Check the listing for details. JBL / Selenium - D220Ti - 1" - 8 ohm - Titanium Horn Screw On Driver. Condition: New. Listed at 79.99 USD. NEW ! JBL / Selenium DD220Ti 8 ohm Titanium Horn Screw On Driver.Diaphragm type dome in pure, rigid, light and extremely thin titanium (0.025 mm). To avoid stress and distortion, the suspension has a special design. Injected phase plug in engineering plastic, optimized to eliminate undesirable phase cancellations. Magnetic assembly that concentrates flux in the gap, optimized using FEA(Finite Element Analysis). Voice coil manufactured in CCAW (Copper Clad Aluminium Wire), Kapton former, assures great stability and thermal resistance. The moving assembly has a perfect auto-centering characteristic that turns replacement in an easy task. Model D220Ti uses standard 1 3/8" screw - 18 threads per inches, for better fitting with Selenium horns. General Specifications: D220Ti is compatible with any Selenium horn with model number ending in "25" Standard 1-3/8"-18 TPI screw-on mounting Impedance 8ohms Frequency response @-6 dB 1,000 to 21,000 Hz Throat diameter 1" Magnet weight 24oz (675g) Housing material Plastic Voice coil material Kapton®/CCAW Horn connection Screw-on - Standard 1-3/8"-18 TPI screw-on mounting Part # 264-270 Weight: 4 lbs. FREE SHIPPING ONLY In the Lower 48 States. Most Orders Placed Before 2PM and Paid thru' PayPal Are Shipped The Same Day; Monday to Friday.