User manual MACKIE PACX81 DATASHEET

[. . . ] I The coaxial speaker consists of an 8" high-output carbon fiber woofer with a 2" voice coil, combined with a back-mounted titanium dome high frequency transducer suitable for difficult climatic environments. I The 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). [. . . ] RMS using 20Hz to 20kHz, PN Spectrum, Peak for 2 hours with +6dB crest factor. 3 Recommended Amplifier is a power capability value that should be taken as a guide. 2 2 O FoF66 PAGES S PAGE PACX81 Coaxial, Two-Way Speaker System PACX81 Vertical Polars 200Hz 0° 250Hz 315Hz 400Hz 0° 500Hz 630Hz 800Hz 1kHz 1. 25kHz 0° 1. 6kHz 2kHz 2. 5kHz 0° 3. 15kHz 4kHz 5kHz 6. 3kHz Vertical Off-Axis Frequency Response Graph (UP) 8kHz 0° 10kHz 12. 5kHz 16kHz Vertical Off-Axis Frequency Response Graph (DOWN) 3 O FoF66 PAGES S PAGE PACX81 HorizontalPolars 0° 0° 200Hz 250Hz 315Hz 400Hz 500Hz 630Hz 800Hz 1kHz 0° 0° 1. 25kHz 1. 6kHz 2kHz 2. 5kHz 3. 15kHz 4kHz 5kHz 6. 3kHz 0° Horizontal Off-Axis Frequency Reponse 8kHz 10kHz 12. 5kHz 16kHz 4 O FoF66 PAGES S PAGE PACX81 Coaxial, Two-Way Speaker System Frequency response is measured on-axis at a distance referenced back to 1m at 1-watt drive. Shown as a half space (2) enviroment. Beamwidth vs. Frequency Directivity Index 11. 81" (300mm) 3. 74" (95mm) 10. 63" (270mm) 3. 15" (80mm) 15° 15° 45° 4. 92" (125mm) BOTTOM TOP 2. 76" (70mm) IN-OUT 1. 46" (37mm) 5. 0" (127mm) PACX81 VISION SERIES 15. 00" (381mm) 6. 38" (162mm) 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 IN-OUT CAUTION: SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS +1/­1FULL RANGE 160W-8 SERIAL NUMBER MANUFACTURING DATE 11. 81" (300mm) 4. 41" (112mm) FRONT REAR 5 O FoF66 PAGES S PAGE SPEAKER PACX81 Coaxial, Two-Way Speaker System Architects' and Engineers' Specifications The two-way loudspeaker system shall be self-contained and consist of the following components: (1) an 8 inch, twoway coaxial loudspeaker; (2) a two-way crossover network; (3) a vented enclosure. The low-frequency section of the transducer shall be a cone type loudspeaker having a cone diameter of at least 8 inches (200mm). It shall have a voice coil of at least 2 inches (50mm) in diameter. It shall present a nominal impedance load of 8. The high-frequency section of the transducer shall be a dome tweeter. It shall have a titanium voice coil of at least 1 inch (25mm) in diameter. It shall present a constant-impedance load of 8. The system shall be crossed over by an internal, highlevel, passive network having a response of 12dB/octave. The nominal crossover frequency shall be 1. 3kHz. The lowpass section of the network shall have minimum inductance in series with the low frequency driver component. A dynamic high-frequency protection circuit based on a low-value, low mass filament resistor shall limit the current available to the high-frequency driver component. A switch shall be provided to disconnect the crossover network, but not the high-frequency protection circuit, from the drivers to allow bi-amp operation. The enclosure shall be a vented design with an internal volume of at least 0. 53 cu. [. . . ] 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. [. . . ]