dbx 30 Series Operation Manual
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dbx 30 Series Operation Manual

Graphic equalizers
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30 SERIES
G R A P H I C
E Q U A L I Z E R S
®
O
M
PERATION
ANUAL

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Summary of Contents for dbx 30 Series

  • Page 1 30 SERIES G R A P H I C E Q U A L I Z E R S ® PERATION ANUAL...
  • Page 2 . m a n u a l . All trademarks are property of their respective companies. This manual is part number 18-0521-A © Copyright 1995 by dbx Professional Products dbx Professional Products 8760 South Sandy Parkway ®...

  • Page 3: Table Of Contents

    MANUAL CONTENTS 30 SERIES GRAPHIC EQs ANUAL ONTENTS ..........2 NTRODUCTION .

  • Page 4: Introduction

    We recommend you take a moment to read through this Operation Manual. It provides information that will assist you from system set-up to EQ applications. The 30 Series features include: 31 ISO standard center 1/3 octave constant Q frequency bands per channel (or 15 ISO standard...

  • Page 5: Inspection

    ARRANTY This warranty is valid only for the original purchaser and only in the United States. We warrant dbx prod- ucts against defects in material or workmanship for a period of two years from the date of original pur- chase for use, and agree to repair or, at our option, replace any defective item, except external power transformers, without charge for either parts or labor.

  • Page 6: Operating Controls

    OPERATING CONTROLS ® PROFESSIONAL PRODUCTS PERATING ONTROLS dbx 3031 3031 12 dB RANGE 6 dB GAIN 1 / 3 O C T A V E GRAPHIC EQ HI CUT Headroom (dB) LO CUT Power LO CUT 31.5 1.25K 1.6K 2.5K 3.15K 6.3K...
  • Page 7 OPERATING CONTROLS 30 SERIES GRAPHIC EQs Turns the equalizer's power ON or OFF. Power ON is indicated by the lighted power OWER WITCH LED. LED: Lights to indicate that the equalizer is turned on. OWER EQ I This switch removes the equalizer's input gain and individual slider controls from the signal path.

  • Page 8: Connecting The Eq

    ® PROFESSIONAL PRODUCTS ONNECTING THE TO THE YSTEM The 30 Series equalizers have balanced inputs and outputs that can be used with any line-level device. For more specific information about cabling possibilities, please refer to I NSTALLATION ONSIDERATIONS (pg. 9).

  • Page 9: Rear Paneld

    REAR PANEL DESCRIPTIONS 30 SERIES GRAPHIC EQs ANEL ESCRIPTIONS dbx 3031 ® C A U T I O N C A U T I O N : T O R E D U C E T H E R I S K O F F I R E R E P L A C E...
  • Page 10 REAR PANEL DESCRIPTIONS ® PROFESSIONAL PRODUCTS Connects A.C. power to the equalizer. OWER ECEPTACLE Three types of input connectors are provided for input connections: female NPUT ONNECTORS locking XLR type connectors, 1/4-inch tip-ring-sleeve phone jack connectors, and a barrier strip. The maximum input level that the equalizer can accept is +22dBu (ref: 0.775Vms).

  • Page 11: Onsiderations

    ABLE ONFIGURATIONS unbalanced. This makes the 30 Series equalizers audio inputs suitable for use with virtually any source impedance, low or high. Note that XLR pins 2 and 3 are reversed on some products that you may be using with the equalizer.
  • Page 12 INSTALLATION CONSIDERATIONS ® PROFESSIONAL PRODUCTS The following cable wiring diagrams may to assist you with input and output connections for both bal- anced and unbalanced connectors. FROM SOURCE DEVICE TO NEXT DEVICE FROM SOURCE DEVICE TO NEXT DEVICE SLEEVE SLEEVE RING RING XLR-TYPE FEMALE...
  • Page 13 There is an optional Input and/or Output Transformer kit available for the 30 Series equalizers which may be installed for special applications. Contact your dealer or contractor for more information...

  • Page 14: Pplication Otes

    PPLICATION OTES The dbx graphic equalizers are useful audio signal processing tools in situations where precise frequency control is required across the audible frequency spectrum. When used with an audio spectrum analyzer the EQs can tune any acoustical environment - from the stu- dio to the concert hall- to stop ringing, increase clarity, and flatten the overall frequency response of the environment.

  • Page 15: Factory Service

    ACTORY ERVICE The dbx EQs are all-solid-state product with components chosen for high performance and excellent reli- ability. Each has been tested and burned in at the factory. No adjustment of any type should be required throughout the life of the unit.

  • Page 16: Specifications

    SPECIFICATIONS ® PROFESSIONAL PRODUCTS PECIFICATIONS 3031: Electronically Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) NPUT 75k½ balanced, 50k½ unbalanced MPEDANCE +22 dBu (ref: 0.775Vms) EVEL CMRR >85dB at 1kHz Servo Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) UTPUT 100½...
  • Page 17 SPECIFICATIONS 30 SERIES GRAPHIC EQs 3031C: Electronically Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) NPUT 75k½ balanced, 50k½ unbalanced MPEDANCE +22 dBu (ref: 0.775Vms) EVEL CMRR >85dB at 1kHz Servo Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) UTPUT 100½...
  • Page 18 SPECIFICATIONS ® PROFESSIONAL PRODUCTS 3231L: Electronically Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) NPUTS 75k½ balanced, 50k½ unbalanced MPEDANCE +22 dBu (ref: 0.775Vms) EVEL CMRR >85dB at 1kHz Servo Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) UTPUTS 100½...
  • Page 19 SPECIFICATIONS 30 SERIES GRAPHIC EQs 3215: Electronically Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) NPUTS 75k½ balanced, 50k½ unbalanced MPEDANCE +22 dBu (ref: 0.775Vms) EVEL CMRR >85dB at 1kHz Servo Balanced XLR(pin 2 hot), barrier strip, 1/4" Jack (tip hot) UTPUTS 100½...

This manual is also suitable for:

30313031c3231l3215

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