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The Fohhn® AT-40 is an extremely powerful, high-capacity speaker system in a comparatively compact housing. It combines efficiency, speech intelligibility, sound quality and design at the highest level.

The AT-40 is equipped with state-of-the-art time-aligned 12”/1.4” Neodymium speakers and is therefore extremely lightweight. It can be fitted with either an 80°x50° or 60°x50° rotating CD horn (HxV), depending on the application. A precision-made crossover with electronic high-frequency protection circuit is also integrated. The multiply birch wood housing is reinforced with steel brackets and equipped with 9x M8 and 3x M6 threaded inserts for safe installation in accordance with all current regulations. The AT-40 produces a perfect sound when combined with subwoofers AS-31 or AS-40 and operates as a fullrange or mid-high system.

>connector panel<
In low-impedance and 100V applications, the connector panel leaves nothing to be desired. 2 Speakon sockets and an 8-way Phoenix terminal strip with accompanying connector are available. If the terminal strip is used, the complete connecting panel can be covered so that only a single cable is visible. All connections to the 100V transformer are routed via the terminal strip and the two Speakon sockets.

Sport arenas, multi-functional halls, stadiums, theatres, musicals, theme parks, discos and similar venues.

>Weatherproof version (optional)<
Wooden Housing, special weatherproof plastic coating, impregnated speakers, design and dimensions unchanged.


electro-acoustical features  
acoustic design passive loudspeaker, 2-way, bass reflex
components [*] 12“ / 1,4“ on rotatable CD-horn, with self-resetting IPC[*]-HF protection, fully neodym
power rating (nominal) [1] 500 W
power rating (program) [2] 1000 W
power rating (peak) [3] 2000 W
sensitivity [4] 100 dB
maximum SPL [3] 131 dB
frequency range [5] 45 Hz – 20 kHz
nominal dispersion (h x v) [6] 80° x 50° or 60° x 50°
nominal impedance 8 ohms
enclosure birch plywood cabinet, metal strengthened
protection grille ball impact resistant metal, powder coated finish
rigging points 9x M8 and 3x M6 thread
connections 2x Neutrik NL4 Speakon and 8-pole Phoenix connector
standard colours textured finish black or white
frontal design acoustic foam, same colour as enclosure
dimensions (W x H x D) approx. 380 x 585 x 410 mm
weight [7] approx. 24 kg
optional features  
integrated 100 V-transformer 120/60/30 W or 240/120/60 W
optional colours all RAL-colours
weather protection scratch-proof plastic coating, impregnated speaker membranes
CAAD simulation data ULYSSES, EASE
[1] according to IEC-60268-5 long term  
[2] according to IEC-60268-5 short term  
[3] Peak, 20 ms with bandpass filtered pink noise signal according to IEC 60268-2 at one octave above the lower limit of the frequency range.  
[4] 2,83 V at 8 ohms (2 V at 4 ohms, 4 V at 16 ohms) at a distance of 1 meter under anechoic fullspace conditions  
[5] -10 dB under anechoic halfspace-conditions  
[6] horizontal x vertical at -6 dB, rotatable horn  
[7] net weight without optional equipment  
[*] Intelligent Protection Circuit. Voltage-controlled semiconductor circuit protecting the HF-driver against overload highly effective and with very short attack time.  


Wall bracket, universal adjustment 360° for AT-30/35/40/50 and heavy duty also for AT-08/09/10/201, adapter plate 90°-rotatable


Vertical bracket for AT-30/35/40


Horizontal bracket for AT-30/35/40

Safety eyebolt

Eyebolt DIN 580, zinc, for safety, EB-6: M6 thread for AT-061/07/08/09/10, EB-8: M8 thread for AT-20/21/30/35/40/50/66


Reducing flange, 36mm dia. with M8x18mm male thread for AT-10/201/30/35/40/50

Fohhn Audio Soft

Easy, convenient handling. Laptop and Fohhn Audio Software for intuitive control and monitoring of all connected Fohhn audio devices with integrated DSP. Clear graphical user interface for rapid access to the speaker database, status display and all audio devices integrated in the Fohhn DSP.


Wall bracket for LX-220, LEN-220, LC-220 and AT-35/40/50

High-performance 2-way passive speaker

High-performance 2-way passive speaker, equipped with one 12“-neodymium-sub-mid speaker and one 1,4“- neodymium HF-driver on a 90° revolvable CD horn in time-aligned speaker arrangement. The speaker is temporary able to work under 2000 W and generates acoustic pressure of maximal 131 dB. In a wide frequency range of 45 Hz to 20 kHz, the speaker has a defined dispersion of 80° x 50° or 60° x 50° (h x v). High-tensile multiplex birch wood enclosure with rounded sides, strutted with internal metal brackets to maintain safety instructions. Durable textured finish, available in black or white. Optional available in all RAL-colours or in weatherproof polyurethane-coating with impregnated speaker membranes. For the protection of the speaker chassis and the electronics, the enclosure is equipped with a ball impact resistant, extremely sound-permeable front grille, which is made of powder-coated steel and equipped with a moisture- and dust repellent acoustic foam in enclosure colour. Nine pieces M8 and three pieces M6 thread applications in ground, back and upper side are integrated to the admission of ring studs and system brackets. The loudspeaker system is optionally available with 100V technology in different performance classes up to 240 W. Connections: 2x Neutrik NL4 Speakon and pluggable 8-pin Phoenix terminal. The connections are sunk-in and protected below a cover on the back. All contacts exist twice, to connect very easy and safe to the next speaker. Specific brackets to assemble the system on ceilings, walls and traverses are available. Simulation data CAAD for ULYSSES and EASE are available.

electro-acoustical features
acoustic design: passive 2-way speaker, bass reflex
system components: 12“/ 1,4“ on revolvable CD horn,time-aligned, with self-resetting IPC-HF protection, fully neodymium
power rating (nominal): 500 W
power rating (program): 1000 W
power rating (peak): 2000 W
nominal SPL: 100 dB
maximum SPL: 131 dB
frequency range: 45 Hz – 20 kHz
nominal dispersion (h x v): 80° x 50° or 60° x 50°
nominal impedance: 8 ohms

enclosure: metal strutted multiplex birch wood
protection grill: ball impact-resistant protective steel grille, powder-coated
rigging points: 9x M8 and 3x M6 thread
connections: 2x Neutrik NL4 Speakon and 8-pin Phoenix terminal
standard colours: textured finish black or white
frontal design: acoustic foam in enclosure colour
dimensions (W x H x D): approx. 380 x 585 x 410 mm
weight: approx. 24 kg

optional features
integrated 100 V-transformer: 120/60/30 W or 240/120/60 W
optional colours: all RAL-colours
weather resistence: polyurethane coating, membrane impregnation

CAAD simulation data: ULYSSES, EASE

make: Fohhn Audio AG
type: AT-40
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