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#69229 - 02/05/09 09:33 PM Behringer Ultracurve Pro 8024 for sub EQ?
tg3 Offline
Gunslinger

Registered: 07/03/05
Posts: 30
Loc: Seattle
I'm considering an Ultracurve Pro 8024 for equalizing my 2 subwoofers. I have an amazing room resonance that needs to be tamed if I'm to get good LF response. I ONLY want the 8024 for the subwoofers. So it would be 990 subwoofer out => 8024 => subwoofers. The problem is that the 8024 is a prosound device that needs +21 dBu (~8.7V) for digital full scale. Consumer analog output is more like 1V. Can I just manually adjust the woofer output to +15 dB (max), and crank it back down on the subwoofers? I have a good sound measuring system to monitor the adjustments.

Any insights appreciate.
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#69230 - 02/06/09 01:49 AM Re: Behringer Ultracurve Pro 8024 for sub EQ?
audionirvana Offline
Gunslinger

Registered: 10/24/07
Posts: 43
Loc: Iowa
Hi tg3

I did this when I had dual subs and it worked very well.

You should read this:

http://www.enjoythemusic.com/magazine/equipment/0101/behringer8024.htm

as he explains it better than I can.

And you'll need something like this to get your levels right for a pro unit:

http://www.markertek.com/Product.asp?bas...=&search=0&off=

Worth the effort.

Enjoy.
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#69231 - 02/06/09 01:47 PM Re: Behringer Ultracurve Pro 8024 for sub EQ?
akdrama Offline
Gunslinger

Registered: 06/09/06
Posts: 48
Loc: Maine
That is an awfully expensive DI box. You should be able to get one for around $30. I've got one that converts impedance, 40db attenuator, and a ground lift switch. All for $30. It a Rolls DB25. I use it when I have to run a computer into a mixer or vice versa. Also, the Behringer has a 16db gain within the unit. Both reviews that I read about it didn't mention needing a DI box.

The Ultracurve unit is a nice one. We had one in the theater I worked for. We did a lot of musicals, so it was great for managing a lot of microphones. But I don't suspect you'll be producing musicals in your house. It has a lot capabilities and can give you some flexibility in the future.

Here is one other review with any interesting perspective of the units depth of stage....

Audiophilia Review
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Outlaw 990/7125/ATI 150; Mirage OM-5 Mains,OM-C2Cntr,OM-7 Sides,OM-9 rears; Boston Acoustics P1000 Sub; Sony NC555ES CDP; Panasonic 52" plasma, Sony 34" XBR CRT; Grant Fidelity B-283 Tube Buffer; Belkin Pure AV P60

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#69232 - 02/06/09 03:38 PM Re: Behringer Ultracurve Pro 8024 for sub EQ?
Altec Offline
Desperado

Registered: 01/06/08
Posts: 334
You probably don't even need the converter box - just wire the XLRs as unbalanced.

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#69233 - 02/06/09 05:53 PM Re: Behringer Ultracurve Pro 8024 for sub EQ?
akdrama Offline
Gunslinger

Registered: 06/09/06
Posts: 48
Loc: Maine
Hi Altec,

I was wondering if you would chime in, and wondering whether you used any equalization in your system.

AK
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Outlaw 990/7125/ATI 150; Mirage OM-5 Mains,OM-C2Cntr,OM-7 Sides,OM-9 rears; Boston Acoustics P1000 Sub; Sony NC555ES CDP; Panasonic 52" plasma, Sony 34" XBR CRT; Grant Fidelity B-283 Tube Buffer; Belkin Pure AV P60

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#69234 - 02/06/09 07:13 PM Re: Behringer Ultracurve Pro 8024 for sub EQ?
Altec Offline
Desperado

Registered: 01/06/08
Posts: 334
My system uses active crossovers, so yes, I use equalization to replace the "voicing" which would normally be performed by the passive crossover network in a conventional speaker.

The equalizers I use are line level units I designed around the specific frequencies I need to accomplish the tuning I want. They use passive L-C-R filtering. The only commercial EQ is a 1/3rd octave Behringer analog unit I use only for the subwoofers.

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#69235 - 02/08/09 08:30 AM Re: Behringer Ultracurve Pro 8024 for sub EQ?
tg3 Offline
Gunslinger

Registered: 07/03/05
Posts: 30
Loc: Seattle
Thanks for the responses.

After nearly a full day with the 990, 8024 and my measuring system, I was able to tame a truly awesome 50 Hz room resonance. Deep base response is much improved.
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It could be worse.

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#69236 - 02/08/09 04:00 PM Re: Behringer Ultracurve Pro 8024 for sub EQ?
akdrama Offline
Gunslinger

Registered: 06/09/06
Posts: 48
Loc: Maine
Glad to hear the Behringer's working out for you tg3. It's a pretty useful component.
_________________________
Outlaw 990/7125/ATI 150; Mirage OM-5 Mains,OM-C2Cntr,OM-7 Sides,OM-9 rears; Boston Acoustics P1000 Sub; Sony NC555ES CDP; Panasonic 52" plasma, Sony 34" XBR CRT; Grant Fidelity B-283 Tube Buffer; Belkin Pure AV P60

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