SLA Pro driver question

[kenkenni]

I bought an additional piece of equipment recently. A Crown XLS2502 Drivecore 2. I,m going to use this for my
SLAs and use my QSC amp for a future pair of passive subs that I haven't decided on yet. I do not see any info
on what to limit the SLAs to in the plans. Can someone share some most common settings when setting up the Driverack
PA2?

[BrentEvans]

When they sound like crap, turn them down.

[kenkenni]

Roger that! I can ride my mixer faders all the way to the top and not get
one hint of distortion. These SLAs are amazing.

[kenkenni]

I am still learning how to use this DBX DRPA2. I was finally able to get an RTA mic and put the Auto-EQ
feature to use. The following pic is what the DRPA set for the auto-eq. I have never used a PEQ before
and was hoping some of you audio gurus can shed some light in layman's terms as to what it did and
why. It sounds pretty good, but I just want a better understanding of all the different bands. Here is the pic.

[Tom Smit]

The yellow line is what the "target" is for frequency response for your listening enviroment. However, your enviroment was different as shown by the grey areas of the graph.To compensate for deficiencies or for over-abundance, the DSP boosted or cut frequencies to try bring the reponse to the yellow line. The resulting frequency response in your enviroment is shown by the green line.

Was your subwoofer in use at the same time? I am going to guess that it wasn't because the DSP boosted at ~70hz(#4) and ~100hz(#7) which is not what the SLA is good at reproducing. You can tell that the SLA gets going around 150hz because that is where the EQ (#2) is pulled down.

You will also notice that it started with the biggest bump and then worked down to smaller and smaller ones. If you had a sub running, it might free up a couple of bands which could be used elsewhere so that the green line is closer yet to the yellow line.

EDIT: Oopsie, nevermind. A closer look showed that the green line was fairly close to target in the sub range.

As to why there is such a large cut at 4.9k, I'm not sure. Reflection at mic position, maybe?

[kenkenni]

So it's "shaping" the sound based off the reading from the surface reflections? I think
I got you. Nonetheless I can hear a big difference in the mids and highs from before
when I didn't have EQ on them. I used the 3-band EQ on my mixing board and had them
sounding pretty decent, but the DBX made them sound a whole lot "Cleaner" if I had a
word to describe it. Thanks for helping me understand this. I am about 85% done with the
short SLAs and can't wait to add those to the Tall SLA stacks.

As far as the 4.9k setting it may be because I held the mic in hand at that test position and
may of threw off the reading with a slight bit of movement. The room is small and boxy also.

I almost forgot to mention that I did have a powered sub in use. Connected from the second SLA
into the powered sub high-level input with a cross-over set ( on the sub) to 100hz and below.

[ripNdeb]

As far as the 4.9k setting it may be because I held the mic in hand at that test position

That's probably not the anomaly at 4.9k but still, you must not hold the measure mic AND it must be as quiet as possible when doing the RTA. i.e., when I'm listening, is the A/C on? the heater? the refrigerator, etc.
When I RTA at my church, it's very difficult because there are people all around doing their jobs like, working on the video, cleaning, adjusting the lights, talking about what they saw on Facebook......I have to yell, SHUT UP for 30 seconds please. so much fun