MartinLogan Motion Foundation F1

Product highlights:

• 1" x 0.94" Gen2 Obsidian Folded Motion® tweeter with custom waveguide
• 5-1/2" aluminum cone midrange driver with cast aluminum basket
• three 5-1/2" aluminum cone bass drivers with cast aluminum baskets
• bass-reflex (ported) cabinet
• frequency response: 41-23,000 Hz (±3dB)
• sensitivity: 92 dB
• nominal impedance: 4 ohms
• recommended amplifier power: 15-200 watts
• removable grilles
• five-way binding post speaker terminals

Dimensions and warranty:

• 8-5/16"W x 41-7/16"H x 14-7/16"D
• weight: 46.5 lbs.
• warranty: 5 years (with product registration)
• 60-day returns
• MFR # FF1B