Behringer GEQ3102 Ultra Graph Pro 31-Band EQ

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Sound improvement in post-production and all recording situations. 31-band stereo graphic equalizer for live and studio applications. Extremely low-noise operational amplifiers for outstanding audio quality.

Overview

Perfect Sound with 2 x 31 Bands
Behringer's new Ultra-Graph Pro is a high-end, 2-channel graphic equalizer with flexible signal processing capabilities. This professional sound-shaping tool can be used at live venues for PA optimization or in the studio to process individual signals or your stereo mix. The GEQ3102 is also perfect for feedback removal or placing vocals and instruments in the mix. Last but not least, the Ultra-Graph Pro is a useful tool for mastering.

Direct Access to All Controls
The Behringer Ultra-Graph Pro enables you to directly access all functions, allowing lightning-fast adjustments and precise setting in any situation. All controls are illuminated and two 12-segment LED displays can be set to monitor input or output level, helping you to prevent overloading. The sweepable high-pass and low-pass filters allow "pre-graphic" trimming of the frequency range. After that, you can get to the heart of the matter with 31 EQ faders per channel for extensive processing between 20 Hz and 20 kHz. A Range button is included, which switches the maximum boost/attenuation of all bands between +/-12 dB and +/-6 dB. For quick comparison between original and processed signal, the entire EQ section can be switch on and off via the relay-controlled Audio IN/OUT button.

Live on Stage: The Ultra-Graph Pro's Natural Environment
Club, stadium, and concert hall acoustics can vary immensely depending upon their construction. Even with the best PA system, an engineer often has to… read more fight hard against poor clarity, dull sound and ill-defined signal positioning. The Ultra-Graph Pro offers invaluable assistance in adapting the program material to the current room acoustics. With the GEQ3102, you can achieve dramatically improvements in signal presence and overall audio quality, optimize your system's efficiency, and give the audience the kind of sound they expect. Feedback loops in the monitor system are a breeze to conquer. Just zap the feedback frequency with maximum attenuation and that feedback is history. Extremely low frequencies are often cut to avoid low-end feedback, which leads to muddy sound. Used in the monitor system, the Ultra-Graph Pro cleans up your monitor sound, making it more transparent and giving you considerably more headroom. Go ahead and crank up that aux send master. By the way: if you should ever be surprised by a power-down, the GEQ3102 is automatically switched to bypass mode. The same relays that take care of this also provide a switch-on delay to protect your system against dangerous switching noises.

Ultra-Graph Pro: You're in Control of Your Music's Sound Spectrum
You want a differentiated audio image for your production? With the Ultra-Graph Pro, you've got extensive signal processing capabilities. Boosting or attenuating certain frequencies can accent voices and instruments in the mix. Next to this classic application, equalizers are often used today for creative sound design: with extreme settings you can conjure up wild effects that get your audience's attention. A further application is mastering. Sometimes a mix sounds a bit out of whack. Using the GEQ3102 in the sum enables you to manipulate a finished mix by correcting frequency imbalances until the mix sounds homogenous. No matter which application, the Ultra-Graph Pro helps you reach your goal: that same professional sound you hear out of top recording studios.
The Ultra-Graph Pro GEQ3102: perfect sound with 2 x 31 bands!

Features
31-band stereo graphic equalizer for live and studio applications
Sound improvement in post-production and all recording situations
Sweep-able high-pass and low-pass filters remove unwanted signal portions, i.e. impact noise, tape hiss, etc.
Servo-balanced inputs and outputs with gold-plated XLR and 1/4" TRS connectors
Relay-controlled hard bypass switch with auto bypass function (safety relay)
Extremely low-noise operational amplifiers for outstanding audio quality
Illuminated high-precision Alps faders
12-segment LED display for input or output level
High-quality components and rugged construction for long life
Manufactured under ISO9000 certified management system

Specs

Audio Input
Connectors: XLR and 1/4" jack
Type: RF filtered, servo-balanced input
Impedance: 50 kOhm balanced, 25 kOhm unbalanced
Max. input level: +21 dBu balanced and unbalanced
CMRR typ.: 40 dB, > 53 dB @ 1 kHz

