Stereo Input Channel, Main Section, Insert

EURORACK MX2004A

2.5 Insert

Insert points are useful for adding dynamic processing or equalization to a channel or the mix. Unlike reverbs etc., which are usually added to the dry signal, dynamic processing is normally applied across an entire signal. Here an aux send would be inappropriate. Instead the signal is intercepted somewhere along the channel, fed through the dynamics processor and/or EQ, then returned to the console at the same point where it left. The insert point is normalized, i.e. the signal is only interrupted when a jack is plugged into it.

3. STEREO INPUT CHANNEL

Each stereo channel comes with two balanced line level inputs on 1/4" TRS connectors, for left and right signals. When only the left input is connected, the channel operates in mono.

3.1 Input level setting

The stereo inputs are designed for any line level signal. Most line level sources such as MIDI instruments and FX units will have their own output level control. Those that don’t, for example CD players, all have an output level within the scope of the MX2004A. When the channel and master fader are set to unity gain the meters should read between -4 and +7 dB. Remember that there is 15 dB gain on both the channel as well as master fader.

3.2 Equalizer

The stereo input channels are fitted with 4-band EQ. The upper and lower shelving controls have their frequen-

cies fixed at 12 kHz and 80 Hz. The peaking high midrange and low midrange / are fixed at 3 kHz and 500 Hz respectively. A stereo equalizer is generally preferable to using two mono equalizers when EQ-ing a stereo signal, as often discrepancies between left and right settings can occur.

3.3 Aux sends

These are the same as for mono channels (see 2.3). Note that a mono sum is taken from the stereo input.

3.4 Routing

The only difference here from the mono channel described in 2.4 is in the implementation of the balance control

When a channel is run in stereo, this control functions as a balance control, determining the relative balance of the left and right channel signals being sent to the left and right main mix buses. For example, with the balance control turned fully clockwise, only the right portion of the channel’s stereo signal will be routed to the main mix.

Balance also determines the relative amount of left and right channel signals being sent to buses 3 and 4 respectively when Mute/Alt 3-4 is engaged.

4. MAIN SECTION

4.1 Aux sends

Master aux send levels are determined by and . These controls have a centre detent indicating unity gain. Don’t worry if your effects unit has no input gain control—you have a further +15 dB available from these outputs.