Massive Audio D2500.1 block series Specifications download pdf (Page 21)

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 select +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

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Massive Audio D2500.1 block series Specifications Page 21

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