AD‐SYSTEMS Stium

With the release of the AD-Systems Stium we satisfy our customers demand for a compact, very powerful horn loaded MF/HF loudspeaker system well-suited to the day-to-day needs of the rental business. The Stium closes the gap between compact systems and line arrays and is the right choice when high SPL is necessary, but the use of a line array is economically or acoustically inappropriate.… and it does away with lots of negative attributes associated with traditional horn designs.

The AD-Systems Stium is a 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 of generating 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 kilograms – features which make the Stium a highly economic and flexible product.

Designed for semi-active operation

Corresponding with a high-performance system of this class, the AD-Systems Stium a semi-active system. A complex passive 2.5-way crossover provides phase coherent combination of both ways as well as a specifically-optimized coverage pattern, while equalization and speaker protection is provided by the AD-Systems DSP amplifiers. That’s why powering 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 system’s 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.

First choice with maximum profitability

The Stium is the preferred choice for applications where maximum profitability meets high sound pressure requirements. Its shape, ease of use, low crossover capability and its remarkable output-to-weight ratio make it a uniquely versatile system.

Application

• FOH system for audiences of 300 – 3,000 people
• Sidefill / Outfill / Infill / Drumfill for big stages
• Fully usable from 100Hz upwards, SPLmax >140dB
• Highly efficient, fully horn loaded loudspeaker system

Specifications

• 2 x 12″ Neodymium low mid woofer with 3″ voice coil
• 1.4″ Neodymium compression driver with 3″ voice coil
• 15 mm heavily-braced Baltic birch plywood with Polyurea coating
• Power handling RMS: 750 Watts RMS | 3.000 Watts Peak

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