Mackie HD1521 Owner's Manual - Page 12

HD1521 Appendix C: Technical Information HD1521 Specifications Acoustic Performance: Frequency Response (-10 dB) Frequency Response (-3 dB) Horizontal Coverage (-6 dB) Vertical Coverage (-6 dB) Directivity Index (dB) Directivity Factor (Q) Max peak SPL (calculated) Max peak SPL (measured) Crossover Point Equalization Contour EQ Low Shelving Mid-Peaking High Shelving 40 Hz-20 kHz 50 Hz-18 kHz 80 degrees averaged 2 kHz to 10 kHz 50 degrees averaged 2 kHz to 10 kHz 11.4 averaged 2 kHz to 10 kHz 14.0 averaged 2 kHz to 10 kHz 135 dB 125 dB 1200 Hz Power Amplifiers Low Frequency Power Amplifier Rated Power Rated THD Design High Frequency Power Amplifier Rated Power Rated THD Design Input/Output Input Type Input Impedance Loop Out -3 dB to +3 dB 80 Hz, 6 dB / octave -3 dB to +3 dB 100 Hz to 8 kHz, Q=1.5 -3 dB to +3 dB 12 kHz, 6 dB / octave Line Input Power US model Recommended Service European model Recommended Service AC Connector 700 watts rms 1400 watts peak < 0.03% Class D 100 watts rms 200 watts peak < 0.03% Class D Female XLR balanced 11 kohm balanced Male XLR balanced 120 VAC, 60 Hz 9 amps 230 VAC, 50 Hz 5 amps 3-pin IEC 250 VAC High-Frequency Section Voice Coil Diameter Horn Entry Diameter Diaphragm Material Magnet Material 1.75" / 44.5 mm 1.0" / 25 mm Heat-treated titanium Ferrite Safety Features Input Protection: Display LEDs: RMS limiting, power supply and amplifier thermal protection Power ON, EQ ON, Sig/Limit, Thermal protection, Front Power ON Low-Frequency Section Woofer Diameter Voice Coil Diameter Diaphragm Material Magnet Material 15.0" / 381 mm 3.0" / 76.2 mm Paper Neodymium  Calculated from driver sensitivity and amplifier power.  Measured with pink noise, free field at 1 meter, before limiting. Construction Features Basic Design Trapezoidal, 20 degree included angle Cabinet 15 mm exterior grade premium birch plywood Finish High durability black paint Handles One on each side Grille Powder-coated galvanized steel Fly Points Twelve M10 x 1.5 mm 12 HD1521