. The \u003cstrong\u003eRain or Shine™\u003c\/strong\u003e construction resists moisture and UV. \u003cem\u003eOn the road: ready for spray in the lowers and sun on the lids.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy 4Ω\u003c\/h3\u003e\n\n\u003cp\u003eAt 4Ω the amplifier supplies half the current it would at 2Ω, which means less heat and less load on the charging system. 4Ω is also what makes bridging safe on 2Ω-stable amps, because the bridged pair works each channel into half the load.\u003c\/p\u003e\n\n\u003ch3\u003eFrequency Coverage and Tuning\u003c\/h3\u003e\n\n\u003cp\u003eThe CMW8.S4 covers 50Hz to 7kHz (±3dB). Set the low-pass to suit the speakers above, and a high-pass (subsonic) just below the enclosure's useful range to protect the cone. No crossover is included.\u003c\/p\u003e\n\n\u003ch3\u003eMounting\u003c\/h3\u003e\n\n\u003cp\u003eMounting depth is 82mm (3.22\") and mounting diameter is 182mm (7.16\"). The CMW8 suits the 14CHDLID8 lid kit and aftermarket 8\" lower fairings. For a custom enclosure, build around these figures.\u003c\/p\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\u003e203mm (8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDriver Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMid-bass woofer (no tweeter)\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\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Handling – Peak\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e500W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50Hz – 7kHz (±3dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e89dB (1W\/1m)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCone\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarbon Matrix Composite™ (CMC™)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurround\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNBR half-roll\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoice Coil\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e51mm (2.0\") edge-wound aluminium, TIL composite former, Black Coat™ resin\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eY35 ferrite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBasket\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePowder-coated stamped steel with 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\u003e82mm (3.22\")\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e182mm (7.16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeather Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRain or Shine™ – moisture and UV resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCrossover\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone – set by amplifier or DSP\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\u003eIndividually (one driver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003c\/p\u003e\n\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Cicada Audio CMW8.S4 mid-bass woofer\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cicada Audio","offers":[{"title":"Default Title","offer_id":51131700642039,"sku":"CMW8.S4","price":425.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6505\/1639\/files\/coming_soon_placeholder_02253a0a-2e58-4bf0-8d6b-13661d95a85a.png?v=1790807708","url":"https:\/\/www.motorcycleaudio.com.au\/products\/cicada-audio-cmw8-s4-8-inch-mid-woofer-4-ohm","provider":"Motorcycle Audio Australia","version":"1.0","type":"link"}