The Ersa Major is an all new integrated line array system intended for large scale concerts, festivals and sports events. The system is run in four-way active mode with the amplifiers flown in the array. The matching dual 18" PUKK sub-bass units can be flown or ground stacked.
The mid/high cabinet has dual OHM 10" midrange woofers with a coaxial compression driver mounted on a proprietary waveguide. The midrange drivers are loaded a fully horn loaded cabinet having a compact size of 750mm wide, 600mm deep and 300mm high.
The cabinet is three-way active with an impedance of 16 ohms allowing the use of four boxes to one tree-way amplifier.
The PUKK is a slot-loaded dual 18" reflex sub-woofer with the long excursion drivers mounted in push-pull configuration. A 2000 watt Class D amplifier is mounted in each cabinet with an integral DSP controller interfacing via an Ethernet connection.
Flown in the array is a housing which can accommodate up to four class D amplifiers. Each amplifier has three channels and can power four of the Ersa Major mid/high active cabinets. The amplifiers have built in DSP controller accepting both analogue and digital signals and communicating via Ethernet to a PC or MAC laptop.
The comprehensive flying system enables up to 16 mid/high cabinets to be flown with the amplifiers.
A new common DSP platform is under development for all future OHM speaker management. All DSP solutions will be freely groupable and configurable via this software. This means that multiple DSP's in the system can all be controlled as one cohesive unit. The Oyster is the first model in this new range and is intended mainly for fixed installation and mobile use as the control is only accessible via PC or MAC . The 2 input, 6 output unit has a front panel mounted USB port, Power, Signal and Peak LEDs and XLR connectors at the rear.
Activate is an all new portable PA system with double 12" subs and 8" + 1" compression driver tops. The top box can be used as a stand-alone full range speaker or as a high power mid/high pack with a dedicated Activate subwoofer which is a slot loaded reflex cabinet with the two speakers working in push pull mode.
Switch mode power supply amplifiers and Neodymium magnet motors make for a lightweight compact enclosure. The sub-woofer has an 800 watt amplifier, high pass filter and the top box has 250 watt low frequency and 100 watt HF amplifiers as well as EQ, Limiting and time aligning in both amplifiers. A gain control and a comprehensive array of connectors allow for the easy daisy chaining of the enclosures.
(Jim Evans)
