Studio Monitors & Speakers
B&C 18TBX100 4 Ohm
B&C 18TBX100 4 Ohm, Bass Speaker, Size: 18", Power rating: 1200 W AES, 2400 W peak, Sensitivity: 97 dB 1W/1m, Frequency range: 35 - 1500 Hz, Impedance: 4 ohm, Weight: 13.0 kg
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/b-c-18tbx100-4-ohm-oid29446198979.html