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Ashly PQX-571 manual

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Table of contents for the manual

  • Page 1

    PQX-571 PQX-572 Parametric Equalizer Operating Manual ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 T oll-Free: (800) 828-6308 Fax: (716) 872-0739 Internet: http://www .ashly .com/[...]

  • Page 2

    Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 2 T abl e Of Contents 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 UNP ACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 AC[...]

  • Page 3

    3 Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 1. INTRODUCTION Congratulations on your purchase of an Ashly PQX series parametric equalizer . Like graphic equaliz- ers, parametric equalizers allow you to boost or cut se- lected frequencies. Unlike graphic equalizers however , parametric equalizers can tune in the exact frequencies yo[...]

  • Page 4

    Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 4 5.2 Parametric Filters (Filters No. 2-6) 1. Range Switch Each parametric filter has a normal center fre- quency range of 200Hz-20KHz. Depressing the range switch divides the center frequency by 10, providing a range of 20Hz-2KHz. 2. Level Control The band of frequencies selected by the f[...]

  • Page 5

    5 Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 5.3 High Shelving Filter (Filter No. 7) These concentric controls work the same way as the low shelf controls described in (1) and (2) except the filter response starts at the center frequency selected and continues up in frequency . 5.4 Master Level The overall gain of the equalizer is [...]

  • Page 6

    Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 6 Mixer PQX 571 Parametric Equalizer Cr ossover Power Amplifier Compr essor - Limiter T ypical Sound System Design 6. TYPICAL APPLICA TIONS 6.1 Connecting Into a Sound System T ypically an equalizer is used in a sound system which has a mixer or some other sort of preamplifier . In such ca[...]

  • Page 7

    7 Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 2. W ith the entire P A hooked up and turned on, slowly increase the sound level at the mixer un- til feedback is heard, then lower the level by about 3 dB so that feedback does not continue. 3. Start with one of the PQX filters by setting the level at 0, bandwidth set fairly sharp (abou[...]

  • Page 8

    Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 8 8. TROUBLESHOOTING TIPS 8.1 No Output Check AC power - is the Power LED on? Check in/out connections -are they reversed? Are you sure you have an input signal? 8.2 Eq Controls Do Nothing Is the master EQ in/out switch in? Maybe the bandwidth setting is too sharp to produce an audible cha[...]

  • Page 9

    9 Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 10. SPECIFICA TIONS (0 dBu = 0.775 volts rms, Balanced input) 10.1 Master Gain Level: ± 15dB 10.2 Peak Filter Amplitude: ± 15dB 10.3 Peak Filter F requency Range Range Switch Out 200Hz - 20KHz Range Switch In: 20Hz - 2KHz 10.4 Peak Filter Bandwidth: 3 1/3 - 1/20 octave 10.5 Shelving Fi[...]

  • Page 10

    Operating Manual - PQX 571 and PQX 572 Parametric Equalizer 10 PQX 571, PQX 572 Schematic Diagram 1 of 2 12. SCHEMA TICS[...]

  • Page 11

    11 Operating Manual - PQX 571 and PQX 572 Parametric Equalizer PQX 571, PQX 572 Schematic Diagram 2 of 2[...]

  • Page 12

    Printed in USA 5/97 PQX Rev 2 Operating Manual - PQX 571 and PQX 572 Parametric Equalizer ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 T oll Free (800) 828-6308 Internet: http://www .ashly .com/  1997 by Ashly Audio Corporation. All rights reser ved worldwide.[...]