ESB Audio - 9000 Series - 9.UMA 2-Way High-End Mid-High Unit
Main Features-
The damping material controls the tweeter air flow and creates aperiodic resistance.- Large neodymium magnet. This high-temperature resistant neodymium magnet is one of the most powerful, and the special design ensures that the lines of force are focused right where they’re needed without any leakage.- Felt damper for controlling and reducing the tweeter dome’s resonance.- Wide 25 mm lightweight aluminum voice coil with aluminum copper clad winding contributes significantly to the large bandwidth extension of this tweeter.- Silk dome impregnated with resin with integrated suspension. Made in a single piece, this greatly reduces weight, allowing the tweeter to reproduce very high frequencies. The absence of joints also prevents break-up and/or vibration phenomena.- CNC-machined billet aluminum flange allows the midrange and tweeter to be mounted using screws so the two speakers can be replaced if need be.- Integrated terminal connector located between the midrange and tweeter, made of pure gold-plated copper, accepts large gauge cables, and which are secured using allen screws.- TCA, to control the flow of air moved by the midrange cone, creating aperiodic damping resistance that ensures the release of energy accumulated in the movement of the speaker occurs in a controlled and fast manner, without creating persistent oscillations.- Die cast-aluminum and powder-coated basket (midrange) offers very low resistance to the passage of air, and its shape (verified by FEM analysis) reduces vibration and resonance.- Wide, lightweight Nomex voice coil with aluminum winding contributes significantly to the wide bandwidth extension of the midrange.- Large balanced Conex™ spider damper device ensures linear excursion in both directions thereby reducing distortion.- Collar for joint voice coil and cone. This distributes the pressure on the cone over a large area for reduced deformation and distortion.- The cone is made with vacuum and autoclave molded high-modulus carbon, a technology rarely used in loudspeakers because of its cost, but it brings enormous benefits in terms of naturalness of reproduction and high dynamics at transients. This is made in a single piece without a dust cap, offering incredible advantages in dispersion and regularity of frequency response at the high end.- The NBL rubber surround has a shape designed to ensure very smooth movement at very low excursion, becoming increasingly controlled as the excursion increases and approaches the limit. This, too, helps to make this speaker extremely dynamic and capable of handling high powers.- CNC-machined aluminum grille.
Technical Specifications- Nominal Impedance: 4 Ohm- Nominal Power Handling: 110 Watt- Transient Power: 220 Watt- Frequency Response: 130 Hz ~ 25 KHz- Sensitivity: 91.5 (tw) 91.5 (mid) dB 2.83v/1m