One important sub system of the speakers are the AirForce enclosure. This is a proprietary design, derived from the acoustic horn, the most efficient design. The inside of the cabinet is made from top quality, custom-made canadian maple plywood. This sub enclosure is doubled with high quality, fomaldehydefree fiber panels, machined and assembled with tenon and mortisse for years of trouble free operation. The outer skin is finished in a variety of custom, low VOC laquers, hand polished for a perfect and long lasting finish. Like any high quality musical instrument, the cabinets should not be exposed to heat, moisture or direct sunlight, as variations in heat / humidity can affect the integrity of the assembly. Drive units Kantate Low frequencies (30 Hz to 2.500 Hz) The low frequency unit is a 6 in., high power driver with a cone made of carbon fiber / Rohacell / carbon fiber. This unique sandwich construction garantees mechanical integrity for distortion-free operation. The rigid cone assembly is controlled by a 3 inc. voice coil for high power handling and efficient heat dissipation. The voice coil / magnet assembly is ventilated. High frequencies (2 500 Hz to 30 000 Hz) The high efficiency drive units is fitted with an extremely rigid, pure Beryllium membrane capable of pure, undistorted output of frequencies up and above 30 kHz. Mechanical ground Both drive units are mounted on precision machined aluminum mechanical ground for durability, mechanical integrity and ease of service, should you ever wish to service or modify components. ActiveDrive™ Unit On the back of the speaker the ActiveDrive™ unit is mounted in a seperate sub enclosure sealed from the main acoustic enclosure.

System Description Alle Arteluthe loudspeakers are the result of intensive research and development and represent a true state of the art DSP/Active loudspeaker for critical listening, where ultimate musicality is required. We designed speakers as a cost-no-object reasearch project with the goal of building the most accurate loudspeaker, with extremely smooth off-axis dispersion, able to sustain high sound pressure levels over a long period of time with minimal distortion and coloration. ActiveDrive™ Design Kantate is a fully active design as each drive unit is individually powered by a 350 watt dedicated amplifier. There are no passive components between amplifiers and drive units, resulting in a highly defined sound with no artefacts associated with passive components. Digital Signal Processing (DSP) Each speaker comes with an on-board DSP. The incoming analog signal is transferred to digital high resolution (96kHz / 24 bit) format and mathematical operations are performed on the signal to correct phase, frequency and time. There are four distinct programs (presets) accessible on the back panel: flat response; "hifi" response (2 dB trebble and bass tilt); smooth vocal (high frequency roll off, mid bass tilt) and sub integration (low frequency roll off). Reference sound The speakers are a Reference grade playback system and will perform beautifully in a dedicated, semi reverberant rooms. We do not provide the user with control over individual frequencies or crossover functions as all functions have been optimized for reference operation right from the start. However, we do offer custom presets to suit individual owners who want a perfectly adapted reference sound to a perticular environment. Consult your dealer for details. AirForce Enclosure

Welcome to the World of Arteluthe

Arteluthe A Division of 7953135 Canada Inc. 20 Place Valmont, Lorraine QC, Canada J6Z 3X8 514 245 3985

Import for Scandinavia Mindtech Audio Systems www.mindtech.dk mail@mindtech.dk Tlf.: +45 3800 765307