ULTRACOUSTIC ACX450/ACX900/ACX1800
4.3 Compressor (only in ACX1800)
The compressor reduces the dynamic range of a signal. Volume peaks are lowered, and low signals are boosted, so that the difference between the loudest and the lowest tone of an instrument or voice is reduced. This results in a more expressive and homogeneous sound, and the sustain of long tones is prolonged.
sSwitch on the compressor (ON switch 
).
sTurn the COMPRESSOR controller 
slowly in clockwise direction to increase the compression intensity.
sCompare the compressed and the original signal by switching the compression ON and OFF (at the ON switch).
If the input signal to the compressor is high, it operates at its optimum range. If the signal is low, the effect becomes only audible when the compressor controller is set to a very high position. If a compressor is switched on in this position, there is a risk of sudden level changes. If GAIN is set to a high value, the same compressor effect is achievable without having to set the controller to a high value. In this case, the COMPRESSOR controller does not have to be turned to a position near the stop in order to achieve any effect. We recommend that you try this out until you have found the best settings!
5. INSTALLATION
5.1 Audio connections
With the exception of the balanced LINE jack mono input, all inputs and outputs of the BEHRINGER ULTRACOUSTIC are unbalanced mono jack sockets. The LINE OUT connections are designed as balanced XLR outputs. The CD inputs are designed as RCA connectors.
+Please ensure that only qualified persons install and operate the ULTRACOUSTIC. During installation and operation, persons handling and using the equipment must be sufficiently earthed, as electrostatic discharge might affect the operation of the ULTRACOUSTIC!
Fig. 5.1: XLR connectors
Fig. 5.2: ¼" stereo TRS connector
Fig. 5.3: ¼" TS connector
5. INSTALLATION | 9 |