Studio Monitors & Speakers
B&C 18SW115 4 Ohm
B&C 18SW115 4 Ohm, 18" Bass Speaker, Magnet material: Neodymium, Power: 1700 W AES, 3400 W peak, Frequency range: 35 - 1,500 Hz, Impedance: 4 Ohm, Sensitivity: 96 dB 1 W/1 m, Weight: 11.7 kg
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/b-c-18sw115-4-ohm-oid37185454650.html