{"product_id":"stereo-integrity-m350-carbon-midrange-pair","title":"Stereo Integrity M350 Carbon | 3.5 Inch Midrange - Pair","description":"\u003cstyle\u003e\n.si-desc{font-family:'Helvetica Neue',Arial,sans-serif;line-height:1.75;color:#1e293b;max-width:1200px;margin:0 auto;background:#ffffff}\n.si-hero{background:linear-gradient(135deg,#0b0b0c 0%,#2d3139 100%);padding:52px 36px;text-align:center;color:#ffffff}\n.si-hero .si-brand{font-size:.85em;letter-spacing:.3em;text-transform:uppercase;color:#cbd5e1;margin:0 0 10px 0}\n.si-hero .si-title{font-size:2.4em;font-weight:800;letter-spacing:1px;margin:0 0 8px 0;color:#ffffff}\n.si-hero .si-subtitle{font-size:1.15em;font-weight:300;color:#e2e8f0;margin:0 0 22px 0}\n.si-badges{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}\n.si-badge{background:rgba(255,255,255,.08);border:1px solid #9ca3af;color:#f8fafc;padding:7px 18px;border-radius:20px;font-size:.88em;font-weight:600}\n.si-section{padding:44px 36px;border-bottom:1px solid #e2e8f0;background:#ffffff}\n.si-section.si-alt{background:#f5f6f8}\n.si-section h2{color:#111827;font-size:1.8em;font-weight:700;margin:0 0 18px 0;padding-bottom:10px;border-bottom:3px solid #B91C1C}\n.si-section p{font-size:1.04em;color:#334155;margin:0 0 15px 0}\n.si-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;margin:22px 0}\n.si-card{background:#ffffff;border:1px solid #e2e8f0;border-top:4px solid #B91C1C;border-radius:8px;padding:20px}\n.si-card h3{color:#111827;font-size:1.08em;font-weight:700;margin:0 0 8px 0}\n.si-card p{font-size:.97em;color:#475569;margin:0}\n.si-note{background:#f5f6f8;border-left:5px solid #B91C1C;padding:18px 22px;margin:22px 0;border-radius:0 8px 8px 0}\n.si-note p{margin:0;color:#334155}\n.si-link{display:inline-block;background:#B91C1C;color:#ffffff;text-decoration:none;font-weight:700;padding:12px 24px;border-radius:8px;margin:6px 0}\n.si-cta{background:linear-gradient(135deg,#0b0b0c 0%,#2d3139 100%);padding:44px 36px;text-align:center;color:#ffffff}\n.si-cta h2{color:#ffffff;font-size:1.6em;margin:0 0 12px 0}\n.si-cta p{color:#e5e7eb;font-size:1.04em;margin:0 0 8px 0}\n@media (max-width:600px){.si-grid{grid-template-columns:1fr}.si-hero,.si-section,.si-cta{padding:34px 18px}.si-hero .si-title{font-size:1.8em}}\n\u003c\/style\u003e\n\u003cdiv class=\"si-desc\"\u003e\n\u003cdiv class=\"si-hero\"\u003e\n\u003cp class=\"si-brand\"\u003eStereo Integrity\u003c\/p\u003e\n\u003cp class=\"si-title\"\u003eM350 Carbon\u003c\/p\u003e\n\u003cp class=\"si-subtitle\"\u003e3.5 Inch Carbon Fiber Dome Midrange | Sold as a Pair\u003c\/p\u003e\n\u003cdiv class=\"si-badges\"\u003e\n\u003cspan class=\"si-badge\"\u003eCarbon Fiber Dome\u003c\/span\u003e \u003cspan class=\"si-badge\"\u003e2 in Copper Voice Coil\u003c\/span\u003e \u003cspan class=\"si-badge\"\u003e4 mm One-Way Xmax\u003c\/span\u003e \u003cspan class=\"si-badge\"\u003e36 mm Mounting Depth\u003c\/span\u003e \u003cspan class=\"si-badge\"\u003e400 Hz to 5,000 Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-section\"\u003e\n\u003ch2\u003eA Different Approach to a 3.5 Inch Midrange\u003c\/h2\u003e\n\u003cp\u003eThe M350 Carbon is a completely new 3.5 inch midrange built around an unusual idea: a full 2 inch diameter voice coil with the spider mounted inside the voice coil former. Putting the spider inside the coil gives it room for smooth, ample travel, and Stereo Integrity says the large coil increases thermal power handling dramatically compared with a conventional 3.5 inch design.