Two-way line-source speaker. It is a vented 'arrayable bass cabinet' having the same frontal size of two RA16 loudspeakers and with integrated steel suspension fittings that are compatible with model B1 and B2 bumpers and with the RA16' fittings. The combination of RA18 and RA16 allows to project and install compact and efficient audio systems able to reproduce the complete audio spectrum even when you can't or don't want to use floor-standing subwoofers. Features frequency response of 50 Hz - 100 Hz, maximum SPL 130 dB and the power of 1700 W at 4 ohm. Dimensions: 53 x 54 x 55 cm. Weight: 34 kg.