Io-24a, Audio inputs (top), Audio inputs/outputs (middle) – Logitek Electronic Systems AE-32 Audio Engine User Manual
Page 43: Audio outputs (bottom), Pinout data
Pinout Data
Logitek Audio Engine Reference Manual
41
IO-24A
The IO-24A contains 3x DB25F connectors, the top one being for inputs 1-8, the middle for inputs
9-12 and outputs 1-4, and the bottom for outputs 5-12. DB25M plugs are required.
Audio Inputs (Top)
Pin
Connection
Pin
Connection
1
Input 1 +
14
Input 2 +
2
Input 1 -
15
Input 2 -
3
Ground
16
Ground
4
Input 3 +
17
Input 4 +
5
Input 3 -
18
Input 4 -
6
Ground
19
Ground
7
Input 5 +
20
Input 6 +
8
Input 5 -
21
Input 6 -
9
Ground
22
Ground
10
Input 7 +
23
Input 8 +
11
Input 7 -
24
Input 8 -
12
Ground
25
Ground
13
No connect
Audio Inputs/Outputs (Middle)
Pin
Connection
Pin
Connection
1
Input 9 +
14
Input 10 +
2
Input 9 -
15
Input 10 -
3
Ground
16
Ground
4
Input 11 +
17
Input 12 +
5
Input 11 -
18
Input 12 -
6
Ground
19
Ground
7
Output 1 +
20
Output 2 +
8
Output 1 -
21
Output 2 -
9
Ground
22
Ground
10
Output 3 +
23
Output 4 +
11
Output 3 -
24
Output 4 -
12
Ground
25
Ground
13
No connect
Audio Outputs (Bottom)
Pin
Connection
Pin
Connection
1
Output 5 +
14
Output 6 +
2
Output 5 -
15
Output 6 -
3
Ground
16
Ground
4
Output 7 +
17
Output 8 +
5
Output 7 -
18
Output 8 -
6
Ground
19
Ground
7
Output 9 +
20
Output 10 +
8
Output 9 -
21
Output 10 -
9
Ground
22
Ground
10
Output 11 + 23
Output 12 +
11
Output 11 -
24
Output 12 -
12
Ground
25
Ground
13
No connect
TIP: If using unbalanced connections, jumper the negative pins to ground.