Introduction, Design concept, Before you begin

ULTRA-GRAPH PRO GEQ3102

1. INTRODUCTION

Thank you very much for expressing your confidence in BEHRINGER products by purchasing the ULTRA-GRAPH PRO GEQ3102. With the ULTRA-GRAPH PRO you have acquired an extremely musical and flexible 31-band Graphic Equalizer. This 2-channel high-end EQ is based on many years of experience and know-how gathered in filter technology. Our analog and digital equalizers are used throughout the world in renowned studios, sound reinforcement systems and broadcast/TV stations. The BEHRINGER ULTRA-GRAPH PRO was designed to meet the most stringent requirements in terms of operation, sound, specifications and workmanship.

+This manual first describes the terminology used, so that you can fully understand the ULTRA-GRAPH PRO and its functions. Please read the manual carefully and keep it for future reference.

1.1 The design concept

The philosophy behind BEHRINGER products guarantees a no-compromise circuit design and employs the best choice of components. The operational amplifiers which are used in the ULTRA-GRAPH PRO, are exceptional. They boast extreme linearity and very low distortion characteristics. To complement this design the choice of components includes high tolerance resistors and capacitors, detent potentiometers and several other stringently selected elements.

The ULTRA-GRAPH PRO uses SMD technology (Surface Mounted Device). These subminiature components adapted from aerospace technology allow for an extreme packing density to further improve the overall reliability. Additionally, the unit is manufactured in compliance with the ISO9000 certified management system.

Fail-safe relays have been incorporated into the design of the BEHRINGER ULTRA-GRAPH PRO. These automatically and silently bypass the unit in the event of power supply disconnection or failure. These relays are also active at power-on to isolate the unit from potentially damaging power-on thump.

1.2 Before you begin

Your BEHRINGER ULTRA-GRAPH PRO was carefully packed in the factory and the packaging is designed to protect the unit from rough handling. Nevertheless, we recommend that you carefully examine the packaging and its contents for any signs of physical damage, which may have occurred during transit.

+If the unit is damaged, please do not return it to BEHRINGER, but notify your dealer and the shipping company immediately, otherwise claims for damage or replacement may not be granted. Shipping claims must be made by the consignee.

The BEHRINGER ULTRA-GRAPH PRO fits into two standard 19" rack units of space. Please allow at least an additional 4" depth for the connectors on the back panel.

Be sure that there is enough space around the unit for cooling and please do not place the ULTRA-GRAPH PRO on high temperature devices such as power amplifiers etc. to avoid overheating.

+Before you connect your ULTRA-GRAPH PRO to the mains, please make sure that your local voltage matches the voltage required by the unit!

The mains connection of the ULTRA-GRAPH PRO is made by using the enclosed mains cable and a standard IEC receptacle. It meets all of the international safety certification requirements.

+Please make sure that all units have a proper ground connection. For your own safety, never remove or disable the ground conductor of the unit or of the AC power cable.

As standard, the BEHRINGER ULTRA-GRAPH PRO is installed with electronically servo-balanced inputs and outputs. The circuit design features automatic hum rejection for balanced signals, permitting trouble-free operation even at the highest operating levels. Externally induced power-line hum, etc. is thus suppressed effectively. The automatic servo function recognizes the presence of unbalanced connectors and adjusts the nominal level internally to avoid level differences between the input and output signals (6 dB correction).

6	1. INTRODUCTION

GEQ3102 specifications

The Behringer GEQ3102 is a powerful 31-band graphic equalizer known for its exceptional performance and versatility, making it an ideal tool for sound engineers, musicians, and audio enthusiasts alike. Designed to provide precise control over audio frequencies, this graphic equalizer features two separate channels, allowing for comprehensive sound shaping in a variety of settings such as live performances, studio recordings, and installations.

One of the standout features of the GEQ3102 is its 31 bands of equalization. Each band operates at 1/3-octave intervals, spanning a frequency range from 20 Hz to 20 kHz. This extensive range enables users to fine-tune audio signals with remarkable detail. The equalizer provides a 12 dB boost or cut per band, allowing for substantial adjustments in frequency response to tailor the sound to the specific needs of each environment.

In addition to its impressive frequency handling, the GEQ3102 incorporates high-quality components to ensure clean and transparent audio. The use of low-noise op-amps and precision resistors minimizes distortion and colorations, delivering true sound reproduction. The equalizer is built on a robust chassis, capable of enduring the rigors of touring and live sound applications.

Another important characteristic of the GEQ3102 is its performance-enhancing technologies, which include boost/cut faders and a bypass switch. The faders allow users to make quick and intuitive adjustments, while the bypass function enables instant comparison between the equalized and unprocessed audio. This feature is especially useful for evaluating the impact of adjustments and ensuring the desired sound.

Furthermore, the GEQ3102 is designed with flexible connectivity options, including balanced XLR and TRS inputs and outputs. This ensures compatibility with a wide range of audio equipment, enhancing the versatility of the unit. Additionally, the graphic equalizer features LED level indicators for each channel, offering real-time monitoring of the signal level and ensuring optimal performance.

In summary, the Behringer GEQ3102 is an excellent choice for anyone seeking a reliable and effective graphic equalizer. With its extensive 31-band range, high-quality construction, and user-friendly design, it provides the necessary tools to shape sound accurately and effectively, making it a staple in any audio professional's toolkit. Whether for live sound reinforcement or studio applications, the GEQ3102 is sure to deliver exceptional audio performance.