With the release of the AD-Systems Stium we satisfy our customers demand for a compact, very powerful horn loaded MF/HF loudspeaker system suiting well to the day-to-day rental business needs. The Stium closes the gap between compact systems and line arrays and recommends itself always when high SPL is necessary, but the use of a line array is economically or acoustically inappropriate. Well… and it does away with lots of negative attributes associated with traditional horn designs.
The AD-Systems Stium is an very compact, horn loaded fullrange loudspeaker system incorporating two 12“ neodymium low-mid speakers and a high resolution 1.4“ high frequency compression driver. Thanks to its acoustic design it is capable to generate sound pressure levels in excess of 140dB with low distortion. Compared to traditional designs this unit reaches a very low cutoff frequency of 100Hz and so can be used together with any common subwoofer system. Its nominal coverage pattern is 75° x 50°, but the high frequency horn is rotatable by 90° to get a 50° x 75° pattern. The loudspeaker incorporates a passive crossover and has a net weight of just 42 kilogrammes – features which make the Stium a highly economic and flexible product.
Corresponding with a high performance system of its class the AD-Systems Stium is layed out as semi-active system, i.e. a complex, passive 2.5-way crossover provides phase coherent combination of both ways as well as a specifically optimized coverage pattern, while equalizing and speaker protection is provided by the AD-Systems Impuls series DSP amplifiers. That‘s why powering of the Stium requires only one amplifier channel.
The handling of the slender, polyurea coated enclosure is pleasantly easy due to the well placed handles on both sides. The available accessories round the systems concept perfectly off: The Quick-Rig flying bar is mounted within seconds and enables easy set up due to the optimally matched pivot point. The detachable front board as well as the padded transport cover protect from dirt and rough handling effectively.
The Stium is the preferred choice for applications, where maximum profitability meets high sound pressure requirements. Its decent shape and ease of use, its low crossover capability and its remarkable output-to-weight ratio lead to a uniquely versatile system.
1.4“ ND compression driver w/ 3.0“ VC
on 75°x 50° BEM CD-Horn passive crossover w/ phase correction