INPUT SWITCH

The unbalanced input uses a conventional RCA phone jack. Move the input switch to RCA UNBALANCED to use this jack. The balanced input jack is an XLR plug. The XLR jack is connected according to the IEC and AES standard. Move the input switch to XLR BALANCED to use this jack.

Unbalanced Input

Move input switch to RCA UNBALANCED to use RCA connectors

 

 

 

 

 

 

 

XLR Bal

 

 

-12

-9

 

60 70

80

90

OFF

 

 

-15

-6

 

 

 

 

 

 

 

 

 

100

 

 

 

50

 

 

 

 

 

 

 

-18

-3

 

 

 

 

 

 

 

-21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal In

-24

0dB

Signal In

 

 

 

 

 

 

-27

 

 

 

0

2 3 4

 

(balanced)

-30dB

(Unbalanced)

 

1

120

 

 

 

 

 

 

40HZ

 

Phase @ 80Hz

 

 

 

 

Low Pass

 

Gain

 

ALL OFF

 

 

 

 

 

 

 

dB relative to

 

RCA Unbal

- 270˚

2

 

max gain in

 

- 180˚ 2 + 3

 

 

 

 

 

 

 

3dB steps

 

 

 

 

 

- 90˚ 2 + 3 + 4

Balanced Input

Move input switch to XLR BALANCED to use the XLR connectors

 

 

 

 

 

 

 

XLR Bal

 

 

-12

-9

 

60 70

80

90

OFF

 

 

-15

-6

 

 

 

 

 

 

 

 

 

100

 

 

 

50

 

 

 

 

 

 

 

-18

-3

 

 

 

 

 

 

 

-21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal In

-24

0dB

Signal In

 

 

 

 

 

 

-27

 

 

 

0

2 3 4

 

(balanced)

-30dB

(Unbalanced)

 

1

120

 

 

 

 

 

 

40HZ

 

Phase @ 80Hz

 

Gain

 

Low Pass

ALL OFF

 

 

 

 

 

 

 

dB relative to

 

RCA Unbal

- 270˚

2

 

max gain in

 

- 180˚ 2 + 3

 

 

 

 

 

 

 

3dB steps

 

 

 

 

 

- 90˚ 2 + 3 + 4

XLR WIRING CONFIGURATIONS

Using the balanced XLR input is recommended for installations where long cable runs are used or when the potential for stray electromagnetic fields from other wires exists. There are balanced and unbalanced methods in which the XLR inputs can be used. The first method is an XLR Balanced Input using 3-conductor cable with signal carried on the first conductors, equal in amplitude and opposite in phase, and the third conductor being a ground "drain". In this configuration, noise common on both phases of the signal is effectively "canceled" out. The second method is an XLR Unbalanced Input using 2-conductor cable with the signal carried in the center conductor and the ground carried on the shield. Many popular mixers use unbalanced outputs and can be used with the XLR balanced input. However, in this type of configuration we recommend using twisted pair cable or short cable lengths to prevent residual ground noise.

XLR Balanced Input

Check output from source for proper signal polarity

 

 

INPUT

FROM

 

 

 

SOURCE

Pin 1

= GND

1

GND

Pin 2

= (+)

3

Pin 3

= (–)

+

2

 

XLR Unbalanced Input

Connect (–) and GND (shield) terminals at both ends of cable to

prevent unstable amplifier operation

INPUTFROM

SOURCE

Pin 1

= GND

1

SHIELD

Pin 2

= (+)

 

3

+

Pin 3

= GND

2

 

 

 

– 10 –

Page 19
Image 19
Hafler TRM10S, TRM12S manual Input Switch, XLR Wiring Configurations, Input From Source, Inputfrom Source

TRM12S, TRM10S specifications

The Hafler TRM12S and TRM10S are two standout models in the world of professional studio monitors, designed to meet the demands of sound engineers, audiophiles, and music producers. Known for their exceptional performance and clarity, these monitors are integral to contemporary studio environments.

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