Behringer FBQ6200-HD Equalizer

31-Band Stereo Graphic Equalizer for Live and Studio Sound

The Behringer FBQ6200HD Ultragraph Pro is a high-definition 31-band stereo graphic equalizer built for live sound and studio work. Two channels of 31 bands deliver 62 bands of tonal control, while the integrated FBQ Feedback Detection System pinpoints problem frequencies in real time. Built around 4580 dual operational amplifiers and a Planet Earth switching power supply, the unit provides ultra-low-noise performance with strong transient response. The 3U chassis weighs only 2.3 kg, light enough for mobile rigs yet rugged for permanent installs.

What Sets This Equalizer Apart in Its Class

Unlike most graphic EQs in this tier, the FBQ6200HD combines four system-tuning tools in one chassis: FBQ feedback detection, a switchable limiter per channel, a built-in pink-noise generator, and a dedicated subwoofer output with adjustable crossover. Relay-controlled hard-bypass with auto-bypass during power failure protects downstream gear if mains drop out.

Equalization Architecture and Feedback Detection

The 31-band-per-channel layout covers the full audio range with ISO-standard frequencies, and the switchable ±6 dB / ±12 dB range lets engineers pick between fine surgical cuts or broader tonal shaping. Long-throw 45 mm faders provide the resolution needed to land on exact values during room tuning.

• Frequency Bands: 31 per channel (62 total stereo) — full ISO-standard coverage of the audible spectrum
• Fader Travel: 45 mm long-throw — high resolution for precise room-correction cuts and boosts
• FBQ Feedback Detection: LED on offending fader — visual feedback identification without manual sweeping

Built-In Limiter and Pink-Noise Spectrum Analysis

Independent switchable limiters per channel with separate Threshold controls and gain-reduction meters protect amplifiers and drivers from overload. The integrated pink-noise generator enables the unit to function as a highly accurate audio spectrum analyzer when used with a measurement mic.

• Limiter: Switchable per channel with Threshold control and gain-reduction meter — protects downstream amps from clipping during loud passages
• Pink-Noise Generator: Built-in, switchable — turns the EQ into a spectrum analyzer for room-response measurement
• Op-Amps: 4580 dual operational amplifiers — low-noise signal path across the full audio spectrum

I/O, Subwoofer Crossover, and Rack Integration

Servo-balanced inputs and outputs on gold-plated XLR and 1/4" TRS connectors handle balanced and unbalanced signals. A dedicated mono subwoofer XLR output with adjustable 30–200 Hz crossover feeds a sub amp directly, while sweepable high-cut and low-cut filters per channel remove rumble, hiss, and hum before they consume amp headroom.

• Inputs/Outputs: 2× XLR + 2× 1/4" TRS per channel, gold-plated — servo-balanced for noise rejection over long cable runs
• Subwoofer Output: XLR mono with 30–200 Hz adjustable crossover — direct feed to a sub amp without extra hardware
• Filters: Sweepable high-cut and low-cut per channel — removes rumble, hiss, and hum before EQ
• Dimensions: 133 × 483 × 138 mm (3U rack) — fits standard 19" equipment racks
• Weight: 2.3 kg — light enough for touring racks and mobile PA carts