{"product_id":"martinlogan-motion-foundation-f1-floorstanding-speaker","title":"MartinLogan Motion Foundation F1 Floorstanding Speaker","description":"\u003ch2 style=\"font-size:1.25em;margin:0 0 0.35em 0;\"\u003eWhat You Need to Know\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:1.1em;margin:1.2em 0 0.3em 0;\"\u003eFloorstanding Performance, Compact Footprint\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe Foundation F1 delivers the scale and authority of a true tower in a slim cabinet just over 8 inches wide—ideal for modestly sized rooms where the larger Foundation F2 won't fit. Four custom 5.5-inch aluminum drivers handle the low end: three dedicated bass drivers plus a midrange in its own sealed chamber, arranged with Floor Bounce Compensation for natural, full-bodied sound down to 41Hz.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.1em;margin:1.2em 0 0.3em 0;\"\u003eMartinLogan's Signature Thin-Film Sound\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe star of the show is the Gen2 Obsidian Folded Motion Tweeter S, trickle-down technology from MartinLogan's famous electrostatic designs. Its pleated thin-film diaphragm packs 3.5 square inches of surface area into a tiny space—fast, light, and low-excursion for stunning detail with virtually zero distortion. The Folded Motion Waveguide controls dispersion in a 90° x 90° pattern, minimizing room reflections while keeping the sound consistent in every seat. A hand-tuned McCracken-Vojtko crossover ties the 3-way design together.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.1em;margin:1.2em 0 0.3em 0;\"\u003eA Finish for Every Room, Sold by Each\u003c\/h3\u003e\n\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eChoose Walnut with bronze trim, Gloss Black with gunmetal trim, or Satin White with silver trim—all with Secure-Lock grilles you can leave on, off, or rotate. The F1 is sold individually: buy two for stereo, or build a full Motion Foundation surround system one channel at a time.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;\"\u003eFeatures \u0026amp; Specifications\u003c\/h2\u003e\n\n\u003cp style=\"margin:0 0 0.45em 0;line-height:1.5;\"\u003e\u003cstrong\u003eGen2 Obsidian Folded Motion Tweeter S\u003c\/strong\u003e — Thin-film speed and detail derived from MartinLogan electrostatic technology.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.45em 0;line-height:1.5;\"\u003e\u003cstrong\u003eFolded Motion Waveguide\u003c\/strong\u003e — Controlled 90° x 90° dispersion for precise imaging across a wide seating area.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.45em 0;line-height:1.5;\"\u003e\u003cstrong\u003eQuad 5.5\" Aluminum Drivers\u003c\/strong\u003e — Three bass drivers plus a sealed-chamber midrange; bass to 41Hz.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.45em 0;line-height:1.5;\"\u003e\u003cstrong\u003eMcCracken-Vojtko Crossover\u003c\/strong\u003e — 3-way, low-distortion design fine-tuned with MartinLogan's blind listening tests.\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.45em 0;line-height:1.5;\"\u003e\u003cstrong\u003eEasy to Drive\u003c\/strong\u003e — 92dB sensitivity—sings with amplifiers from 15 to 200 watts.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;\"\u003eSpecifications\u003c\/h2\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003eType: 3-Way Rear-Ported Floorstanding Speaker\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 41Hz - 23kHz ± 3dB\u003c\/li\u003e\n\u003cli\u003eSensitivity: 92dB\u003c\/li\u003e\n\u003cli\u003eImpedance: 4 Ohms (compatible with 4, 6, or 8 Ohm rated amplifiers)\u003c\/li\u003e\n\u003cli\u003eRecommended Amplifier Power: 15 - 200 Watts\u003c\/li\u003e\n\u003cli\u003eCrossover Frequencies: 240Hz, 2,700Hz\u003c\/li\u003e\n\u003cli\u003eTweeter: 0.94\" x 1\" Gen2 Folded Motion Tweeter S (3.5 