With its 51 mm (2,0 in.) maximum depth Hertz DCX 170.3 car audio coaxial, is a “flat” model optimized for installation in a vehicle’s door and/or other reduced spaces, without giving up on acoustic reproduction quality. A Neodymium magnet, PEI dome tweeter, built-in crossover, TPU (Thermoplastic polyurethane) surround, a copper voice coil wound on a Conex former and painstaking care in its build ensures performance surpassing other components within the same category. Features: 1: 2-way car speakers (pair)2: 6-3/4″ treated paper woofer with polyurethane surround3: 5/8″ PEI dome tweeter -TECHNICAL SPECIFICATIONS- Component Two way coaxial Size 170mm (6.7in) Power Handling - Continuous 50W Power Handling - Peak 100W Impedance 4 Ohm Depth 51mm (2.0in) Woofer Voice Coil Ø 25mm (1.0in) Frequency Response 60 ÷ 21k Hz Woofer Magnet size D x d x h 80 x 32 x 10mm (3.1 x 1.3 x 0.4in) Weight of one speaker 0,56kg (1.23lb) Woofer Magnet High density flux ferrite Tweeter Magnet Neodymium Cone Water-repellent pressed paper Dome PEI D mm 133 Re Ohm 3,6 Fs Hz 85 Vas I 11,3 Mms g 8,8 Cms mm/N 0,4 BL T*m 3,7 Qts 0,95 Qes 1,21 Qms 4,39 Spl dB 93