EQ Settings for DR250?

Message

David Carter · #1 Post by **David Carter** » Wed Feb 13, 2008 8:51 am

The EQ settings I've been using for my DR250's so far have been based on Dave Perry's DR280 EQ curve found here:

http://billfitzmaurice.com/phpBB2/viewtopic.php?t=2639

Dave had talked recently about gettings some updated pics of his more recent adjustments to those settings, but now that he's sold off the DR280's, I don't imagine we'll be seeing those.

Who's got some info they could share about EQ settings that have worked for you with DR250's?

Chris_Allen · #2 Post by **Chris_Allen** » Wed Feb 13, 2008 1:27 pm

Dave mentioned that he still had a couple of gigs to do with his rig, so I don't think DNZ is the proud owner yet.

Chris.

David Carter · #3 Post by **David Carter** » Wed Feb 13, 2008 1:48 pm

Chris_Allen wrote:Dave mentioned that he still had a couple of gigs to do with his rig, so I don't think DNZ is the proud owner yet.

Ah, I missed that part of the discussion. Well, Dave, if you still have the old rig, I'd love a snapshot of your EQ curve before you hand it over.

Tim A · #4 Post by **Tim A** » Wed Feb 13, 2008 1:50 pm

Dave: Don't know if you've ever tried this before, but it's fun and can be a learning experience. I know I learned a lot more about identifying certain ranges by ear.

Anyway, you can get a reasonably decent EQ by using the SPL chart. Here's the one with the melded array. I drew a red line at about 105dB. Using that as a baseline, adjust sliders an appropriate amount to get the response flat. Ie: 150-175 Hz is about 2dB hot, so bring them down 2dB on the EQ. 250 Hz is about 2.5-3dB light, so bring it up that amount. After you get it flattened out based on the chart, you can make final tweaks by ear.

You don't have to use 105, I just put a line there for reference. Do try and pick a center point so you're boosting some and cutting some.

It's not perfect but you can get pretty close.

David Carter · #5 Post by **David Carter** » Wed Feb 13, 2008 1:53 pm

Tim Ard wrote:Dave: Don't know if you've ever tried this before, but it's fun and can be a learning experience. I know I learned a lot more about identifying certain ranges by ear.

Anyway, you can get a reasonably decent EQ by using the SPL chart. Here's the one with the melded array. I drew a red line at about 105dB. Using that as a baseline, adjust sliders an appropriate amount to get the response flat. Ie:

Thanks, Tim. I hadn't ever thought of that before. Sounds like a good learning exercise. I'll give it a shot sometime this week.

LelandCrooks · #6 Post by **LelandCrooks** » Wed Feb 13, 2008 1:53 pm

It works too!

Tim A · #7 Post by **Tim A** » Wed Feb 13, 2008 1:55 pm

LOL! Read the rest of my post, I had to post the pic and look at the chart to give examples! I shoulda wrote them down first, but noooo!

DAVID_L_PERRY · #8 Post by **DAVID_L_PERRY** » Wed Feb 13, 2008 2:24 pm

David Carter wrote: [Dave, if you still have the old rig, I'd love a snapshot of your EQ curve before you hand it over.

I hand the cabs over to Dave next Tuesday, but the graph is stored in my Ultracurve anyway, and thats not going anywhere. I will update the post...promise...

Dave

Chris_Allen · #9 Post by **Chris_Allen** » Thu Feb 14, 2008 2:44 am

There are just too many bloody Dave's on this forum.....

Chris.

James R · #10 Post by **James R** » Thu Feb 14, 2008 4:58 am

Cheech and Chong

Thu Feb 14, 2008 8:46 am

David Carter wrote:
Tim Ard wrote:Dave: Don't know if you've ever tried this before, but it's fun and can be a learning experience. I know I learned a lot more about identifying certain ranges by ear.

Anyway, you can get a reasonably decent EQ by using the SPL chart. Here's the one with the melded array. I drew a red line at about 105dB. Using that as a baseline, adjust sliders an appropriate amount to get the response flat. Ie:

Thanks, Tim. I hadn't ever thought of that before. Sounds like a good learning exercise. I'll give it a shot sometime this week.

You're just doing manually what the auto RTA does, which is to measure the cab response and then adjust the sliders accordingly.

David Carter · #12 Post by **David Carter** » Thu Feb 14, 2008 1:22 pm

Tim Ard wrote:

* EQ is set to +/-6db
* As discussed previously in another thread, I tried to roll off the low end to protect the driver.
* I didn't drop 8K and 10K as much as the curve above called for because I liked the sound better.
*I left 20K flat instead of boosting it because I didn't want to chance blowing anything at higher levels and I couldn't hear the difference anyway.

I like the results very much!

Comments or suggestions welcome!

Tim A · #13 Post by **Tim A** » Thu Feb 14, 2008 1:27 pm

David Carter wrote: I left 20K flat instead of boosting it because I....couldn't hear the difference anyway.

Nor could anyone you know.

It's a pretty good system for EQing when you don't have an RTA. I learned it...

right here!

To quote our favorite Kiwi: "It works a treat!"

Alan Star · #14 Post by **Alan Star** » Thu Feb 14, 2008 6:47 pm

Tim Ard wrote:
David Carter wrote: I left 20K flat instead of boosting it because I....couldn't hear the difference anyway.
Nor could anyone you know.

I like to boost at 20k, even though you may not noticibly hear it straight away, I think it can add a subtle crispness to the sound.

Thu Feb 14, 2008 7:20 pm

alanstar wrote:
Tim Ard wrote:
David Carter wrote: I left 20K flat instead of boosting it because I....couldn't hear the difference anyway.
Nor could anyone you know.
I like to boost at 20k, even though you may not noticibly hear it straight away, I think it can add a subtle crispness to the sound.

With live sound I kill 20kHz entirely, as you can't hear it anyway and most sources, both instruments and mics, don't go that high. For that matter I've never done a concert RTA that showed significant content above 12.5kHz.