Handy Charts

Standard Audio Connections

XLR Conncetions Balanced XLR
    Pin #1 = Shield (Common)
    Pin #2 = + (Hot)
    Pin #3 = - (Cold)

Phone Plug (TRS) (Balanced)
    Tip = + (Hot)
    Ring = - (Cold)
    Sleeve = Shield
    (Available in ¼-inch, 3.5-mm (miniature), and 2.5-mm (subminiature) sizes

TRS Connections Phone Plug (TRS) (Stereo)
    Tip = Left Channel
    Ring = Right Channel
    Sleeve = Common
    (Available in ¼-inch, 3.5-mm (miniature), and 2.5-mm (subminiature) sizes

Phone Plug (TR) (Unbalanced)
    Tip = + (Hot)
    Sleeve = - (Shield)
    (Available in ¼-inch, 3.5-mm (miniature), and 2.5-mm (subminiature) sizes

Ampehol Connector RCA Phono Plug
    Tip = + (Hot)
    Sleeve = - (Shield)

Amphenol 3-Pin Balanced Microphone Connector
    Pin #1 = Shield (Common)
    Pin #2 = + (Hot)
    Pin #3 = - (Cold)

D-Sub 25 D-Sub25 Connectors
    The D-Sub25 frequently is used for connecting multichannel audio signals. Until the AES59 standard was introduced, manufacturers often used non-standard proprietary connection schemes, many of which are still around. Two of them are shown here, along with the typical analog connection and the AES standard connection scheme.

Modular Connections Modular Phone Jack (RJ11, -48 volt, 2- line system, US)
   Position 1 Black = Line #2 + (Common)
   Position 2 Red = Line #1 - (Hot)
   Position 3 Green = Line #1 + (Common)
   Position 4 Yellow = Line #2 - (Hot)

CAT 5 CAT 5 - RJ45 (T-568A)
   1 - White Green
   2 - Green
   3 - Orange white
   4 - Blue
   5 - White Blue
   6 - Orange
   7 - White Brown
   8 - Brown

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Revised 11/23/2019

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