Logitek Electronic Systems AE-32 Audio Engine - Manual (Page 42)

Pinout Data
Logitek Audio Engine Reference Manual 40
IO-20A
The IO-20A contains 2 x DB25 connectors, the top one being for inputs and the bottom for
outputs. The pinout designations for the input and output connectors are identical.
Audio Inputs/Outputs
Pin Connection Pin Connection
1 I/O 1 Left + 14 I/O 2 Right +
2 I/O 1 Left - 15 I/O 2 Right -
3 Ground 16 Ground
4 I/O 3 Left + 17 I/O 4 Right +
5 I/O 3 Left - 18 I/O 4 Right -
6 Ground 19 Ground
7 I/O 5 Left + 20 I/O 6 Right +
8 I/O 5 Left - 21 I/O 6 Right -
9 Ground 22 Ground
10 I/O 7 Left + 23 I/O 8 Right +
11 I/O 7 Left - 24 I/O 8 Right -
12 Ground 25 Ground
13 No connect

TIP: If using unbalanced connections, jumper the negative pins to ground.