Soundcraft EFX12 - 12 Channel Analog Mixer

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The effects section fits neatly into the mixers compact framework which is available with 12 mono input and 2 stereo channels. There are 32 effects to choose from with a tap tempo function, 3 effects parameter controls and a user effects setting store facility. An effects channel level clip LED and Mute function gives the user even more flexibility.

The Soundcraft EFX Series combines all the features of the popular Soundcraft EPM mixer with a built-in 24-bit, digital Lexicon effects processor, expanding the Soundcraft low-cost, multipurpose compact range.

The Soundcraft EFX mixer uses the same AudioDNA processor featured in many of the Digitech and Lexicon outboard equipment including the highly respected Lexicon MX400 processor. With over 35 years experience, the Lexicon name is synonymous with the best reverb and processing in the business, ensuring the finest quality effects not usually found in a console at this price level.

The emphasis with the Soundcraft EFX is very firmly on quality build and audio performance, with an easy to understand control surface in line with the Soundcraft professional range. The Soundcraft EFX uses the highly-transparent GB30 Mic amp (designed by Graham Blyth for the company’s 30th anniversary, and also used on the larger LX7ii and GB Series professional consoles).The Soundcraft EFX also offers all the features of the Soundcraft EPM most notably a configurable aux send, XLR and ¼" metal jack connector sockets, RCA phono stereo playback inputs and record outputs, 3-band EQ with a swept mid on the mono inputs, 3-band EQ on the 2 stereo inputs, TRS insert sockets, inserts on all mono inputs, ten-segment LED output metering and a headphone output.


  • 12+2 channel frame size
  • Built-in 24 bit Lexicon digital effects processor
  • 32 FX settings
  • Tap Tempo and FX setting store function
  • 1 FX send on each channel
  • 1 configurable auxiliary bus
  • XLR-type and ¼” metal jack connector sockets
  • RCA phono stereo playback inputs and record outputs
  • 3-band EQ with a swept mid on mono inputs
  • 3-band EQ on stereo inputs
  • TRS insert sockets and inserts on all mono inputs
  • Ten-segment LED output metering
  • Intuitive and comprehensive solo system
  • Headphone output
  • Easily rack mountable
  • Custom Karaoke preset

The Soundcraft EFX will find itself in many applications including live music, recording, houses of worship and multi-speaker installations.

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Frequency Response
Mic / Line Input to any Output +/-1.5dB, 20Hz – 20kHz
Mic Sensitivity -30dBu, +14dBu @ Mix output < 0.02% @ 1kHz
Mic Input E.I.N. (maximum gain) -127dBu (150Ω source)
Aux, Mix and Masters (@ 0dB, faders down) < -85dBu

Crosstalk (@ 1kHz)
Channel Mute > 96dB
Aux Send Pots Offness > 86dB

EQ (Mono inputs)
HF 12kHz, +/-15dB
MF (swept) 150Hz – 3.5kHz, +/-15dB
LF 80Hz, +/-15dB
Q 1.5

EQ (Stereo inputs)
HF 12kHz, +/-15dB
MF 720Hz, +/-15dB
LF 80Hz, +/-15dB

Input & Output Levels
Mic Input +15dBu max
Line Input +30dBu max
Stereo Input +30dBu max
Mix Output +20dBu max
Headphones (@150Ω) 300mW

Input & Output Impedances
Mic Input 2kΩ
Line Input 10kΩ
Stereo Input 65kΩ (stereo), 35kΩ (mono)
Outputs 150Ω (balanced), 75Ω (unbalanced)

Power Consumption Less than 35W
Temperature Range 5°C to 40°C

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