sq. in. diaphragm)\u003c\/li\u003e\n\u003cli\u003eMidrange Driver: 5.5\" Aluminum Cone, Sealed Chamber\u003c\/li\u003e\n\u003cli\u003eBass Drivers: 3 x 5.5\" Aluminum Cones\u003c\/li\u003e\n\u003cli\u003eTweeter Dispersion: 90° x 90°\u003c\/li\u003e\n\u003cli\u003eInputs: 5-Way Binding Posts (Non Bi-Wire)\u003c\/li\u003e\n\u003cli\u003eDimensions (with feet): 41-7\/16\"H x 8-3\/8\"W x 14-7\/16\"D\u003c\/li\u003e\n\u003cli\u003eWeight: 46.5 lbs\u003c\/li\u003e\n\u003cli\u003eFinish: Walnut, Gloss Black, or Satin White\u003c\/li\u003e\n\u003cli\u003eSold By: Each\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp style=\"margin:1.1em 0 0.15em 0;\"\u003e\u003cstrong\u003eIs this the price for one speaker or a pair?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.4em 0;line-height:1.55;\"\u003eThe Foundation F1 is sold by each. Order two for a stereo pair, or combine with Motion Foundation bookshelf and center channel models for a matched home theater system.\u003c\/p\u003e\n\n\u003cp style=\"margin:1.1em 0 0.15em 0;\"\u003e\u003cstrong\u003eWhat amplifier do I need?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.4em 0;line-height:1.55;\"\u003eWith 92dB sensitivity and a recommended range of 15 to 200 watts, the F1 is remarkably easy to drive—most receivers and integrated amps will do nicely. Its 4-ohm impedance is compatible with 4, 6, or 8-ohm rated amplifiers. Ask us if you're unsure about your electronics.\u003c\/p\u003e\n\n\u003cp style=\"margin:1.1em 0 0.15em 0;\"\u003e\u003cstrong\u003eWhat makes the Folded Motion tweeter different?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp style=\"margin:0 0 0.4em 0;line-height:1.55;\"\u003eInstead of pushing air with a dome, it squeezes air between the folds of a pleated thin-film diaphragm—like an accordion. The result is far more surface area, faster response, and the airy, detailed high end MartinLogan is famous for, at a fraction of electrostatic prices.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;\"\u003eWhy Audio Advisor?\u003c\/h2\u003e\n\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e40+ Years of Expertise\u003c\/strong\u003e – Helping music lovers build better systems since 1981.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60-Day Money-Back Guarantee\u003c\/strong\u003e – Hear it in your own system with confidence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal Product Experts\u003c\/strong\u003e – Friendly advice before and after your purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Shipping\u003c\/strong\u003e – On qualifying orders over $49.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Financing\u003c\/strong\u003e – Convenient payment options available.\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"MartinLogan","offers":[{"title":"New \/ Satin White \/ New","offer_id":45981955096749,"sku":"NEW-MLMOFOF1-SATWHT","price":849.99,"currency_code":"USD","in_stock":true},{"title":"New \/ Satin White \/ Demo","offer_id":45981955129517,"sku":"DEMO-MLMOFOF1-SATWHT","price":849.99,"currency_code":"USD","in_stock":false},{"title":"New \/ Black \/ New","offer_id":45982937514157,"sku":"NEW-MLMOFOF1-BLK","price":849.99,"currency_code":"USD","in_stock":true},{"title":"New \/ Black \/ Demo","offer_id":45982937546925,"sku":"DEMO-MLMOFOF1-BLK","price":849.99,"currency_code":"USD","in_stock":false},{"title":"New \/ Walnut \/ New","offer_id":45983070060717,"sku":"NEW-MLMOFOF1-WAL","price":849.99,"currency_code":"USD","in_stock":true},{"title":"New \/ Walnut \/ Demo","offer_id":45983070093485,"sku":"DEMO-MLMOFOF1-WAL","price":849.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/MLMOFOF1_SATWHT_03_2023__37338.1729753525.1280.1280.jpg?v=1778146919","url":"https:\/\/www.audioadvisor.com\/products\/martinlogan-motion-foundation-f1-floorstanding-speaker","provider":"Audio Advisor","version":"1.0","type":"link"}