Behringer FBQ6200 Manuale Utente

ULTRAGRAPH PRO FBQ6200/FBQ3102/FBQ1502 User Manual

In this chapter we will describe various control elements of your equalizer. 

All controls and connectors are explained in detail, and you will also find useful 

hints on how to best use them. Since the three equalizers in the FBQ series 

are fairly similar, let’s start with the control elements of the FBQ1502 and 

the FBQ3102 that are similar to the control elements found on the FBQ6200. 

The FBQ6200 additionally features extra control elements that will be explained 

in detail later on.

The 

(1) 

INPUT/OUTPUT LEVEL METER lets you keep an eye on the signal level 

in order to avoid distortion. Depending on the position of the I/O METER 

IN/OUT switch 

(2)

, the display shows either the input or the output signal 

(switch depressed) level. When the signal level reaches roughly +18 dB, 

that is, 3 dB below clipping starts to occur, the red CLIP LED lights up.
The level meter on the FBQ1502 displays only the output signal level.
Attention: extreme frequency boosts in connec tion with a high input 

(4) (5)

(3)

(4)

(2)

(1)

(3)

(5)

(6)

(7)

(1)

(6)

(8)

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Fig. 2.1: Front panel control elements of the FBQ3102 (above) and of the FBQ1502 (below)

The 

(2) 

I/O METER IN/OUT switch lets you alternate between displaying the 

input and the output signal level. When the switch is depressed, the output 

signal level is shown. The FBQ1502 does not feature this switch.
When you press the 

(3) 

FBQ switch, the FBQ feedback detection system 

is activated. The frequency (or frequen cies) that evoke feedback is/are 

indicated by means of a lighted fader LED. All other LEDs are toned down. 

Now, simply lower the respective frequency range somewhat until you 

eliminate the feedback and the LED no longer lights up.

The 

(4) 

AUDIO IN/OUT switch is used to enable or disable the entire equalizer 

section. The FBQ1502 does this electronically, while the FBQ3102 and the 

FBQ6200 feature a relay-driven hard bypass function. As long as the switch 

is not depressed or while the equalizer is not powered up, the inputs and the 

outputs are directly connected to one another. The AUDIO IN/OUT switch is 

used to alternate between A and B, i.e. to compare the original unprocessed 

signal with the processed signal.
The 

(5) 

INPUT control is used to adjust the input signal level. You can boost/

attenuate the signal level from +15 to -15 dB.
The 

(6) 

LOW CUT control is used to adjust the lower cut-off frequency of your 

ULTRAGRAPH PRO. The high-pass filter (18 dB/oct.) covers the range between 

10 and 400 Hz, whereby the filter lets the signal pass through unprocessed, 

when the control is in the 10 Hz position.
The FBQ1502 features a switchable high-pass filter (LOW CUT) instead of a 

low cut control, and its cut-off frequency is 25 Hz.
The 

(7) 

HIGH CUT control is used to adjust the upper cut-off frequency of your 

ULTRAGRAPH PRO. The low-pass filter (18 dB/oct.) covers the range between 

2.5 and 30 kHz, whereby the filter lets the signal pass through unprocessed 

when the control is in the 30 kHz position.
Use the high-pass and low-pass filters to define the frequency range 

you wish to process. This provides you with an efficient way to limit the 
bandwidth you work with.
The 

(8) 

RANGE switch lets you alternate between the maximum value 

of lowering/increasing of individual frequencies from 12 dB to 6 dB 

(switch depressed).
These are the 

(9) 

31 SLIDING CONTROLS (FBQ1502: 15 sliding controls per 

channel) for individual frequency bands. When in “0” position, the particular 

frequency range is not processed at all. To boost a frequency range, pull the 

sliding control upward; to attenuate, pull the sliding control downward.
To emphasize a frequency range, you don’t necessarily have to move 

its respective sliding control upward; try lowering surrounding 
frequency ranges instead. This way, you avoid causing the next piece of 
equipment in your sound path to overdrive. You also preserve valuable 
dynamic reserve (“headroom”).
Sliding controls feature LEDs that indicate the signal level of their particular 

frequency ranges through their varying illumination intensity: what better 

way to show critical  frequencies that evoke feedback. How to best use 

your ULTRAGRAPH PRO to detect these critical frequencies is described in 

chapter 3.2.1. 

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(11)

(12)

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Fig. 2.2: Control elements and important information on the rear of the FBQ3102