Samson L2400 User Manual

12

CHANNEL  -  MONO MIC/LINE INPUTS 
The L Series mixers offer plenty of mono mic/line 

and stereo line input channels, sixteen on the L2400 

and twenty four on the L3200’s, for connecting a 

variety of signal sources from microphones to line 

level devices such as synthesizers, drum machines 

and direct boxes. The mono mic/line inputs each 

have a LINE level, Hi-Z (High Impedance) input, a 

MIC level, Low-Z (Low Impedance) input; and an 

Insert connector for effects.  Both LINE and MIC 

inputs are balanced, with MIC inputs compatible 

with microphones of output impedance 50-600 

Ohms and LINE inputs compatible with line level 

devices of 600 Ohms.  Following is a description of 

the Mic/Line input connectors:

The L2400 and L3200 have a 1/4-inch, TRS (TIP/

RING/SLEEVE) Insert jack for connecting outboard 

effects processors directly on the channel input. The 

signal is sent on the tip (the Send) and returns on 

the ring (the Return) of the connector. 

Use these inputs to connect high impedance micro-

phones, synthesizers and drum machines. The LINE 

inputs have a nominal operating level of -40dBV 

through - 10dBV. TRS phone jack connector pin-out 

- Sleeve: Ground, Tip: Hot (+), Ring: Cold (-)
NOTE: It is not possible to simultaneously use both 

the LINE and MIC inputs on the same channel. For 

each channel, use only one of the inputs as appro-

priate for the input source.
3 - MIC - Microphone Input

Use these inputs to connect Low Impedance micro-

phones and low-level signals from direct boxes. 

The MIC inputs have a nominal operating level of 

–50dBV through -20dBV.  The MIC inputs also feature 

+48V phantom power, allowing you to use condens-

er microphones. The Phantom Power is switched 

on/off simultaneously for channels 1 through 20(28).  

XLR connector pin-out - Pin 1: Ground, Pin 2: Hot (+), 

Pin 3: Cold (-) 
Stereo Input Channels - 1/4-inch and XLR

Each of the L Series mixers has four stereo line level 

input channels for connecting stereo signals like 

those from CD or MP3 players, electronic keyboards, 

drum machines and other line level signals. The first 

two stereo inputs also include an extra mic pream-

plifier. Use these for connecting stereo signals like 

those from CD or MP3 players, electronic keyboards, 

drum machines and other line level signals. The 

remaining stereo inputs have both 1/4-inch and RCA 

connectors for connecting your gear. Following is a 

description of the Mic/Line input connectors:

The L2400 and L3200 have two pairs of 1/4-inch 

jacks for connecting stereo line level sources. For 

stereo inputs use the LINE L to connect the left chan-

nel and the LINE R to connect the right channel.  

Use these inputs to connect high impedance micro-

phones, synthesizers and drum machines. The LINE 

inputs have a nominal operating level of -40dBV 

through - 10dBV. TRS phone jack connector pin-out 

- Sleeve: Ground, Tip: Hot (+), Ring: Cold (-)

Use these inputs to connect Low Impedance micro-

phones and low-level signals from direct boxes. 

The MIC inputs have a nominal operating level of 

–50dBV through -20dBV.  The MIC inputs also feature 

+48V phantom power, allowing you to use condens-

er microphones. The Phantom Power is switched 

on/off simultaneously for channels 1 through 20(28).  

XLR connector pin-out - Pin 1: Ground, Pin 2: Hot (+), 

Pin 3: Cold (-)