Ai 81

Column Loudspeaker


Unibody HCDF Technology*
2-way Passive Speaker
Symmetrical MTM design for superior imaging and precision
Ultra-Slim stylish design
Outstanding intelligibility
Applications: Lounge Bar / Restaurant, Museums, Conference, Discrete installations


The Ai81 is a 2-way passive ultra-slim column loudspeaker specifically designed to ensure a minimal-discreet visual impact and an elegant design for an easy and seamlessly layout integration while ensuring the sound quality for which Outline has always been recognized.

This tiny, modular, externally powered loudspeaker provides the best performance when installed on a flat surface. It features eight 1.3” neodymium magnet driver and one 0.7” treated silk dome tweeter producing a wide nominal dispersion and a maximum SPL peak of 112 dB.

With a nominal impedance of 16 ohms and requiring only one single channel, it is possible to deploy up to eight Ai81 with just one single amplification channel on a parallel cost-saving installation solution.

Also, a passive crossover (manufactured with top-grade components) takes care to split the LF and HF and provides single and double protection for the drivers (LF and HF respectively).

All the above enclosed in a compact, refined and elegant design weighting just 0.85 kg (1.85 lb).

The cabinet, in HCDF (Hydrophobic Compact Density Fiber), is coated with polyurethane paint ensuring the correct operation even in the toughest places; while the grill, made of galvanized steel, features an epoxy powder coating. Custom RAL colour options are available to perfectly match any architectural layout.


Frequency Response (-10 dB) 300 Hz – 20 kHz
Horizontal Dispersion 160°
Vertical Dispersion 40°
Impedance (Nom / Min) 16 Ω / 16.6 Ω
Watt AES (Peak) * 320 W
Maximum SPL Output ** 112 dB SPL
* according to AES2-2012 (+12 dB) standard
** calculated using +12 dB Crest Factor signal (AES2-2012), Half space


Component Low 8 x 1.3” NdFeB Full Range driver
Component High 0.7″ treated silk dome tweeter
Connector 2-pin Euroblock
Cabinet Material HCDF (Hydrophobic Compact Density Fiber)
Cabinet Finish Black or White textured polyurethane paint (overpainted RAL colors on request)
Grill Epoxy powder coated
Installation points 2 through holes diam. 4 mm on front / 3 x M4 on back
Height 570 mm – 22 4/8”
Width 46 mm – 1 6/8”
Depth 25 mm – 1”
Weight 0.85 kg – 1.85 lb


Ai Series User Manual

Apr 2023

Ai 81 Architectural Specifications

Oct 2021

Architechtural Series Brochure

Oct 2020

Ai 81 Brochure

May 2021

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