Compression driver 90W 16Ω AU-60 Weatherproof and sturdy construction. High SPL, crisp and penetrating sound. Precision wound voice coils on an aluminum coil for efficient heat dissipation. IP66 rated, when fitted to a reflex horn, against foreign particles such as dust and water jets, therefore making them ideal for outdoor use. Complies with EN 60529. Brand: Ahuja Model: AU-60 Characteristics Power 60W Rms/90W Max. Impedance 16Ω Frequency response 160-7,000Hz SPL at 1kHz 113.5dB/1W/1m, 132dB/60W/1m Temperature range  -30°to + 70°C Throat coupling 1-3/8” - 18TPI, Throat Couple No.1 Dimensions ø125 x H100mm Weight 2.05kg Material Acoustic head in die-cast aluminum (flange)