SQN-4S IVe User's Handbook
SQN-4S Series IVe User's Handbook
Contents
11 AUDIO LEVEL METERS 9 MASTER GAIN CONTROL
6 AUXILIARY MONITOR INPUTS 7 MICROPHONES
10 BASS CUTS 14 MIXING AND MATRIXING
19 CONNECTOR LIST 13 MONITORING HEADPHONES
17 CONNECTOR WIRING - 12 WAY 12 OUTPUT LIMITERS
18 CONNECTOR WIRING - 10 WAY 3 OUTPUTS
5 CALIBRATION OF THE RECORDER 2 POWERING THE MIXER
1 INTRODUCTION 15 SLATING MICROPHONE
8 LINE INPUTS 16 WARRANTY & SERVICE
4 LINE-UP TONE
1. INTRODUCTION The basic information necessary to allow a recording engineer to operate the
SQN-4S audio mixer is permanently displayed on its baseplate and cannot be lost. The aim of these
instructions is to explain the mixer’s facilities and functions in more detail to those who are already
familiar with the microphones and techniques that are employed by professional sound recordists.
Users of the earlier SQN mixers will naturally want to know in what respects the SERIES IVe differs
from the previous model. The new mixer again has four input channels and two main outputs. In
addition, access has been provided to the Post-Fader outputs of all of the channels so that it is
possible to feed four fader-controlled (unbalanced) outputs to an external recorder. Pre-fade listening
to all of the input channels is included, as is a ‘slating’ microphone. The power wiring allows the
fuse-protected feeding of external power to other equipment, controlled by the mixer’s Power
Selector switch.
MIXING and MATRIXING. The SQN-4S SERIES IVe returns to a form of the control format
popularised by the earlier SQN-4S SERIES III mixers. In addition to the normal routing of individual
channels, the mixer can be configured as a Stereo Pair, with or without MS matrixing together with
two other pan-pottable channels. The modes of operation for the CH1/CH2 pair are selected by the
[GANG 1-2] switch:
1. TWIN MONO
2. STEREO
3. MID-SIDE (with matrixing to or from AB stereo)
The effects on the operation of the other controls of selecting these three modes are described in
section 14 below.
2. POWERING THE MIXER
1. INTERNAL BATTERY. The SQN-4S should be powered by Mallory Type MN 1500
or another manufacturer's equivalent AA size alkaline cells. The quiescent consumption
of the mixer is approximately 135mA at 12V and with dynamic microphones about 10
hours of continuous operation can be expected from fresh cells.
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