Modifications
and DIY
DB25 (THX)Pin out Assignment
The following is the pin out assignment for the DB25 connector used on many components such as those from Onkyo, Rotel and others. These components consist of Receivers, decoders, Preamps and amplifiers. You can use these pin outs to construct your own DB25 to 6 RCA, 6 RCA to DB25 and DB25-DB25 inter-connects.
Pin 1 left
Pin 14 left ground
Pin 2 center
Pin 15 center ground
Pin 3 right
Pin 16 right ground
Pin 4 Low frequency signal (subwoofer)
Pin 17 Low frequency signal (subwoofer) ground
Pin 5 left surround
Pin 18 left surround ground
Pin 6 right surround
Pin 19 right surround ground