Alesis AirFX (2001)
A real-time effects processor controlled by hand motion above an infrared sensor, released by Alesis in 2001.
Overview
The Alesis AirFX is a performance effects processor made by Alesis Studio Electronics, Inc., released in 2001. It features 45 programs (0–44) and uses hand movements over a hemispheric infrared sensor to control effects in real time. The Axyz™ Controller detects motion along the x, y, and z axes, allowing manipulation of parameters without physical contact. It includes an Effect Hold function to freeze the current effect and a master bypass, both activated via a single rotary control. The unit has a single LED display that shows patch and parameter information.
Specifications
| Effects | 32 different effects including filters, flangers, phasers, delays, pitch shifters, and ring modulators |
| Programs | 45 programs (0–44) |
| Audio Processing Resolution | 16-bit/44.1kHz and 16-bit/48kHz |
| Inputs | Left and Right RCA inputs |
| Outputs | Left and Right RCA outputs, headphone output |
| Other Connections | MIDI In, Out/Thru, footswitch input |
| Control | Hemispheric infrared tracker (Axyz™ Controller), single rotary control for program selection, hold, and bypass |
| Power Supply | 9VAC, 1500mA wall plug (supplied) |
| Mounting | Threads on bottom for mic stand attachment |
Design
The AirFX uses a 3-axis infrared control system centered on a dome-shaped sensor that detects hand movement in the air. The Axyz™ technology is patent-pending and sensitive to ambient light, which may require adjusting hand position when used near bright sources. The unit is built with solid construction and internally described as "rather spartan." It contains no internal expression pedal—instead, it uses a laser-based system for motion detection. The design allows for real-time manipulation of filters, modulation, and other effects through gesture.
Context
The Alesis Akira, a rackmount multi-effects unit, is described as being in the same spirit as the AirFX. The Alesis INEKO shares nearly identical effects and three-parameter control but uses physical buttons instead of infrared sensing.
Market
Common issues include broken solder joints on input/output jacks, leading to intermittent or no sound, and potential damage from using incorrect power adapters (e.g., 11VAC instead of 9VAC). Repairs often involve re-flowing solder on jacks and checking capacitors. Used units sometimes lack the original power cord. The unit has a 4.5 out of 5 overall rating from 113 users, with perfect scores in quality and manufacturer support.
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