Martin Audio Portable Speaker AM12 User Manual

AM12  
Full-range weatherised enclosure  
features  
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Compact two-way passive system  
Textured high-density polyurethane coating  
both internal and external  
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User rotatable 80º x 50º horn  
High power output  
Five year limited warranty  
applications  
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Sports Stadia  
Arenas  
Exhibition halls  
The AM12 is a 2-way passive enclosure that has been  
specifically designed for applications such as stadiums and  
arenas where high SPL and weather resistance are of prime  
importance. The AM12 has a 300 watt 12" (300mm) direct  
radiating reflex loaded low frequency transducer with a  
waterproof cone coupled with a 1" (25mm) exit HF  
compression driver mounted on a rotatable 80˚ horizontal x  
50˚ vertical constant directivity horn. The enclosure is of a  
vertical trapezoid design and horizontally formatted to reduce  
sightline obstruction. The AM12 is finished, both internally and  
externally, in a textured, high-density polyurethane coating. It is  
supplied with a protective grille that is heavy galvanised and  
powder-coated and fitted with an integral water barrier to  
ensure product reliability over many years.  
technical specifications  
TYPE  
Compact, two-way passive trapezoid  
FREQUENCY RESPONSE (1) 65Hz-18kHz 3dB  
DRIVERS  
12" (300mm) bass driver with waterproof cone  
1" (25mm) exit compression driver  
300W AES, 1200W peak  
97dB  
RATED POWER (2)  
SENSITIVITY (3)  
MAXIMUM SPL (4)  
NOMINAL IMPEDANCE  
DISPERSION (-6dB)  
CROSSOVER  
120dB continuous, 126dB peak  
8 ohms  
80º horizontal, 50º vertical  
2kHz passive  
ENCLOSURE  
38 litre (1.3 cu foot) vented  
Multi laminate birch ply  
FINISH  
Textured high-density polyurethane coating  
applied externally and internally  
18 gauge punched steel, heavy galvanised and  
polyester-coated, with integral water barrier  
3m flying lead, with loop-out option  
12 x M10 threaded inserts  
PROTECTIVE GRILLE  
overall dimensions  
CONNECTORS  
FITTINGS  
OPTIONS  
DIMENSIONS  
30W or 150W line transformer (100/70V option)  
(W) 571mm x (H) 391mm x (D) 345mm  
(W) 22.5ins x (H) 15.4ins x (D) 13.6ins  
22.5kg (49.6lbs)  
WEIGHT  
25kg (55.1lbs) with 150W line transformer fitted  
Century Point, Halifax Road, Cressex Business Park,  
High Wycombe, Buckinghamshire HP12 3SL, England.  
Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669  
All information is Copyright © 2003 Martin Audio Ltd.  
 

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