Check the listing for details. MB Acoustics Neodymium 2" Titanium Compression Driver,4" VC,8 ohm, MB-DE1085-NEO. Condition: New. Listed at 189.50 USD. YOU ARE BUYING 1 TITANIUM COMPRESSION DRIVER The MB Acoustics MB-DE1085-NEO is a High Frequency Compression Driver with a 2" throat. It has a 4" (CCAR) Flat Wire Voice Coil on a High Heat resistant Kapton (KSV) former with a Titanium Diaphragm, matched to a 5.6" Neodymium magnet to achieve maximum SPL levels on a Bolt-On configuration. SPECIFICATIONS: Bolt-On Compression DriverExit Throat Diameter: 2"Voice Coil Size: 4"Voice Coil Specs: (CCAR) Flat Wire on a Kapton (KSV) former with a Titanium DiaphragmMagnet: 5.6" diameter Neodymium Frequency Response: 800Hz - 21kHzSensitivity: 109dB @ 1W/1mImpedance: 8 ohmPower: 3000W peak (280W continuous power)Driver Diameter: 5.6" (140mm)Driver Depth: 2.36" (60mm)Mounting Type: Bolt-OnDriver Weight: 6.2 LBSQuantity: 1 Compression DriverReplacement Diaphragm available (Sold separately) here: https://www.ebay.com/itm/235665222258