Behringer Ultracoustic ACX1000 - Manual (Page 8)

8
ULTRACOUSTIC ACX1000
The DISPLAY reads the program number of the currently
active preset. Use the table printed on the effects module
to locate the various groups of effects and associated
program numbers. “--” means that the effects module is
disabled.
When you press the POWER switch on the rear of the unit,
the POWER LED lights up. Be sure to properly connect
your ULTRACOUSTIC to the mains before (see chapter 3
“INSTALLATION”).
With the ENHANCER control you can add treble
frequencies to the microphone/line signal, thus improving
the audio signal’s power and transparency.
The FEEDBACK 1 control adjusts a notch filter that allows
you to suppress feedback frequencies or other forms of
interference. The frequency range is from 650 Hz through
4 kHz. To detect and suppress interference frequencies,
please turn the FEEDBACK 1 control slowly.
The FEEDBACK 2 control determines the frequency of a
second notch filter, ranging from 1.5 kHz through 9.5 kHz.
Use the EFFECT control to determine the intensity of the
effect selected on the effects module (microphone/line
channel).
The WARMTH control adjusts the ULTRACOUSTIC’s tube
emulator circuit. The more you turn this control to the right,
the more upper harmonics are added to the signals on the
instrument or microphone/line channels, which results in a
sound of unobtrusive brilliance with improved power and
transparency.
Use this CONTROL INDICATOR to assess the amount of
upper harmonics added with the WARMTH control.
To achieve the maximum tube emulation effect, both
channels should be set to correct levels. The CLIP
LED should be flashing with signal peaks only. Make
sure it never lights up all the time.
The PHASE switch reverses the phase of the mix signal
by 180°. Use this switch to eliminate feedback problems.
The MASTER control determines the overall volume level
of your ULTRACOUSTIC.
The ULTRACOUSTIC features a limiter circuit in the master
section. The LIM LED lights up as soon as the limiter is on.
The AUX input on the rear of your ACX1000 can be muted
with the MUTE switch.
The AUX LEVEL control in the master section adjusts the
volume level of the AUX signal (e.g. drum computer,
playback) fed in via the AUX IN or TAPE IN jacks on the rear
of the ULTRACOUSTIC.
Your ACX1000 features an on-board effects module that
produces 23 different types of effects comprising 99 effect
variations plus associated program numbers.
Use the four PRESET buttons to assign an effects program
to one of the PRESET buttons and recall it from there. To
save a preset selected with the PROGRAM control, simply
press one of the four PRESET buttons for about 2 seconds,
until its LED lights up. To recall a stored preset, press the
corresponding PRESET button. The mix of signals adjusted
with the EFFECT control will of course be stored as well.
To adjust the MIDI receive channel, press PRESET buttons
#3 and #4. Then, select a MIDI channel with the PROGRAM
control (1 through 16, “on” = Omni, “OF” = inactive). Finally,
quit the menu by pressing either one of the PRESET buttons.
Select one of 99 effect programs with the PROGRAM
control.
The INSTRUMENT CLIP LED lights up as soon as the
effects module starts distorting. Reduce the input gain on
the instrument channel.
The MIC CLIP LED lights up as soon as the effects module
starts distorting. Reduce the input gain on the microphone/
line channel.
2. CONTROL ELEMENTS