Audio Output
Connectors: XLR and 1/4" jack
Type: electronically servo-balanced output stage
Impedance: 60 Ohms balanced, 30 Ohms unbalanced
Max. output level: +21 dBu balanced and unbalanced

System Specifications
Frequency response: 10 Hz to 35 kHz, +/- 3 dB
Noise: > 92.3 dBu, unweighted, 22 Hz to 22 kHz
THD: 0.004 % typ. @ +4 dBu, 1 kHz, Gain 1
Crosstalk: < -85 dB, 22 Hz to 22 kHz

Roll-Off Filter Section
Type: 12 dB/oct., butterworth
Input variable: (-15 dB to +15 dB)
Low cut variable: (10 Hz to 400 Hz)
High cut variable: (2.5 kHz to 30 kHz)

Graphic Equalizer
Type: analog 1/3-octave equalizer
Frequency range: 20 Hz to 20 kHz in 31 1/3-octave bands (ISO frequencies)
Bandwidth: 1/3 octave
Control range: +/- 6 dB or +/- 12 dB (switchable)

Function Switches
Audio in/out: switch to bypass the equalizer functions
I/O meter in/out: switches the meter display from input to output
Range: shift of the maximum cut/boost range for all 31 bands

Indicators
Input/output level: 12-segment LED display: -30/-24/-18/-12/-6/-3/0/+3/+6/+9/+12/+18 dB
Function switch: LED indicator for every switch

Power Supply
Mains voltages: USA/Canada 120 V ~, 60 Hz
U.K./Australia 240 V ~, 50 Hz
Europe 230 V ~, 50 Hz
General export model 100 - 120 V ~, 200 - 240 V ~, 50 - 60 Hz
Power consumption: max. 20 Watts
Fuse: 100 - 120 V ~: T 400 mA H
200 - 240 V ~: T 200 mA H
Mains connection: standard IEC receptacle

Physical
Dimension: 3-1/2 x 19 x 5.3 in. (89 x 482.6 x 135 mm), approximately

Weight: 2.5 kg, approximately

Documents and Manuals

For support or warranty questions, please contact the manufacturer:
Web: https://www.behringer.com/service.html

Reviews

(48 ratings)

Submitted March 11, 2004 by a customer from hotmail.com

"Well, if it worked, and if the company would have not #$%@ed up from the beginning..."

Overall:

(see rating details)

Overall, I got 2 shows worth of use out of it, so if $75 a show for an EQ is a good deal, this was a steal.

Sound
This product sounded great...until one of the channels started to randomly cut in and out during a show, almost frying an amp and my right pair of speakers.

Features
I chose this product because it had good input/output options, high/low pass filters, and enough faders to cover the rest of the audio spectrum.

Quality
The first one I received, the lights in the faders were all dead, so I sent it back and got another one. This one was fine...for 2 shows, then the third show channel 2 (my right speakers) started clipping in and out at random intervals, completely unpredictable. As mentioned before, I almost fryed an amp and my right pair of speakers. I called behringer to get the thing RMA'd, but they had me send it to "the good guys" (yes, that is the name of the 'authorized' service center). 6 months later I received the EQ back. After numerous delays, they said they replaced some capacitor on the inside, and checked the soldering on the inside as well. 3 months later...just out of warranty, the darn thing had the exact same problems, no help from behringer YEAH! :)

Value
If it worked, it would have been worth it, but since I got the shaft, I have an expensive piece of junk, worth less than a bag of aluminum cans for recycling.

Manufacturer… read more Support
If the darn thing stops working, demand a refund or a new replacement with a new warranty. I lost $150 on this piece of crap, don't make the same mistake I did.

The Wow Factor
There is no appeal in a piece of equipment that doesn't work.

Musical Style:
Rock, acoustic sets, etc.

6 of 7 people (86%) people found this review helpful. Did you?