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6
The RAC Analysis and Adjustment Procedure
Now that you know what to expect, here’s how to perform an RAC analysis
and adjustment procedure.
Automatic Analysis and Adjustment
Hold down the CURSOR BWD ad FWD buttons together to get to the 1
UTLILITY menu, and cursor to the RAC-FINALIZE value.
2 Set the parameter as desired. If you’re working
in a studio setting—
• set RAC-FINALIZE to CTRL, for “CONTROL
ROOM.”
on a live mix—
• set RAC-FINALIZE to MAIN.
Press the ROOM ACOUSTIC
3
CONTROL button so it lights,
turning on RAC. The M-16DX
displays the first RAC screen.
Speaker
Curve
Percent
We’ll talk about what you see on this screen more later—what you see
before doing an RAC analysis and adjustment isn’t that meaningful.
Use CURSOR FWD to highlight the curve value.4
Use the - and/or + VALUE buttons to select the desired Flat, Bump, or 5
Warm memory location for the type of RAC adjustment you want.
If you’d like to replace an already-stored response curve, select it
now—your new curve will take its place.
Hold down the ROOM ACOUSTIC CONTROL button for a couple of 6
seconds until it and the 16 BAND GRAPHIC EQ button blink, and the
first analysis screen appears.
Watch the display as the M-16DX works. If it asks you to turn your
output level up or down, do as instructed. If you’re working in a studio
context, adjust the PHONES/CTRL ROOM knob’s setting. If you’re doing
live sound, adjust the MAIN LEVEL knob’s setting.
As the M-16DX analyzes your left speaker’s response, it displays
“Measuring.” Next, it tries out a few corrective response curves until it
finds the best one. After it’s optimized the M-16DX’s output for your
left speaker, it repeats the process for your right-hand speaker.
When the analysis and adjustment process is complete, the M-16DX
shows you the resulting EQ settings for its left and right outputs.
The upper row of sliders shows the settings
for the 16 left-speaker EQ bands. The lower
row shows the right speaker’s EQ.
The position of the EQ sliders shows the unique response curve RAC
has just created for you. There’s not enough space on the display to
identify the EQ band associated with each slider, but we can show
you here:
25 Hz 63 Hz
40 Hz 100 Hz 250 Hz 630 Hz 1.6 kHz 4 kHz 10 kHz 20 kHz
160 Hz 400 Hz
1 kHz 2.5 kHz 6.3 kHz 16 kHz
That’s it—the RAC and 16 BAND EQ buttons have stopped flashing 7
and the M-16DX’s output is now optimized for your speakers and
room.