With the Revelator family you will find everything you need when it comes to High-End audio transducers, no matter whether your need is for a small 2-way system or a giant multi-way loudspeaker. The Revelator family has it all with the best performance and quality available. Products in the Revelator family have for many years been the industry standard setting the bar for others to match and still hold that position today! D2104/712000 21 mm Dome Tweeter4 ohm, Large Ring Neo, Black Faceplate - Patented Symmetrical Drive (SD-2) motor - High frequency extension beyond 40kHz - Back chamber with high consistency felt pads - Neo ring magnet system w. double vent. - Coated textile diaphragm w. large roll Surround - Anodized Machined Alu Face Plate