Mackie QuadEQ 4 Ch Digital Graphic Equalizer

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    Product Description

    The Mackie Quad EQ is an innovative four-channel, 30-band digital graphic equalizer, which for the first time ever combines Smaart real-time analysis (RTA) and a sound pressure level (SPL) meter. It offers brilliant sounding 24-bit processing and Mackie's Adaptive-Q filters for extremely precise EQ adjustments. A highly accurate, easy-to-read front panel featuring 31 bi-color LED ladders allows the user to view RTA and EQ settings simultaneously. This allows the Quad EQ to provide instant visual reinforcement of EQ changes and their effect through the sound system to the engineer.

    The Quad EQ includes a bundled SIA reference microphone for real-time frequency analysis and SPL monitoring, as well as a host of useful features like stereo linking of channels A/B and C/D, simultaneous A, B and C-weighted SPL meter functionality, a built-in Pink Noise generator, and professional XLR and TRS input and output connectors. Finally, 99 user-definable snapshots provide easy storage and recall of repeatedly used settings.

    Mackie Quad EQ Features

    • 4-channels of digital 30 band, Adaptive-Q graphic equalizers
    • Variable High and Low pass filters on each channel
    • Built-in Smaart RTA (Real Time Analyzer) of input or mic signals
    • Simultaneous EQ and RTA display
    • A, B, and C weighted dB-SPL meter function
    • Built-in Pink noise generator
    • 99 snapshots for instant recall of settings
    • Stereo Linking of channels A and B, C and D
    • Intuitive, easy to use front panel
    • Professional-grade XLR & TRS input/output connections
    • Planet Earth Power Supply (100-240VAC 50/60Hz)

    Four Channels of 30-Band Adaptive-Q Equalization
    The Quad EQ employs four 30-band graphic, Adaptive-Q Equalizers—an innovative design that provides equalization +/- 12dB using 30 individual EQ filters, without the ripple and gain-boosting artifacts found on traditional (Constant-Q) units. These Adaptive-Q filters and new, superaccurate LED display ladders paint a highly detailed picture of the Quad EQ’s effect on the output signal. So in other words, what you see is what you get. Of course, if you’re the type of person that likes to measure and analyze, you’d really want to get a mic and an RTA unit, which brings us to...

    Onboard Measurement Tools
    For the first time, sound-pressure level (SPL) and SMAART™ real-time analyzer (RTA) meters are no longer expensive add-ons, but part of a fully integrated, user-friendly package. The Quad EQ includes a bundled SIA reference mic, as well as a dedicated reference mic input. Once plugged in, SPL can be displayed via a bright 3-digit display in the upper right corner (at high SPLs, this meter also serves to warn you of oncoming police officers). Or simply press the Mic button and the built-in RTA will display what’s going on in the room, on the same ultra-bright* ladders as the EQ filters. In this way, you can simultaneously view your EQ settings versus what the results are. And RTA data is post EQ, so if you encounter feedback, you can quickly see it, cut it, and view the results. Now that’s progress.

    Even More Digital Advances
    Of course, with the Quad EQ’s ample processing power, we couldn’t leave well enough alone. So we added some features live sound folks will really appreciate: 99 user snapshots to store and recall your EQ settings; a built-in pink noise generator; variable Hi and Low pass filters with multiple slopes on all four channels; Stereo Linking of channels A/B and C/D; high-quality TRS and XLR input/output, and a Planet Earth power supply for use anywhere between 100 and 240v.

    Mackie, in collaboration with Acuma Labs and SIA Software, is introducing the Quad Series of digital signal processors. The Quad Series processors combine high-quality 24-bit processing and stellar audio performance with intuitive and feature-packed user interfaces designed for serious live sound applications.

    * People are really attracted to sound engineers who know how to operate equipment with lots of flashing lights, so the Quad EQ was especially designed with plenty of lights in operation.

    Product Specifications

    Mackie Quad EQ Specifications

      Frequency Response
    • 15 Hz-20 kHz ±0.2 dB


    • 0.01% (15 Hz-20 kHz)

      Signal to Noise Ratio

    • Analog in to Analog out, ref to +4 dBu: 104 dB

      Propagation Delay

    • 3.2 mS

      EQ Filters
      30 Adaptive-Q filters, +/-12dB Range

    • HPF: 20 Hz -3 kHz, 12 or 24 dB/octave Linkwitz-Riley
    • LPF 1 kHz-20 kHz, 12 or 24 dB/octave Linkwitz-Riley

      Analog Inputs

    • Connectors: XLR female and TRS
    • Maximum input level: +22 dBu
    • Input level range: ±15 dB digital trim
    • Impedance: 10k ohms


    • 24-bits (20-20 kHz, ±1 dB)
    • Dynamic Range: 106 dB
    • Crosstalk: –110 dB @ 1 kHz

      Measurement Mic Input

    • Connector: XLR female
    • Gain: Fixed at appropriate level for supplied Mic
    • Impedance: 10k ohms
    • Phantom Power: 48 V applied continuously

      Analog Outputs

    • Connectors: XLR male & TRS
    • Maximum output level: +22 dBu balanced, +20 dBu unbalanced
    • Impedance: 150 ohms


    • 24-bits (20-20 kHz, ±1 dB)
    • Dynamic Range: 108 dB
    • Crosstalk: –115 dB @ 1 kHz
    • Sample Rates: 48 kHz
    • Digital Signal Processing: 32-bit floating point


    • 100-240 VAC, 50/60 Hz auto-switching


    • Width: 19 inches (483 mm)
    • Height: 3.5 inches (88 mm) 2 rackspaces
    • Depth: 10.7 inches (271 mm)
    • Weight: 10 lbs (4.6 kg)

    LOUD Technologies Inc. is always striving to improve our prod-ucts by incorporating new and improved materials, components, and manufacturing methods. Therefore, we reserve the right to change these specifications at any time without notice.

    Helpful Info about the Manufacturer
    Phone:  800-258-6883 Warranty:  All SRM, DLM, HD, iP and C Speakers, Reach, PPM Mixers, HRmk2 Studio Monitors: 3-year inclusive of electronics, 2-year drivers (where applicable), nontransferable; Thump, Freeplay, Onyx Mixers and Interfaces, DL, VLZ4, ProFX mixers, MRmk3 Studio Monitors, Big Knob, MCU Pro Series, SP260, FRS Series Amplifiers, Mixer Bags/Covers/Hardware, Loudspeaker Bags/Covers/Hardware: 1-year nontransferable; FreePlay Lithium Ion Battery: 90-day all inclusive, nontransferable;B-Stock items, 90 days.
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