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The M-16DX Never Forgets
Once you’ve performed an RAC analysis and adjustment, the M-16DX stores
the resulting response curve for you in its memory. You can quickly recall
a response curve whenever you resume work in an environment you’ve
already analyzed and RAC-adjusted. You can store four Flat response curves,
four Bump Response curves, and four Warm response curves.
You can also replace individual stored curves as described later on in
this booklet. If you like, you can clear out all of your RAC response
curves at once using the UTILITY menu’s Initialize command set to its
ALL or GEQ/RAC setting, as described in the M-16DX Owner’s Manual.
When you initialize your RAC curves or perform a factory reset, all of
your stored curves are permanently erased, so only do this if you’re
sure you want to.
What Happens In an RAC Analysis and Adjustment
While you’ll be able to see what RAC is doing as it runs through its analysis
and adjustment, it goes by pretty quickly, so we thought we’d tell you what
you’ll be seeing before we actually perform the procedure—this gives us
a bit more time to explain things. The procedure is pretty much automatic
once you get it going, working first on your left speaker, and then on your
right. When you initiate an RAC analysis and adjustment procedure:
After you select a Flat, Bump, or Warm response-curve memory
1
location to use, the M-16DX sends its test signal to your left speaker
and analyzes what it “hears.”
The M-16DX tries out a handful of corrective EQ curves and listens to
2
each one until it’s satisfied that the best curve has been found, which
it then writes into the selected response-curve memory location.
(You can see the curves it’s trying out as it works.)
The M-16DX moves on to your right speaker and repeats Steps 1 and
3
2.
Setting up for an RAC Analysis and Adjustment
Selecting Your Test Mic
On the back of the M-16DX mixer, you’ll find its built-in ROOM ACOUSTIC
SENSOR.
The ROOM ACOUSTIC SENSOR is a high-quality mic designed for analyzing
your speakers as part of the RAC analysis and adjustment process. You’ll
typically get great results using the ROOM ACOUSTIC SENSOR.
Using Another Mic from Your Collection
If you’d prefer to use a high-quality mic of your own for this purpose, you
can. Here’s how:
Connect the mic to the Input 1 XLR jack.
1
On the rear of the M-16DX mixer, 2
flip the RAC SOURCE switch up to its
EXT position—when you do this, the
display shows that Input 1 is being
used for RAC analysis.
If you try to change any of Channel 1’s EQ settings or press its SEL
button, the M-16DX reminds you that the channel’s currently being
used for RAC.