TOA Electronics TU-630 | 30W 16 Ohm Driver Unit

TOA's TU Series Driver Units are designed to be used in combination with TOA's TH-650 or TH-660 round horn. The TH / TU combined speaker can be used for both indoor and outdoor applications, as well as for background music reproduction. The lineup includes four models rated at 30W (TU-630 and TU-630M) and 50W (TU-650 and TU-650M). The "M"-type models are designed for use in high-impedance (70V / 100V lines) systems and standard models for low impedance (16?) systems. This wide product lineup permits selection of the ideal speaker for most applications. TU Series driver units feature newly developed diaphragms employing special heat-resistant fibers impregnated with phenolic resin to prevent the diaphragm from absorbing moisture and changing shape. High speaker efficiency has also been realized by minimizing the gap produced when the diaphragm bobbin is installed in the magnetic circuitry slit. The aluminum foil bobbin also features excellent heat dissipation properties to resist high power inputs and ensure high speaker durability. High-impedance models are equipped with an input impedance selector switch which facilitates impedance settings without requiring disassembly. The switch is also equipped with an OFF position to prevent speaker damage resulting from incorrect impedance setting. TH Series horns have two types; 500mm and 600mm in diameter. Both types feature TOA's round shape to ensure high speech clarity and sound quality suitable for music reproduction. All external hardware (screws, bolts, nuts) are made of stainless steel, while the mounting bracket and the horn itself are treated with 50-micron thick powder paint coating which is about three times thicker than that of the conventional horns. All of these factors combine to ensure the speaker's excellent weatherproofing and corrosion resistance. In addition, the external horn flare is made of aluminum which is more shock resistant than resin.