I understand what it is supposed to do. But has anyone tried it with good results? Did it actually flatten the response?
I ask because I may be getting one and because all autoEQing I have ever experienced never seems to work very well.
That's because, in a car, unless you have a 10,000 dollar unit, it wont'! Cars are harsh environments, auto-EQing is a home thing, IMO. Too many reflections and resonance for a machine to calculate it for you. Scott Buwalda did a good write-up on RTA's and why this was the case. Anyway, perhaps try starting with a preset EQ that sounds decent, and then play with it from there. Here are a few tips to get you started
1.Play good music, not necessarily what you like, but pick something you are fimiliar with that and is complex, no rap. One song that worked well for me is "Do nothing till you hear from me", by harry connick Jr. The piano section will pick up any treble peaks you have quickly at moderate listening levels. Anything that's recorded well is a good bet.
2.Always better to cut that boost. Try this, boost a band almost all the way up. You'll notice that no matter what band you pick, it's now staring you in the face, no listening time will make it sound right. Now take that band all the way down, while it still may sound off, its still 10000x more natural. This is because are ears are accustomed to having certain frequencies drop off in everday life, they compensate quickly. In addition, by turning it down you lower your chance of overdriving equipment. So if you really don't know what to do with a band, either leave it alone or turn it down a bit.
3. Let your ears be the final judge. This is where a good set of headphones with a nice CD comes in handy. Don't be scared to really boost or cut a frequency just because "that can't be right". Like I said before, cars are wierd environments, many of the most natural sounding cars wouldn't seem so natural if you looked at an RTA, it's just a byproduct of the environment.