{"product_id":"soundxtreme-st-680-5x7-6x8-3-way-coaxial-speakers","title":"SoundXtreme ST-680 5x7\/6x8\" 3-Way Coaxial Speakers","description":"\u003cp\u003eThe SoundXtreme ST-680 is a pair of 5x7\/6x8-inch 3-way coaxial car speakers designed as a practical replacement for worn or underperforming factory door or rear-deck speakers. Their dual-fit sizing is intended for vehicles that use either a 5x7-inch or 6x8-inch speaker opening. The pair uses a 4-ohm design for connection to compatible car-audio systems.\u003c\/p\u003e\u003cp\u003eThese speakers are suited to everyday listeners who want a straightforward full-range speaker upgrade without adding separate tweeters or external crossovers. The coaxial layout places the high-frequency driver within the woofer assembly, keeping installation comparatively simple. A 3-way architecture combines the mid-woofer and tweeter elements in each speaker assembly.\u003c\/p\u003e\u003cp\u003eThe ST-680 is specified for 350 watts peak power per pair, with a recommended amplifier range of 10 to 75 watts RMS per channel. Its 90 dB sensitivity and 45 Hz to 20,000 Hz frequency-response specification describe a speaker intended to cover bass, vocal, and treble ranges in a conventional car-audio setup. Power should be matched to the stated RMS recommendation rather than the peak rating.\u003c\/p\u003e\u003cp\u003eA polypropylene mid-woofer cone works with a polyester-foam surround, while the high-frequency section uses a 1\/2-inch PEI balanced-dome tweeter. The speaker also uses a neodymium motor structure and a stamped-steel basket. SoundXtreme lists EVC, or Extended Voice Coil, technology as part of the speaker design.\u003c\/p\u003e\u003cp\u003eThe ST-680 can be used with a compatible factory radio or aftermarket head unit, or with an amplifier that delivers suitable power at 4 ohms. It is a sensible option when replacing speakers in vehicles with compatible 5x7-inch or 6x8-inch mounting locations. Confirm the vehicle opening, mounting clearance, wiring connection, and speaker polarity before installation.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Fit 5x7\/6x8 Size:\u003c\/strong\u003e Supports compatible oval speaker locations in either common size format.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-Way Coaxial Design:\u003c\/strong\u003e Integrates multiple driver elements within each speaker assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Ohm Impedance:\u003c\/strong\u003e Matches many conventional car-audio speaker circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePEI Dome Tweeter:\u003c\/strong\u003e Adds a dedicated high-frequency driver for treble reproduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolypropylene Mid-Woofer:\u003c\/strong\u003e Provides the primary cone for midrange and lower-frequency output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStamped-Steel Basket:\u003c\/strong\u003e Provides a rigid structural frame for speaker mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe ST-680 combines a polypropylene mid-woofer cone, polyester-foam surround, 1\/2-inch PEI balanced-dome tweeter, neodymium motor structure, and stamped-steel basket. These materials form a conventional coaxial speaker construction with the tweeter integrated into the main speaker assembly. The listed frequency response is 45 Hz to 20,000 Hz, and listed sensitivity is 90 dB.\u003c\/p\u003e\u003cp\u003eVerify that the vehicle accepts a 5x7-inch or 6x8-inch speaker and that the opening supports the stated 5 x 7-3\/16-inch cutout dimensions. The listed top-mount depth is 3\/8 inch, but installers should measure available clearance at the intended location before fitting the speakers. The package is listed with speaker wire, screws, and a user manual; use correct polarity and connect only to a compatible 4-ohm audio source.\u003c\/p\u003e","brand":"SoundXtreme","offers":[{"title":"Default Title","offer_id":45660787540038,"sku":"ST-680","price":39.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/81jlhU4HpFL.jpg?v=1784447803","url":"https:\/\/audiowatt.store\/products\/soundxtreme-st-680-5x7-6x8-3-way-coaxial-speakers","provider":"Audio Watt Store","version":"1.0","type":"link"}