Samson D-150, Руководство пользователя, Страница: 21 / 28

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Using AUTO EQ with the D2500 Digital Equalizer
When you use the D1500 RTA and the D2500 digital
EQ together they combine to create a powerful auto-
matic equalization system. You simply connect the
two units using D-Net or MIDI, connect a high quality
measurement microphone, like the Samson MM01,
and then the use the D1500’s AUTO EQ feature to let
the onboard DSP’s measure your system response
and adjust the equalizer for a flat response, or for
any EQ response curve that you may have saved in
memory. Follow the steps below to use the AUTO EQ
feature.
Setting up Your Test Mic
• Using a standard XLR microphone cable, plug a
high quality measurement microphone, like the
Samson MM01, into the Mic Input located on the
D1500’s rear panel.
• Position your measurement microphone approxi-
mately 10 feet from your loudspeaker array, half-
way between the low and high frequency drivers.
• Next select the MIC input by pressing the GLOBAL
button until the display reads “Inp.” And use the
DATA WHEEL to choose “Mic”.
• Now, you may need to adjust the microphone
input gain so press the Global switch again until
you see “MG” and 30dB to start, then press
STORE.
NOTE: You may need to come back to this to make
the final mic gain adjustment once you start generat-
ing the PINK NOISE at the desired operating level.
AUTO EQ YOUR SYSTEM
Once you have the Mic Input and Generator GAIN
set you can easily set the equalization curve for any
loudspeaker or system at the press of the single but-
ton. Just follow these simply steps.
• With the measurement microphone in position
and the PINK NOISE Generator on, press the AUTO
EQ button. The display will read "Start: no". Turn the
data wheel to select "Start: yes". Press STORE and
the Auto EQ process begins.
• Now watch, and listen, as the D1500 actually
measures the system frequency performance and
adjusts the filters on the D2500 for a flat response.
You can see the D2500’s EQ filters being automati-
cally set on the D1500’s large LED display.
• You'll see on the D1500 that the D2500 curves are
changing and that the equalizer filters are being
set. After a few minutes you'll see that the process
is slowing down to a stop and no filters are being
set. Now, press AUTO EQ again and the AUTO EQ
switch will stop flashing and you will see the new
equalization curve displayed on the D1500.
Operating the D1500 with the D2500 Equalizer Operating the D1500 with the D2500 Equalizer