{"product_id":"pair-of-soundxtreme-6-in-3-way-350-watts-coaxial-car-audio-speaker-cea-rated-2-speakers","title":"SoundXtreme ST-603","description":"\u003ch2 data-section-id=\"s9up8h\" data-start=\"113\" data-end=\"163\"\u003eFull-Range 3-Way Sound Performance Upgrade\u003c\/h2\u003e\n\u003cp data-start=\"164\" data-end=\"498\"\u003eThe SoundXtreme ST-603 6-inch coaxial speakers deliver a full-range 3-way audio experience designed to significantly improve clarity and output over factory-installed systems. By separating audio into bass, midrange, and high frequencies, the system provides a more detailed and immersive listening experience across all music genres.\u003c\/p\u003e\n\u003cp data-start=\"500\" data-end=\"659\"\u003eWith a peak power handling of 350 watts per pair, these speakers offer strong performance for users seeking a louder, more dynamic soundstage in their vehicle.\u003c\/p\u003e\n\u003ch2 data-section-id=\"27908p\" data-start=\"666\" data-end=\"719\"\u003eStrong Bass Response \u0026amp; Clear High Frequencies\u003c\/h2\u003e\n\u003cp data-start=\"720\" data-end=\"1021\"\u003eBuilt with a polypropylene woofer cone and flexible rubber surround, the ST-603 is engineered to produce solid mid-bass response while maintaining durability over time. The 30mm PEI dome tweeter and super tweeter enhance high-frequency detail, delivering crisp vocals and bright instrument separation.\u003c\/p\u003e\n\u003cp data-start=\"1023\" data-end=\"1158\"\u003eThis combination ensures balanced sound reproduction, making your music clearer, more vibrant, and more enjoyable during daily driving.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1621s9v\" data-start=\"1165\" data-end=\"1217\"\u003eDurable Construction \u0026amp; Easy Installation Fit\u003c\/h2\u003e\n\u003cp data-start=\"1218\" data-end=\"1468\"\u003eDesigned with a steel high-quality basket and heat-resistant components, the ST-603 is built to withstand demanding automotive environments. The 4-ohm impedance and moderate sensitivity make it compatible with most factory and aftermarket head units.\u003c\/p\u003e\n\u003cp data-start=\"1470\" data-end=\"1629\"\u003eIts 6-inch size and standard mounting depth allow for straightforward replacement of OEM speakers, making it a practical upgrade without complex modifications.\u003c\/p\u003e\n\u003chr data-start=\"1631\" data-end=\"1634\"\u003e\n\u003ch2 data-section-id=\"1wf6jk6\" data-start=\"1636\" data-end=\"1651\"\u003eHighlights\u003c\/h2\u003e\n\u003cul data-start=\"1652\" data-end=\"2299\"\u003e\n\u003cli data-section-id=\"1dqo4xh\" data-start=\"1652\" data-end=\"1713\"\u003e3-way coaxial speaker design for full-range audio clarity\u003c\/li\u003e\n\u003cli data-section-id=\"q641rn\" data-start=\"1714\" data-end=\"1768\"\u003e6-inch speaker size for wide vehicle compatibility\u003c\/li\u003e\n\u003cli data-section-id=\"89aj7v\" data-start=\"1769\" data-end=\"1806\"\u003e350W peak power handling per pair\u003c\/li\u003e\n\u003cli data-section-id=\"lo65p8\" data-start=\"1807\" data-end=\"1854\"\u003e89dB sensitivity for efficient sound output\u003c\/li\u003e\n\u003cli data-section-id=\"j8bkwd\" data-start=\"1855\" data-end=\"1905\"\u003e4-ohm impedance for broad system compatibility\u003c\/li\u003e\n\u003cli data-section-id=\"1w4j5q4\" data-start=\"1906\" data-end=\"1962\"\u003ePolypropylene woofer for strong mid-bass performance\u003c\/li\u003e\n\u003cli data-section-id=\"1bh2bmf\" data-start=\"1963\" data-end=\"2028\"\u003eFlexible rubber surround for improved durability and movement\u003c\/li\u003e\n\u003cli data-section-id=\"13m3yvk\" data-start=\"2029\" data-end=\"2088\"\u003e30mm PEI dome tweeter for crisp high-frequency response\u003c\/li\u003e\n\u003cli data-section-id=\"xkzd6k\" data-start=\"2089\" data-end=\"2144\"\u003eAdditional super tweeter for enhanced treble detail\u003c\/li\u003e\n\u003cli data-section-id=\"1g0ocvn\" data-start=\"2145\" data-end=\"2187\"\u003eFrequency response range: 65Hz – 20kHz\u003c\/li\u003e\n\u003cli data-section-id=\"11qam5j\" data-start=\"2188\" data-end=\"2242\"\u003eSteel basket construction for long-term durability\u003c\/li\u003e\n\u003cli data-section-id=\"eddx3o\" data-start=\"2243\" data-end=\"2299\"\u003eHeat-resistant design for demanding audio conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2301\" data-end=\"2304\"\u003e\n\u003ch2 data-section-id=\"1qqb6bp\" data-start=\"2306\" data-end=\"2327\"\u003ePackage Contents\u003c\/h2\u003e\n\u003cul data-start=\"2328\" data-end=\"2470\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"zttpzp\" data-start=\"2328\" data-end=\"2387\"\u003e2 × SoundXtreme ST-603 6\" 3-Way Coaxial Speakers (Pair)\u003c\/li\u003e\n\u003cli data-section-id=\"hwmdb2\" data-start=\"2388\" data-end=\"2412\"\u003e1 × Speaker Wire Set\u003c\/li\u003e\n\u003cli data-section-id=\"1yirkud\" data-start=\"2413\" data-end=\"2439\"\u003e1 × Mounting Screw Kit\u003c\/li\u003e\n\u003cli data-section-id=\"o8swzd\" data-start=\"2440\" data-end=\"2470\" data-is-last-node=\"\"\u003e1 × User Installation Manual\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SoundXtreme","offers":[{"title":"Default Title","offer_id":45686860021951,"sku":"631034092305","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0533\/6252\/4351\/files\/71SPGOMq7ZL.jpg?v=1780607932","url":"https:\/\/nsidistributor.com\/products\/pair-of-soundxtreme-6-in-3-way-350-watts-coaxial-car-audio-speaker-cea-rated-2-speakers","provider":"NSI Audio Distributing","version":"1.0","type":"link"}