User manual MACKIE PA180SW DATASHEET

[. . . ] I The subwoofer system includes a high-level crossover network that features markedly lower (than conventional) induction values in series with the woofer. We call this innovation LICC (Low Impedance Compensated Crossover). The benefit is delay reduction, reduced phase shift and superior transient response. [. . . ] (52kg) Options PA-A1 1 Forged shoulder M10 eyebolt hardware 2 Measured on axis in the far field with 1 watt (2. 83V RMS, 8) input and referenced to 1 meter distance using the inverse square law. Listed sound pressure represents an average from 50Hz to 150Hz. Recommended Amplifier is a power capability value that should be taken as a guide. 2 O FoF46 PAGES S PAGE PA180SW High Efficiency Subwoofer Speaker System Frequency response is measured on-axis at a distance referenced back to 1m at 1-watt drive. Shown as half-space (2) enviroment. 23. 74" (603mm) 4. 64" (118mm) 29. 98" (761. 5mm) 19. 09" (485mm) 2. 68" (68mm) 7. 87" (200mm) 4. 64" (118mm) 23. 74" (603mm) 21. 06" (535mm) 16. 41" (417mm) 13° 15. 59" (396mm) 18. 11" (460mm) 2. 68" (68mm) 25. 98" (660mm) 12. 91" (328mm) 10. 82" (275mm) 2. 68" (68mm) TOP SIDE 31. 34" (796mm) 2. 68" (68mm) 6. 29" (160mm) 12. 36" (314mm) PA 180SW CROSSOVER­IN 23. 50" (596mm) 18. 11" (460mm) IN-OUT VISION SERIES IN-OUT CROSSOVER­OUT HI­PASS FILTER +1/-1 4. 33" (110mm) CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE INDUSTRIAL · MADE IN ITALY · COPYRIGHT ©1999 THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC. : "MACKIE" "MACKIE INDUSTRIAL" & THE "RUNNING MAN" FIGURE , , +1/-1 +1/-1 CAUTION: SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS CROSSOVER ON SERIAL NUMBER MANUFACTURING DATE CROSSOVER OFF 600W-8 2. 68" (68mm) 600W-8 FRONT REAR 3 O FoF46 PAGES S PAGE SPEAKER PA180SW High Efficiency Subwoofer Speaker System Architects' and Engineers' Specifications The subwoofer loudspeaker system shall be self-contained and consist of the following components: (1) an 18inch, low-frequency driver; (2) a low-pass filter; (3) a vented, horn loaded enclosure. The low-frequency transducer shall be a cone type loudspeaker having a cone diameter of at least 18 inches (460mm). It shall have a voice coil of at least 4 inches (100mm) in diameter. It shall present a nominal impedance load of 8. Sensitivity shall be at least 100dB when measured at 1m with an input of 1 Watt and have a power rating of at least 500 Watts (AES), 2000 Watts Peak. The system shall be crossed over by an internal, highlevel, passive network having a response of 12dB/octave. The nominal crossover frequency shall be 120Hz. The lowpass section of the network shall have minimum inductance in series with the low-frequency driver. The high-pass section of the network shall roll-off signals below 120Hz at 12dB/octave. This high-pass signal shall be made available to drive a full range loudspeaker system. A dynamic low-frequency protection circuit shall limit the current available to the driver. The crossover network shall present a constant 8 load impedance to the power amplifier. A jumper shall be provided to disconnect the crossover network from the driver to allow bi-amp operation. [. . . ] New material, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current Mackie Industrial product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated. and are registered trademarks of Mackie Designs Inc. [. . . ]