The Outline Ai 81 2-Way Ultra-Slim Passive Column Loudspeaker redefines architectural audio with its ultra-slim 46mm-wide, 25mm-deep profile and professional-grade performance. Combining form and function, its HCDF unibody cabinet construction ensures durability even in demanding environments while maintaining a discreet aesthetic ideal for restaurants, museums, conference rooms, and premium installations. Equipped with eight 1.3" neodymium full-range drivers and a 0.7" treated silk dome tweeter in a symmetrical MTM configuration, it delivers exceptional clarity, wide 160° horizontal dispersion, and controlled 40° vertical coverage for precise sound reproduction. With a 16-ohm nominal impedance, up to eight Ai 81 units can be connected per amplifier channel, offering cost-effective scalability. The passive crossover features top-grade components and driver protection, while the lightweight 0.85 kg design allows flexible mounting options. Finished with a polyurethane-coated HCDF cabinet and epoxy powder-coated steel grille, the Ai 81 is built to last and available in custom RAL colors, making it a perfect choice for discreet yet high-performance architectural audio applications.