User manual MACKIE ART300A DATASHEET

[. . . ] The CD horn is a part of the molded enclosure. Two discrete power amplifiers and an electronic crossover are matched to the two transducers and provide time correction, CD horn compensation and peak-limiting, as well as overexcursion and thermal protection. The ART300A will accept a balanced or unbalanced (switch selected) microphone or line input, adjusted by a single rotary control. [. . . ] 2 RMS using 20Hz to 20kHz, PN Spectrum, Peak for 2 hours with +6 dB crest factor. 1 2 OF 6 PAGES ART300A Two-Way Active Speaker System ART300A 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 (UP) 8kHz 0° 10kHz 12. 5kHz 16kHz Vertical Off-Axis Frequency Response (DOWN) 3 OF 6 PAGES ART300A Two-Way Active Speaker System ART300A Horizontal Polars 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 Response 8kHz 10kHz 12. 5kHz 16kHz 4 OF 6 PAGES ART300A Two-Way Active 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) environment. Beamwidth vs. Frequency Directivity Index 12. 29" (312mm) 8. 35" (212mm) 14. 22" (361mm) 14. 18" (360mm) 7. 44" (189mm) VOLUME 3. 58" (91mm) 10. 20" (259mm) OPERATE LIMIT. MUSIC 7. 36" (187mm) 12. 29" (312mm) VOICE LINE/MIC OUTPUT BOTTOM SIDE INPUT 15. 36" (390mm) 15. 36" (390mm) 6. 69" (170mm) 8. 67" (220. 0mm) 16. 98" (431mm) 24. 42" (620mm) 22. 25" (565. 2mm) 6. 25" (158. 7mm) 5. 25" (133. 4mm) 9. 50" (241. 3mm) FRONT REAR 5 OF 6 PAGES ART300A SPEAKER ART300A Two-Way Active Speaker System Architects' & Engineers' Specifications The amplified loudspeaker system shall be a selfcontained unit, housed in a reinforced polypropylene enclosure and consisting of the following sub-systems: (1) vented two-way loudspeaker system, (2) integrated power amplifiers and crossover network, (3) integrated mic/line input with music and voice equalizers. The loudspeakers shall consist of a 12 inch lowfrequency, cone driver, and a 90° x 70° high-frequency, constant-directivity polynomial horn with a horn-loaded, 1 inch compression driver. The drivers shall be aligned with an analog circuit and crossed over at 1. 8kHz by a 4-pole network built into the power amplifiers. Together they shall be capable of producing 126dB SPL (1m, anechoic). Two discrete amplifiers shall be provided, capable of continuously delivering 300W RMS to the lowfrequency driver and 60W RMS to the high-frequency driver. Distortion shall be less than 0. 1% when measured at 1kHz and 10kHz. They shall be equipped with a multi-function protection circuit to peak limit and protect the loudspeakers from overheating, over-excursion, short circuits and extreme operating temperatures. An indicator light shall illuminate when any aspect of the protection circuit engages. The integrated mic/line input shall be actively balanced, may accept an unbalanced input, and shall be paralleled to an output. The input shall have a switch to select between 10mV mic and 775mV line levels. The unit shall be provided with both voice and music optimization equalization that can be activated with buttons on the rear panel. The voice equalizer shall provide +4dB at 3kHz and +4dB at 6kHz. The music equalizer shall provide +4. 5dB at 65Hz and +4dB at 12kHz. A continuously variable, rotary master volume control shall be provided. [. . . ] 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. [. . . ]