Universal Audio Apollo x16 Heritage Edition Rackmount 18x20 Thunder3 Audio Interface with Real-Time UAD Processing - Manual (Page 31)

DB25 Wiring 31 Apollo x16 Hardware Manual
DB25 Wiring
Apollo x16’s analog I/O is accessed via 25-pin D-sub female connectors. Each DB25 jack
carries eight balanced line-level audio channels on the standardized Tascam pinouts also
used with Digidesign and Avid products.
DB25 Connector Pin Numbers
The pin numbers for female DB25 connectors are shown in the diagram below. When
facing the Apollo x16 rear panel, pin 1 is the upper rightmost pin.
Apollo x16 female DB25 pin numbers
DB25 Connector Wiring
The signals carried on the female DB25 connector pins are listed in the table below. Two
channels are listed for each pin. The first is for the connector carrying channels 1 – 8;
the second is for the connector carrying channels 9 – 16.
Note: Pinouts are identical for inputs and outputs.
Apollo x16 DB25 Connector Pinouts
Pin Channels Signal Pin Channels Signal Pin Channels Signal
1 8, 16 Hot 9 3, 11 Cold 17 6, 14 Cold
2 8, 16 Ground 10 2, 10 Hot 18 5, 13 Hot
3 7, 15 Cold 11 2, 10 Ground 19 5, 13 Ground
4 6, 14 Hot 12 1, 9 Cold 20 4, 12 Cold
5 6, 14 Ground 13 – No Connect 21 3, 11 Hot
6 5, 13 Cold 14 8, 16 Cold 22 3, 11 Ground
7 4, 12 Hot 15 7, 15 Hot 23 2, 10 Cold
8 4, 12 Ground 16 7, 15 Ground 24 1, 9 Hot
25 1, 9 Ground
13 1
14 25