Tender specification: IGS-4 Compact built-in subwoofer The passive subwoofer is suitable for installation in dropped ceilings or for wall mounting due to its flat design (495 × 495 × 108 mm). Screws for wall mounting are included. A set of steel cables for ceiling mounting is available separately. The subwoofer has four long excursion drivers (4-inch) and four passive radiators. Its nominal power rating is 200 watts at a nominal impedance of 2 × 4 ohms or 1 × 8 ohms. Operation is possible with one or two amplifier channels. The corresponding amplifier with the correct speaker preset is required for operation. The lower cut-off frequency is 45 Hz. The subwoofer is made of multiplex birch wood and weighs 10.5 kg. Optionally, it can be ordered in special colours from the RAL Classic, NCS or Pantone catalogues. Technical data Electroacoustic features acoustic design Subwoofer, passive components 4 × 4" long excursion woofer, 4 × passive radiator power rating (nominal)[1] 200 W cut-off frequency[2] 45 Hz nominal impedance 2 × 4 ohms or 1 × 8 ohms maximum SPL[3] 112 dB Physical features connectors 2 × 2-pin Phoenix terminal enclosure multiplex birch plywood mounting points 4 × keyhole mounting point standard colours black or white dimensions (W × H × D) 495 × 495 × 108 mm weight[4] 10.5 kg Optional features optional colours RAL Classic, Pantone, NCS, Texture Design [1] according to IEC-60268-5 (long term/short term) [2] -10 dB under anechoic halfspace-conditions with speaker preset [3] peak, 20 ms with bandpass filtered pink noise signal according to IEC 60268-2 at one octave above the [4] net weight without optional equipment Manufacturer: Fohhn Audio AG Model: IGS-4