OHM 15″ Full range cabinet LM 15LM 15 LM 15 passive cabinet is designed with a 700 W, 15 woofer and 3 compression driver capable of 132 dB SPL, in a compact lightweight enclosure. frequency response of 55 Hz 20kHz. The rear cast aluminium connection plate has two 4 pin speakON connectors fitted as standard, one input and one link. The speakON connectors are wired on pins +1 1, with pass through of pins +2 2.