HTH 8.7 8 OHM Professional CD-Horn (constant directivity) for the high-frequency range above 3000 Hz. The square shaped horn system is made of rugged black plastic and equipped with a 25 mm voice-coil for high power handling. The horn can therefore be used as an ideal highrange component for compact 2- and 3-way-speakers used as stage monitors or small P.A. for instruments and vocals.