ULTRACURVE PRO DEQ2496
subsequent messages inform you that the unit analyzes the
level of the ambient noise at first, before it measures the noise
signal applied. Subsequently, the ULTRACURVE PRO corrects
the EQ values. Press STOP AUTO EQ to cancel this process.
Fig. 3.27: RTA menu (page 3)
If you wish to display the RTA in a larger format, please go to
page 3, where the illustration covers the whole display. All the
other functions available on page 2 can still be edited (RATE,
Fig. 3.30: AEQ menu (page 3)
.8.1 AUTO EQ function (AEQ)
Page 3 of this menu shows the graphic EQ with the settings
adjusted on page 1. Here, too, you can START AUTO EQing and
change the NOISE GAIN parameter (large data wheel). However,
this page includes two additional parameters: DMAX adjusts the
maximum difference between two adjacent filters from 0 to
The RTA menu (page 1) also includes an AUTO EQ function,
which allows you to analyze and correct the frequency response
automatically. This module is subdivided into three additional
pages. Please note that for the AEQ function to work you must
connect a measuring microphone to the RTA/MIC input (see
+15 dB (large data wheel), while MAX. SPAN (lower data wheel)
controls the maximum distance allowed between the desired
and real frequency response curve (0 to 30 dB). When this
value is exceeded, the corresponding range will not be
processed. Press the B key (DONE) to complete this process
and keep the adjusted curve. Press the RTA key to cancel.
Please note the AUTO EQ does not automatically terminate the
After leaving the first page of the AEQ menu, there
is no way of returning to this page, but by leaving
the entire menu and recalling it again.
Fig. 3.28: AEQ menu (page 1)
In terms of setup and functionality page 1 is identical to the
GEQ menu (see chapter 3.2.1). You can determine the desired
frequency response manually, onto which the automatic
frequency response correction of the input/output signals shall
be based. Once the curve of your choice has been set up,
please switch to the second page of the AEQ menu.
.9 MEMORY menu
In the MEMORY menu you can save and recall complete
presets (page 1) or load and save individual modules (page 2).
Modules that are active within a preset are marked by a letter
(G = GEQ, P = PEQ, D = DEQ, W = WIDTH, Y = DYN). If the stored
I/O settings differ from the current ones, an I (=I/O) will appear
next to the letter indicating the module.
When you activate the AEQ menu, the current GEQ
settings will be taken over and used as the
desired frequency response curve.
Press the large data wheel to exclude individual frequency
bands from the AEQ mode. These bands will not be processed
by the automatic frequency response correction. It makes sense
to exclude the low-frequency range (up to approx. 100 Hz) from
AUTO EQing, because it is this range that may produce
inaccuracies during the calculation of the frequency response,
which might impair the results achieved with the AUTO EQ.
Fig. 3.31: MEMORY menu (page 1)
On the first page of this menu, you can save and recall complete
presets. To save a previously edited preset please use the large
data wheel to select a memory location from the table shown
(max. 64 user locations).
Preset #0 (INITIAL DATA) is a neutral default setting
which cannot be overwritten (READONLY).
Fig. 3.29: AEQ menu (page 2)
You can either select an EMPTY memory location or overwrite
an existing preset, as long as it is not write-protected (PROTEC
ON). After selecting a memory location, press the A key to store
the preset (STORE PRESET).
On this page the signal to be processed is displayed as in the
RTA menu. The MAX. parameter lets you select an excerpt of
the entire level spectrum, depending on the actual magnitude of
the signal level (upper data wheel). The RANGE value is firmly
set to 30 dB. Press the upper data wheel to activate AUTO
mode, which automatically adjusts the displayed excerpt,
depending on the signal level. With the NOISE GAIN parameter
When you try to overwrite an existing preset and
press the A key, the DEQ2496 will prompt you to
confirm your overwrite command (OVERWRITE
DATA?). Press the A key to CANCEL, or the B key
-60 to -10) you can adjust the magnitude of the noise level.
AUTO EQ (lower data wheel) determines the speed at which
the EQs are analyzed and their settings are calculated. You can
select between the settings FAST, MID and SLOW.
or press the large data wheel) to confirm (OK).
After pressing STORE PRESET another menu will appear in
which you can name the preset (max. 16 characters). With the
data wheel (turn) and the upper data wheel (turn and press),
you can select the characters both horizontally and vertically.
Press the center data wheel to enter a character, subsequently
the cursor in the lower entry field will be moved to the next
position. Turn the lower data wheel to select individual positions
and press it to erase individual characters. When you keep the
The B key activates the room correction function (ROOM
CORR.), which cuts the high frequencies and boosts the low-
frequency range by tilting the desired response curve by
When you press the A key (START AUTO EQ), the analyzer
starts measuring and calculating the AEQ settings. The
3. MENU STRUCTURE AND EDITING