Behringer MDX1400 User Manual

Page 25

AUTOCOM PRO MDX1400

7.1.2 Transformer Balanced Outputs (Optional)
In contrast to electronic balancing, the use of transformer-balanced outputs offers the advantage of galvanic

separation between units. Electrical potential differences and ground loops in audio installations do not

therefore impair the performance of the units.
The transformer-balanced outputs, commonly used in radio and TV engineering, can also be fitted retrospec-

tively upon request. The BEHRINGER transformer OT-1 is designed to the highest exacting standards and is

available as an accessory.
The audio inputs and outputs on the BEHRINGER AUTOCOM PRO are fully balanced. If possible, connect the

unit to other devices in a balanced configuration to allow for maximum interference immunity.

Please ensure that only qualified persons install and operate the AUTOCOM PRO. During

installation and operation the user must have sufficient electrical contact to earth. Electro-

static charges might affect the operation of the AUTOCOM PRO!

Unbalanced use of
mono 1/4" jack plugs

Ring

Balanced use of
stereo 1/4" jack plugs

Balanced use with XLR connectors

Input

Output

Tip =
Signal

Tip =
hot (+ve)

Sleeve =
Ground / Shield

Tip

Sleeve

Strain relief clamp

Ring =
cold (-ve)

For connection of balanced and
unbalanced plugs, ring and sleeve have
to be bridged at the stereo plug.

1 = Ground / Shield
2 = hot (+ve)
3 = cold (-ve)

For unbalanced use pin 1 and pin 3 have to be bridged

Fig. 3.2: Different plug types

Never use unbalanced XLR connections with microphone cables, as this would short-circuit

any phantom power transmitted over these cables!

7. AUDIO CONNECTIONS