EXC series The goal of the EXC series is to maintain the philosophy of SUPRAVOX, historically high-efficiency loudspeakers. With the EXC (Field-coil Loudspeaker) series, from 165 to 380 mm in diameter, the audiophile can satisfy his passion. The Supravox team, still in intense research activity, offers four evolutions of these classic references equipped with a powerful electromagnet. The moving assembly benefits from our new exponential cone, this one, by the formulation of its paper, offers better damping, a guarantee of clarity and definition, while ensuring, by its profile, greater rigidity offering reduced distortion in the low register. This brand new loudspeaker is a reference in high fidelity: bandwidth, linearity of response, clarity of sound, dynamic range, thermal and mechanical resistance, very low distortion. TECHNICAL CHARACTERISTICS Below are the 2021 parameters, measured using AES2-1984-r2003. A 12 volts Sensitivity (2.83V/1m): 96 dB Sensitivity (1W/1m): . Bandwidth : 30Hz-500KHz Impedance: 8 Oh Suspension : Linear excursion: +/- 7 mm Magnet : Magnetic field : Salad bowl: Aluminum HP diameter: 388mm Mounting hole distance: Enclosure drilling diameter: HP depth: HP weight: Fs : 31.0598 Hz Re : 5.5 Ohms L1 kHz : 1,1573 mH Qts : 0,3411 Question: 0,3642 Qms : 5,3709 You: 300.7729 L With : 17.2857 T.m Mms : 84.1842 g Sd : 9.079E-2 m²