Operating instructions

11. INPUT/OUTPUT CONNECTORS

1/4 TRS

The TRS (Tip Ring Sleeve) connector is balanced and wired as Tip = High (+), Ring = Low (-), and

Sleeve = Ground.

XLR

The XLR input connector is balanced and wired as Pin 2=High (+), Pin 3=Low (-), and Pin 1=Ground.

EURO BLOCK

HD131

HD 215, HD231

CAUTION: Only one input option should be chosen for audio connection at the same time.

FOR BALANCED CONNECTIONS

Wire the connectors as follows:

Phone Jack Connection

tip = High (+)

ring = Low (-)

sleeve = ground

FOR UNBALANCED CONNECTIONS

Use 1/4 inch tip-ring-sleeve or mono phone plug connectors wired as follows:

Phone Jack Connection

tip = High (+)

ring = no connection

sleeve = ground