\u003c\/p\u003e\n\u003cp\u003eIt is also shallow. The M350 mounts in 36 mm, 13.5 mm less than the M3 Carbon, which opens up more mounting locations and makes installation easier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-section si-alt\"\u003e\n\u003ch2\u003eEngineering Highlights\u003c\/h2\u003e\n\u003cdiv class=\"si-grid\"\u003e\n\u003cdiv class=\"si-card\"\u003e\n\u003ch3\u003eFull Carbon Fiber Dome\u003c\/h3\u003e\n\u003cp\u003eThe dome is the moving diaphragm, so Stereo Integrity made it from full carbon fiber for its strength to weight ratio. A custom tooled carrier joins the spider to the dome and keeps the coil, spider, dome, and surround in alignment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-card\"\u003e\n\u003ch3\u003eUnderhung Neodymium Motor\u003c\/h3\u003e\n\u003cp\u003eThe new underhung neodymium cup motor increases motor strength for higher sensitivity and delivers 4 mm of one-way linear travel at 70 percent Bl, which Stereo Integrity says is 35 percent more than its predecessor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-card\"\u003e\n\u003ch3\u003e2 Inch Copper Coil on Kapton\u003c\/h3\u003e\n\u003cp\u003eThe copper coil is wound on a lightweight Kapton former that eliminates eddy currents, with a copper pole sleeve and a solid aluminum Faraday ring at the magnet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-card\"\u003e\n\u003ch3\u003eTidy Terminal Block\u003c\/h3\u003e\n\u003cp\u003eA minimalist cast aluminum frame carries a terminal block with the voice coil leads soldered directly in place for easy speaker connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-section\"\u003e\n\u003ch2\u003eCrossover Recommendation\u003c\/h2\u003e\n\u003cp\u003eStereo Integrity recommends using the M350 Carbon from 400 Hz to 5,000 Hz. The specification sheet lists a frequency response of 400 Hz to 20,000 Hz and a sealed volume of up to 0.25 cubic feet if you build a pod or back chamber.\u003c\/p\u003e\n\u003cdiv class=\"si-note\"\u003e\u003cp\u003e\u003cstrong\u003eUpgrading from the M3 Carbon:\u003c\/strong\u003e Stereo Integrity designed the M350 as an easy swap for the M3 Carbon. Its published cutout is 74 mm and outer diameter 94 mm, compared with 72.5 mm and 94.4 mm for the M3 Carbon, so confirm the fit before you cut.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-section\"\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cdiv class=\"si-note\"\u003e\u003cp\u003e\u003cstrong\u003eOuter diameter:\u003c\/strong\u003e 94 mm. \u003cstrong\u003eCutout:\u003c\/strong\u003e 74 mm. \u003cstrong\u003eMounting depth:\u003c\/strong\u003e 36 mm. \u003cstrong\u003eMotor diameter:\u003c\/strong\u003e 74 mm without boot. \u003cstrong\u003eMounting holes:\u003c\/strong\u003e 5. \u003cstrong\u003eBaffle to top of surround:\u003c\/strong\u003e 7 mm. \u003cstrong\u003eMinimum grille clearance:\u003c\/strong\u003e 4 mm. Sold as a pair.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"si-cta\"\u003e\n\u003ch2\u003eAuthorized Stereo Integrity Dealer\u003c\/h2\u003e\n\u003cp\u003eAudio Intensity is an authorized Stereo Integrity dealer, and we build enclosures around their drivers.\u003c\/p\u003e\n\u003cp\u003eCall 931-563-5151 and we will help you plan a front stage around the M350 Carbon.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Stereo Integrity","offers":[{"title":"Default Title","offer_id":44924108210265,"sku":"SI-M350-CARBON","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/stereo-integrity-m350-carbon-basket-angle.jpg?v=1789577072","url":"https:\/\/audiointensity.com\/products\/stereo-integrity-m350-carbon-midrange-pair","provider":"Audio Intensity","version":"1.0","type":"link"}