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ART EQ 351

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Online : On order, currently unavailable.
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This item is warranted for 3 years
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Ref.: 251597
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Description

Essential Information on the 31-Band 1U "1 Channel" Graphic Equalizer

  • Correction Precision: 31 bands in 1/3 octave (ISO standard) with constant Q factor filters to finely shape a mix, stage monitor, or broadcast.
  • System Protection: adjustable subsonic and ultrasonic filters to clean up extreme lows, reduce unwanted vibrations, and control extreme highs.
  • Immediate Control: selectable correction range of +/-6 dB or +/-12 dB, ideal for both subtle tweaks and more pronounced corrections.
  • Easy Integration: comprehensive connectivity with balanced jacks and XLR and unbalanced RCA, in a 1U rack format.

An Essential "Studio and Live" Tool for 1/3 Octave Adjustment

The 31-band graphic equalizer remains a reliable choice whenever quick intervention on the spectral balance of an audio chain is needed: room correction, optimization of a sound system, resonance suppression, or monitoring adjustment. The choice of constant Q factor filtering ensures consistent correction across all bands, helping to work cleanly without unnecessarily distorting adjacent frequency areas.

Who Is It For and What Are Its Uses?

This 1-channel model is aimed at project studios, control rooms, sound providers, and musicians who want a physical, readable, and immediate equalizer. It is particularly relevant for calibrating a control speaker, refining a monitoring bus, processing a DJ output or a broadcast line, and securing the low end thanks to subsonic filtering. On the front panel, the 31 sliders provide instant visual feedback of the curve, convenient when quick adjustments are needed during rehearsals, in venues, or fixed installations.

Key Features: Musicality, Safety, and Headroom

31 Bands 1/3 Octave with Constant Q Factor

With a 1/3 octave distribution, you precisely target problematic frequencies (resonances, harshness, excess bass) while maintaining a very effective "system" approach. The constant Q contributes to more predictable corrections by limiting excessive bandwidth widening when boosting or cutting levels.

Adjustable Subsonic and Ultrasonic Filters

Dedicated filters clean up what does not serve the music: very low hums, vibrations, handling noise, or out-of-band energy. The result is a more stable signal, better headroom before saturation, and often a cleaner mix sensation, especially on sound reinforcement systems or near-wall listening setups.

Two Correction Ranges: Precision or Intervention

The choice between +/-6 dB and +/-12 dB makes the equalizer versatile: at 6 dB, you perform fine tweaks without overcorrecting; at 12 dB, you have the reserve needed to tame a difficult room or compensate for marked imbalance.

Audio Performance and Rack Connectivity

The specified frequency response of 20 Hz to 20 kHz with a tolerance of +/-0.5 dB, a THD of 0.01 percent, and a signal-to-noise ratio of -94 dB place this processor in a transparent processing category. For integration, balanced jack and XLR inputs and outputs facilitate wiring in studios and stage racks, while unbalanced RCA connectors allow simple connection to consumer or semi-pro equipment.

Technical Specifications

Type and Processing

  • Type: 1/3 octave, ISO / constant Q factor filter
  • Number of channels: 1
  • Number of bands: 1 x 31 bands
  • Filters: adjustable subsonic and ultrasonic
  • Functions: cut/boost, adjustment at +/-6 dB or +/-12 dB

Audio Performance

  • Frequency response: 20 Hz to 20 kHz, +/-0.5 dB
  • THD: 0.01 percent
  • Signal-to-noise ratio: -94 dB

Inputs / Outputs and Levels

  • Input impedance: 20k ohms (balanced), 15k ohms (unbalanced)
  • Max input level: +22 dBm
  • Output impedance: less than 150 ohms (typ.)
  • Max output level: +18 dBm (balanced) and +22 dBm (unbalanced)
  • I/O: balanced jacks / XLR and unbalanced RCA

Format and Dimensions

  • Rack: 1U
  • Dimensions (H x W x D): 44.45 x 482.6 x 215.9 mm
  • Weight: 2.5 kg
Brand reference number: ART351
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