Behringer DSP8024 Manual De Usuario

Descargar
Página de 36
18
ULTRA-CURVE PRO DSP8024
more than 12 dB to reach the desired frequency response. If this is the case, you may assume that the
loudspeaker system being used is not capable of reproducing this frequency (typically if it is a very low or high
frequency). The ULTRA-CURVE PRO will therefore completely avoid the boosting of this frequency to any
extent. This will avoid any overloading of the loudspeakers.
Please bear in mind that the test signal passes through the equalizer during the measurement procedure.
Therefore, the EQ settings have influence on the manner in which the automatic adjustment takes place. For
example: If you lower the level of frequencies below 100 Hz before starting auto-Q, it will result in these frequencies
not being adjusted. The level detected by the ULTRA-CURVE PRO in that region will not be sufficient to boost
those frequencies. On the other hand, boosting frequencies beforehand can result in them being loud enough to
be automatically equalized. This makes sense when they would normally be unaffected by the automatic procedure.
You can for instance boost frequencies below 80 Hz or above 10 kHz to extend the frequency range contributing
to the measurement. The latter option will put extra strain on the used system but that can be acceptable under
certain conditions i. e. when the levels are relatively low and the highest quality sound is required.
The measuring process begins with the automatic levelling. Then you will notice the coloring of the pink noise
test signal. This means that the individual EQ-bands are adjusted. When the auto-Q process is finished the
ULTRA-CURVE PRO can be set in EQ mode where it automatically displays the achieved EQ setting.
+
After using the auto-Q it is well-advised to even out great differences between individual
bands to avoid overflow problems. Especially in the low frequency region it is best to have a
more gentle flowing frequency response.
+
When you want to finish the measuring process prematurely and save the filter setting, press
. By pressing 
 the measuring process will be aborted, without changing the original
setting.
In the event of the error message “NO SIGNAL DETECTED”, check the measuring microphone. It is possible that
the sensitivity is too low. In this case another microphone should be used, or measuring should be carried out over
an external preamplifier. The adjusted curve is automatically displayed, you can further edit and save this curve.
It is important to use a high quality reference microphone with a flat frequency response. The BEHRINGER
ECM8000 measurement microphone especially designed for this purpose and forms a balanced combination
with the ULTRA-CURVE PRO. Correct positioning is also fundamental to achieving a good result. It is often
best to perform several measurements on slightly different locations to avoid problems as overcompensating
one single position. See chapter 3 for correct microphone positioning.
2.4 General setup
The SETUP menu consists of four windows. Having the EQ or RTA mode active will determine which window is
opened on going into SETUP. Pressing the SETUP key for more than two seconds will enter the general setup
mode which consists of two windows, the GLOBAL SETUP window and the MIDI SETUP window. These
windows contain the basic functions shared by, and affecting both operating modes. The basic configuration
will be determined in these windows, which will be referred to as the configuration windows. Pressing the setup
key will toggle between page 1 & 2. The other windows can only be reached from here by leaving the SETUP
menu by pressing either the EQ or RTA key, and then re-pressing the SETUP key to enter the relevant window.
Fig. 2.10: GLOBAL SETUP menu
The cursor keys are used to select the value or parameter to be changed. The active edit field will be highlighted
in reverse color. Changing status or a value can be achieved by use of the  /  and  /  softkeys.
INPUT
The input field is used to determine whether the input signal should be derived from the optional digital input, or
from the analog input. Furthermore, in analog mode, this is where you can select the sampling rate, 44.1 kHz or
48 kHz. The digital input will automatically synchronize to either 32, 44.1 or 48 kHz. When changing sample
2. OPERATION