Description

Historic British 18-inch bass driver, often listed under the designation T4447. The version was manufactured by Celestion as an OEM component specifically for classic PA systems from Martin Audio. Technical specifications and typical use Application: The woofer was used predominantly in well-known horn-loaded bass enclosures. These include, among others, subwoofers from the Martin Audio F1 series and older “S-Bins”. Selected Thiele-Small data: Diameter (D): 380 mm, corresponding to an effective size of 18 inches Force factor (Bl): 23.59 Tm Resonance frequency (Fs): 35.5 Hz DC resistance (Re): 5.61 Ohm; designed for a nominal impedance of 8 Ohm Power handling: 600 Watt

Specifications