Toa Electronics E-1231 Graphic Equalizer

Toa Electronics E-1231 - Single Channel, 28-Band 1/3 Octave Graphic Equalizer

Toa Electronics E-1231 - Single Channel, 28-Band 1/3 Octave Graphic Equalizer

B&H # TOE1231 MFR # E-1231 US
Toa Electronics E-1231 Graphic Equalizer

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  • 1Description

The E-1231 from Toa Electronics is a single channel, twenty-eight band, 1/3 octave active graphic equalizer with 12dB of boost or cut, designed to allow clean, accurate audio equalization for stage, studio, or commercial applications.

The unit's filters are designed for minimum phase shift and feature smooth slide controls with center detents for easy and accurate adjustment. The filters are summed in parallel for reliability, so that the failure of one filter does not interrupt operation of the others.

In addition, continuously variable high and low pass filters are provided on the front panel. The high-pass filter has a slope of 12dB per octave and is variable from 15Hz to 300Hz, while the low-pass filter can set for either a 6dB per octave slope or a 12dB per octave slope and is variable from 2.5kHz to 30kHz.

An automatic EQ bypass function provides complete equalization bypass in the event of loss of AC power and an output muting function suppresses turn on/turn-off transients. A security cover is included with the E-1231 to guard against accidental disturbance, or intentional tampering when used in fixed installations.

Twenty-eight filters on ISO 1/3 octave center frequencies from 31.5Hz to 16kHz
High quality, low phase-shift active filters with 12dB boost or cut at each center frequency
Precision calibrated, noiseless slide controls with center detent
Continuously variable high-pass and low-pass filters
Low-pass filter can be set for either 6dB or 12dB slope per octave with In/Out switch
Variable input level control to accommodate a variety of input sources
Equalizer and filter In/Out switches with automatic EQ bypass circuitry in the event of power failure
LED peak indicator for clipping at input or output levels
Includes security cover to prevent tampering with settings
In the Box
Toa Electronics E-1231 - Single Channel, 28-Band 1/3 Octave Graphic Equalizer
  • Security Cover
  • 2 x Screws for Security Cover
  • Fuse
  • Five (5) Year Warranty
  • Table of Contents
    • 1Description
    Filter Type Graphic
    Number of Channels Single
    Inputs Screw terminal
    Outputs Screw terminal
    Maximum Input Level +20dB @ 1kHz
    Frequency Bands 28
    Bandwidth 1/3 octave
    Range (Boost/Cut) +/-12dB
    Maximum Output Level +20dB with 600Ω load
    Frequency Response 20Hz to 20kHz, +/-1dB
    Dynamic Range Not specified by manufacturer
    Noise -94dB
    Dimensions (WxDxH) 19" x 12 1/2" x 3 1/2"
    Weight 9.9 lbs
    Specialties High and low pass filters with 12dB per octave slopes
    Packaging Infowfswrsxswvtbw
    Box Dimensions (LxWxH) 19.0 x 23.0 x 9.0"

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