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LA Audio Electronic EQX20 Operation Manual

Dual 3 band, mono 6 band parametric equaliser
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Dual 3 Band, Mono 6 Band
Parametric Equaliser
OPERATION MANUAL

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Summary of Contents for LA Audio Electronic EQX20

  • Page 1 Dual 3 Band, Mono 6 Band Parametric Equaliser OPERATION MANUAL...
  • Page 2 Version - V1 April 2000 Page 2...

  • Page 3: Table Of Contents

    Signal levels External connections Warranty Description of controls Channel 1 Channel 2 Applications Setting up and using the EQX20 Audio sweetening and Precision equalisation Removing subsonics Making compressors frequency conscious Special effects Enhancing the EQ on a mixing console Circuit description...

  • Page 4: Introduction

    1.0 INTRODUCTION The EQX20 is a two channel 3 band Parametric Equaliser which can also be configured as a single channel 6 band unit. Each band offers variable Frequency, 15dB cut and boost and variable Q (Bandwidth). Having all parameters fully variable makes the EQX20 a powerful tool capable of a range of effects from subtle fine tuning through to radical tonal changes.

  • Page 5: Installation

    PLEASE READ THIS SECTION BEFORE USING THE EQX20 2.1 INSPECTION AND UNPACKING The EQX20 has been carefully packed at our factory in a carton designed to withstand handling in transit. Should the unit appear to have been damaged in transit notify your dealer immediately and do not discard any of the packing.

  • Page 6: Signal Levels

    An incorrect fuse could cause damage to the unit and may constitute a fire hazard. If you carry your EQX20 from one country to another it is very important to ensure the voltage is compatible. For your information the unit can be internally rewired for use in 230V, or 110-125V countries - contact your dealer for information.
  • Page 7 The input and outputs of the EQX20 are balanced on both XLR and 1/4" TRS jack connectors. For balanced input and outputs, connections to the unit should be wired as follows: TRS jack -10dBV For un-balanced operation join Ring and Sleeve on input, output or both...

  • Page 8: Warranty

    3.0 WARRANTY Your LA Audio EQX20 has been manufactured to a high standard using quality components. If correctly installed and operated the unit should give years of problem free operation. However in the event of a defect in material or workmanship causing failure...

  • Page 9: Description Of Controls

    Q, CCW affects a very small band. The Q control on the EQX20 has a range of 0.3 (3 octaves) to 12 (1/12th octave). The following diagram shows the effect of different Q settings.
  • Page 10 In general lower Qs are used when boosting and higher Qs when cutting - see applications FREQUENCY control This control adjusts the centre frequency for LF cut or boost The LF FREQUENCY control has a 40:1 range and is adjustable from 20Hz, CCW to 1kHz, CW.
  • Page 11 The led lights at 3dB before clipping so momentary peaks are monitored but are not necessarily audible. Excessive amounts of boost will cause the EQX20 to clip. Remember that overlapping boost from two sections can also accumulate and cause overload.
  • Page 12 In MONO (6 Band) mode only the filter switch on Channel 1 is enabled. MONO led Pressing the MODE switch on the rear of the EQX20 lights the MONO led. This puts the two EQ channels in series to form a single mono 6 band unit.

  • Page 13: Applications

    5.0 APPLICATIONS Setting up and using the EQX20 Refer to Section 2.6 External connections on page 5 for connecting to and from the EQX20. Now unless you are familiar with operating parametric equalisers a good starting point will be ...
  • Page 14 Kick drum Slap at 3-5kHz Bass at 40-125Hz Snare drum Crack at 2-3kHz Body at 125Hz to 300Hz Bottom 80Hz Floppy around 600-650Hz Boomy below 80Hz 'In the way' 1kHz Page 14...

  • Page 15: Removing Subsonics

    MAKING A COMPRESSOR FREQUENCY CONSCIOUS Inserting the EQX20 into the side chain of a compressor such as the GCX2 will make the compressor more sensitive to certain frequencies. Examples of this technique are De-Essing and De-Popping.

  • Page 16: Enhancing The Eq On A Mixing Console

    ENHANCING THE EQ ON A MIXING CONSOLE Patch the EQX20 into the insert points on your console to add further equalisation capabilities when treating individual sounds. Or patch into Group inserts for equalising sub-mixes or into the Stereo inserts for overall mix EQ.

  • Page 17: Circuit Description

    Audio output Fig: 6.0.1 Block diagram of the LA EQX20 showing the main signal paths AUDIO PATH The input signal first passes through the electronically balanced input stage which provides RF filtering and rejection of common mode noise signals.

  • Page 18: Specifications

    INPUTS Type electronically balanced XLR-F +4dBu, wired pin 2 = hot (signal +) 1/4' TRS jack -10dBV, wired Tip = hot Impedance 20kΩ Maximum input +20dBu OUTPUTS Type Ground sensing, balanced impedance XLR-M +4dBu, wired pin 2 = hot (signal +) 1/4"...
  • Page 19 Dimensions Weight LA Audio reserves the right to alter any feature or specification without prior notice E&OE 1.75" (44mm)H x 19" (482mm)W x 6.5" (165mm)D Unit = 2.2kg, Shipping = 2.85kg Page 19...
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