The Revelator 18W series of drivers continue the enviable trend set by the smaller 15W range. There's a few different versions - they are all excellent.
This drive unit is available in 4 and 8 Ohm impedance.
Popular among high end & esoteric designers - and with very good reason.
Featuring unique sliced / damped cone technology & huge high efficiency ferrite magnets, these no compromise drive units offer superlative sound quality with outstanding midrange resolution and extension.
Patented Symmetrical Drive motor design
Die cast Aluminium Chassis vented below spider
Low-loss linear suspension
Sliced / Damped Cone (Controls Cone Breakups)
Low Damping SBR Rubber Surround
Undoped pulp cone
This woofer is 4 Ohms ; the 8 Ohm version is here : 18W/8531G00