BEHRINGER ULTRAGRAPH PRO FBQ3102HD Equalizer

See which fader is feeding back.

The service starts, a lectern mic rings, and every head turns to the sound desk. Hunting for the band by ear takes time you do not have. This stereo graphic equaliser points you to it, then lets you shape the rest.

The FBQ system lights the problem band

Press FBQ and the frequency that evokes feedback shows as a lit fader LED. All other LEDs are toned down. Lower that fader a little until the feedback stops and the LED goes out.

31 bands and two sweepable cut filters

It is an analogue 31-band equaliser with 1/3-octave bands. RANGE switches the faders between ±12 dB and ±6 dB. LOW CUT sweeps from 10 Hz to 400 Hz, and HIGH CUT from 2.5 kHz to 30 kHz. INPUT boosts or cuts the level by up to 15 dB.

A sub output and a hard bypass

SUB OUT is a balanced XLR connector carrying a summed mono signal. X-OVER FREQ sets its crossover between 30 Hz and 200 Hz. On this model, AUDIO IN/OUT is a relay-driven hard bypass for A/B checks. When the unit is off, inputs and outputs stay connected. Main inputs and outputs are servo-balanced XLR and ¼" TRS.

Features

• Professional 31-band stereo graphic equalizer for live and studio applications
• Ultra-low noise 4580 operational amplifiers for highest signal integrity
• Dedicated mono subwoofer output with adjustable crossover frequency
• Additional sweepable high and low-cut filters for each channel remove unwanted frequencies, e.g. floor rumble, hiss etc.
• Highly accurate 12-segment LED input/output metering and input gain controls for easy level setting
• Relay-controlled hard-bypass with an auto-bypass function during power failure (fail-safe relay)
• Servo-balanced inputs and outputs with 1/4" TRS and gold-plated XLR connectors
• Planet Earth switching power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving