User manual MACKIE PA121 DATASHEET

[. . . ] 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). The benefit is delay reduction, reduced phase shift and superior transient response. [. . . ] Listed sound pressure represents an average from 300Hz to 3kHz. RMS using 20Hz to 20kHz, PN Spectrum, Peak for 2 hours with +6 dB crest factor. 3 Recommended Amplifier is a power capability value that should be taken as a guide. 2 2 O FoF66 PAGES S PAGE PA121 Two-Way Speaker System PA121 Vertical Polars 200Hz 0° 250Hz 315Hz 400Hz 0° 500Hz 630Hz 800Hz 1kHz 1. 25kHz 1. 6kHz 2kHz 2. 5kHz 0° 3. 15kHz 4kHz 5kHz 6. 3kHz Vertical Off-Axis Frequency Response (UP) 8kHz 10kHz 0° 12. 5kHz 16kHz Vertical Off-Axis Frequency Response (DOWN) 3 O FoF66 PAGES S PAGE PA121 Horizontal Polars 200Hz 250Hz 315Hz 400Hz 500Hz 630Hz 800Hz 1kHz 1. 25kHz 1. 6kHz 2kHz 2. 5kHz 3. 15kHz 4kHz 5kHz 6. 3kHz Horizontal Off-Axis Frequency Reponse 8kHz 10kHz 12. 5kHz 16kHz 4 O FoF66 PAGES S PAGE PA121 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 8. 36" (212. 4mm) 2. 68" (68mm) 12. 59" (320mm) 14. 19" (360. 6mm) 7. 71" (195. 9mm) 5. 89" (149. 7mm) 13° 15. 35" (390mm) 12. 65" (321. 4mm) 15° 9. 44" (239. 8mm) 19. 75" (501mm) 12. 48" (317mm) 2. 68" (68mm) 8. 19" (208. 2mm) 2. 68" (68mm) 8. 74" (222. 2mm) TOP 15. 12" (384mm) SIDE 2. 68" (68mm) 15. 51" (394mm) 25. 00" (637mm) 19. 75" (501mm) PA 121 VISION SERIES IN-OUT IN-OUT 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 , , 4. 33" (110mm) +1/-1 LF +1/-1 HF +2/-2 CAUTION: SUSPENDING THIS SYSTEM SHOULD BE DONE BY QUALIFIED TECHNICIANS FOLLOWING APPROPRIATE SAFETY STANDARDS 5. 23" (133mm) 2. 68" (68mm) FULL RANGE 300W-8 SERIAL NUMBER MANUFACTURING DATE BI­AMP HF 30W-8 LF 250W-8 FRONT REAR 5 O FoF66 PAGES S PAGE SPEAKER PA121 Two-Way Speaker System Architects' and Engineers' Specifications The two-way loudspeaker system shall be self-contained and consist of the following components: (1) a 12-inch, lowfrequency driver; (2) a high-frequency section consisting of a constant directivity horn and compression driver; (3) a twoway crossover network; (4) a vented enclosure. The low-frequency transducer shall be a cone type loudspeaker having a cone diameter of at least 12 inches (300mm). It shall have a voice coil of at least 3 inches (76mm) in diameter. Sensitivity shall be at least 99dB when measured at 1m with an input of 1 Watt and have a power rating of at least 250 Watts (AES), 1000 Watts peak. The high-frequency section shall have a compression driver with a diaphragm of at least 1. 75 inches (44mm) in diameter. It shall present a constant impedance load of 8. It shall be connected to a constant directivity horn having a throat diameter of at least 1 inch (25mm) and a nominal coverage pattern of 90° horizontal by 70° vertical. Sensitivity shall be at least 107dB when measured at 1m with an input of 1 Watt and the power rating shall be at least 35 Watts (AES), 140 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 2kHz. The low-pass section of the network shall have minimum inductance in series with the low frequency driver. The high-pass section of the network shall be equalized to optimize the performance of the constant directivity horn. A dynamic high-frequency protection circuit based on a low-value, low-mass filament resistor shall limit the current available to the compression driver. A connection option shall be provided to disconnect the crossover network, but not the high-frequency protection circuit, from the drivers 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. [. . . ]