I took a DR250 outside and RTA'ed my system again.I actually saved 2 different settings.The first measurement i took,anything greater than -6DB i raised to -6DB,anything greater than +6DB i brought down to +6DB,Then i went into the utility menu and set the gain offset to -6DB,from what i understand that way the signal will never clip in the area's that have 6 DB boosts (?).
I also saved a RTA measurement just as it measured with some +/-7DB and +/- 9DB dips and peaks.I plan to compare the 2 saved measurements and see which one i like the best.
Is there any benefit to using the -6DB gain offset i'm using in the first measurement ?
DEQ 2496 RTA Measurements
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- Location: Detroit,Michigan
DEQ 2496 RTA Measurements
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's
Re: DEQ 2496 RTA Measurements
So which setting sounded better?
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!
Re: DEQ 2496 RTA Measurements
Where you are testing makes a HUGE difference, too. Ignore anything below 100Hz, and be at least 50 feet away from anything. If you are having +/- 12dB swings, there is something going on.
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice
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- Location: Ilfracombe Queensland Australia
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Re: DEQ 2496 RTA Measurements
Umm please someone correct me if I'm wrong.
When you alter peaks and dips by + or - 6dB you are basically heading to a flat response.
If you then alter gain to -6dB all you are doing is reducing output to the DCX by +6dB
I did much the same (ie "mirror image" the SPL chart).
I didn't alter the gain.
I actually find it quite difficult to set up mixer structure to just below clipping and then get clipping in the DEQ. The odd clip every so often isn't a problem.
What's more important is not having clipping occurring a lot on the DCX...
When you alter peaks and dips by + or - 6dB you are basically heading to a flat response.
If you then alter gain to -6dB all you are doing is reducing output to the DCX by +6dB
I did much the same (ie "mirror image" the SPL chart).
I didn't alter the gain.
I actually find it quite difficult to set up mixer structure to just below clipping and then get clipping in the DEQ. The odd clip every so often isn't a problem.
What's more important is not having clipping occurring a lot on the DCX...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...
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- Posts: 823
- Joined: Tue Dec 15, 2009 6:08 pm
- Location: Detroit,Michigan
Re: DEQ 2496 RTA Measurements
the-6/+6 sounds better.I agree DJPhatman,and i know what it is.I have a large backyard but when i took that measurement i had the cabs back about 25-30 ft.from the back of my house.I have an even bigger field across the street from me.If i can finish my roof early enough tomorrow im gonna take a cab across the street in the field and measure.
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's
- Bill Fitzmaurice
- Site Admin
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- Joined: Tue May 02, 2006 5:59 pm
Re: DEQ 2496 RTA Measurements
I wouldn't invest a lot of time measuring them in a field, unless that's where you're using them. The purpose of EQ is to get the best sound possible in the room where you're using them, and every room is different.djtrumptight wrote:If i can finish my roof early enough tomorrow im gonna take a cab across the street in the field and measure.
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- Posts: 823
- Joined: Tue Dec 15, 2009 6:08 pm
- Location: Detroit,Michigan
Re: DEQ 2496 RTA Measurements
I now have a DEQ for both of my systems so i will be using the measurement mic from now on.Bill Fitzmaurice wrote:I wouldn't invest a lot of time measuring them in a field, unless that's where you're using them. The purpose of EQ is to get the best sound possible in the room where you're using them, and every room is different.djtrumptight wrote:If i can finish my roof early enough tomorrow im gonna take a cab across the street in the field and measure.
Built:
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's
2 Autotuba's MCM 55 2421
8 T48's 24"wide 3015 LF
2 DR 250's melded Deltalite II 2510
2 DR 250's flat Deltalite II 2510
2 SLA HT systems
1 Table Tuba Dayton DCS 255-4
2 T 39's 20" wide 3012 LF
1 T-18 13" wide MCM 55 2421
2 SLA Pro's