zapco ST-X DSP III Series, Руководство пользователя

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Tuning - The Simple Rules
Before you can get what, you want you need to know what you want. In the graphs
below, we look at some different response curves and what they mean and sound like.
Keep in mind that these illustrations are NOT what your EQ graph looks like. They
are what your RTA looks like. If you have a flat response like below on your RTA,
your EQ graph will have lots high spots and low spots to make the RTA graph look
like that.
Flat is not the goal: Generally, a flat response will give a sound lacking in bass and will
sound harsh on the high end and a little "thin" without a lot of body.
An Excellent response curve : Here is a curve that will almost always sound superb in a
vehicle. The bass area as 3 to 4dB above the midrange and the highs slope off smoothly.
This will have good solid bass and a smooth sound through the midrange and highs.
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Once you have these phased you can bring in the mid-bass with the same process.
Again, the focus should be high in the dash. If the mid-bass is out of phase with the
tweeters and mids then they will pull the sound down toward the floor.
Woofers or Subs : There will be bass! You have phased the woofers, so we know there
will be bass. What you need to listen for here is location, and mid-bass (something with
kick drums is ideal). Proper woofer phasing will work with the mid-bass drivers to give
good solid, crisp mid-bass. Out of phase will result in a soft, low-impact mid-bass. Bass
out of phase with the mid-bass will also be more located in the back of the vehicle while
a properly phased bass will blend better into the front soundstage.