The ESB 9.3M is a pair of high-end cone midrange speakers from the 9000 series, designed to bring clarity and precision to automotive audio systems. These 75 mm drivers are built for versatility, fitting naturally into upper door panels, sail panels, A-pillars, or other custom installations. They handle a nominal power of 110 watts with a transient peak of 220 watts, operating at a 4 Ohm impedance to deliver a frequency response ranging from 130 Hz to 20 kHz with a sensitivity of 90.8 dB. Their construction focuses on rigidity and weight reduction, featuring a single-piece cone made from vacuum and autoclave molded high-modulus carbon without a dust cap. This is paired with a wide, lightweight Nomex voice coil with aluminum winding and a balanced Conex™ spider damper for stability. To ensure thermal efficiency and magnetic strength, the speakers utilize a large high-temperature resistant neodymium magnet and a pole plate CNC machined from solid ultra-low-carbon steel. The physical assembly is completed with a powder-coated die cast-aluminum basket and gold-plated soldering terminals for reliable connectivity. For acoustic refinement, the design incorporates TCA (Tuned Cavity Air) for aperiodic damping resistance and a magnetic flux analysis designed pole yoke, while an NBL rubber surround maintains the cone's integrity. For those seeking extra protection, a CNC-machined aluminum grille is available as an optional accessory.