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Art Model 442 manual

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Table of contents for the manual

  • Page 1

    442 EQ DUAL CHANNEL 15 BAND 2/3 OCTAVE GRAPHIC EQUALIZER 452 EQ SINGLE CHANNEL 31 BAND 1/3 OCTAVE GRAPHIC EQUALIZER USER’S GUIDE[...]

  • Page 2

    2 EQUALIZER OVERVIEW – FEATUR ES AND GENERAL INFORMATION: MODEL 442 TWO CHANNEL 15 BAND 2/3 OC TAVE PRECISION GRAPHIC EQUALIZER The Model 442 features constant Q circuitry with a 3% center frequ ency accuracy. Special features include 60MM full range prec ision Sliders, LED metering, sele ctable range 6dB or 12dB, active balanced and unbalanced i[...]

  • Page 3

    3 Balanced output requires using Pin 2 of the XLR or the tip of the 1/ 4” TRS as output Hi (+) and using pin 3 of the XLR or the ring of t he 1/4” TRS as Lo (-). It does no t require pin 1 or signal ground. The signal exists differentially between the two balanc ed leads. Ground is used only for shielding to prevent potential hum. Paralleling i[...]

  • Page 4

    4 Here are some tips to help you with the initial set up: 1. Set channel levels to the center detent 0dB on the front panel. 2. Bypass the equalizer (Note: Select the bypass switch and press - the red LED is on.) 3. Set the frequency slide contro ls to the center detent or 0dB. 4. Select the 6dB range switch (green LED on). 5. Apply signal to the s[...]

  • Page 5

    5 2. FILTER LEVEL CONTROLS Each of these sliders controls t he output level of each of the 31 (o r 15) bandpass filters. The center detent position is grounded to assure flat response. 3. FILTER RANGE SWITCH & INDICATORS The gain range of the filter sliders is switchable (as a group) from +/- 6dB to + /-12dB for maximum boost/cut capability. At[...]

  • Page 6

    6 8. LEVEL CONTROL This controls the level of signal coming into t he equalizer. Turn this cont rol down if the Clip LED illuminates steadily (meaning too st rong an input signal). Unity gain can be set by turning this knob to its center detent position. 9. LED Metering Each channel of the equalizer has an LED array mete r, showing its output level[...]

  • Page 7

    7 nel. CAUTION: After checki ng the AC supply voltage, be sure that the correct fuse is in the fuse holder; 0.6Amp for 100-103V AC, as well for 220-240VAC. 12. AC VOLTAGE SELECTOR Set this slide switch to match your line voltage supply. CAUTION: For new installations and portable sound systems, or any situation in which the mains pow er is suspect,[...]

  • Page 8

    8 FOR UNBALANCED CONNECTIONS Use 1/4 inch tip-ring-sleeve or mono phone plug c onnectors or RCA phone jack connectors wired as follows: Phone Jack : Connection : tip = high ring = no connection sleeve = ground APPLICATIONS Graphic equalizers may be used wherever modification of the frequency contour of a sound system is needed. A graphic equalizer [...]

  • Page 9

    9 WARRANTY INFORMATION Limited Warranty Applied Research and Technology will provide warranty and service for this unit in accordance with the following warrants: Applied Research and Technology (A R T) warrants to the origin al purchaser that this product and the components thereof will be fr ee from defects in workmanship and materials for a pe- [...]

  • Page 10

    10 SERVICE The following information is provided in the unlik ely event that your unit requires service. 1) Be sure that the unit is the cause of the problem. Check to make su re the unit has power supplied, all cables are connecte d correctly, and the cables them selves are in working condi- tion. 2) If you find the unit to be at fault, write dow [...]

  • Page 11

    11 SPECIFICATIONS EQUALIZER Bands 1*31, 1/3 Octave ISO Spacing From 20Hz to 20kHz. (model 452) 2*15, 2/3 Octave ISO Spacing Fr om 25Hz to 16kHz. (model 442) Type Constant Q Accuracy 3% Center Frequency Travel 60mm (Oil Dampened, Positive Cent er Detent) for 1*31, 2*15 Range +/- 6dB or +/- 12dB (Selectable) INPUTS Type Active Balanced/Unbalanced Con[...]

  • Page 12

    12 APPLIED RESEARCH & TECHNOLOGY 215 TREMONT STREET ROCHESTER, NEW YORK 14608 USA (585) 436-2720 – Voice (585) 436-3942 – Fax http://www.artproaudio.com E-mail: cserve@artproaudio.com 442 EQ DUAL CHANNEL 15 BAND 2/3 OCTAVE GRAPHIC EQUALIZER 452 EQ SINGLE CHANNEL 31 BAND 1/3 OCTAVE GRAPHIC EQUALIZER 442-5004-100[...]