Hafler trans-nova P1000, Инструкция по установке и эксплуатации

Страница: 13 / 28

– 4 –
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
1
2
3
GND
–
+
1
2
3
SHIELD
+
SHIELD
SHIELD
+
–
+
BALANCED INPUT
The balanced input jacks 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. Set the BALANCED/UNBALANCED switch to the BALANCED position to use these jacks.
HEADPHONE JACK
A standard 1/4" headphone jack is mounted on the front panel of the amplifier. The headphones are connected to
the output of the amplifier and can be adjusted by the input level controls or the main volume control.
CAUTION: Using headphones at high power levels can cause permanent hearing damage. Always turn
the volume all the way down before putting the headphones on.
OUTPUT CONNECTIONS
The speaker output connectors are screw terminals on a barrier strip. The terminals are sized for 1/4" spade lugs.
MONOPHONIC USE
In systems with high power requirements, the amplifiers can be configured for single channel, bridged mono
operation. To bridge the amplifier, set the front panel Normal/Bridged Mono switch to the MONO position. The
Channel 1 input and level control is used and the Channel 2 level control is not active. The speaker is connected
to the two positive (+) terminals.
When the amplifier is bridged the output is floating. Any speaker which requires a common ground from
the amplifier output cannot be used in this application. Never connect a positive (+) terminal to ground.
Since a bridged amplifier shares the load between the two channels, each channel will effectively drive half
of the load. Therefore, for bridged mono operation we recommend using an eight ohm load as the minimum
impedance.
!
!
!