Crunch P1500.1 Specifications download pdf (Page 13)

XLR Balanced Input

Check output of source unit for proper signal polarity

1/4" TRS Balanced Input

Check output of source unit for proper signal polarity

Pin 1 = GND

Pin 2 = (+)

Pin 3 = (–)

INPUT FROM

SOURCE

Tip = (+)

Ring = (–)

Sleeve = GND

INPUT

FROM

SOURCE

Many popular mixers use unbalanced outputs and can be used with the Hafler amplifier. To minimize residual

ground noise, we recommend using twisted pair cable or short cable lengths in this type of configuration.

XLR Unbalanced Input

Connect (–) and GND (shield) terminals at

both ends

of cable to

prevent unstable amplifier operation

1/4" TRS Unbalanced Input

Pin 1 = GND

Pin 2 = (+)

Pin 3 = GND

INPUT FROM

SOURCE

Tip = (+)

Sleeve = GND

INPUT

FROM

SOURCE

GND

–

SHIELD

–

INPUT

The input jacks located on the back of the amplifier are dual function connectors which accept 1/4" Phone (Tip

Ring Sleeve) or XLR plugs. The 1/4" Phone jack is connected according to conventional usage. The XLR jack is

connected according to the IEC and AES standard.

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Crunch P1500.1 Specifications Page 13