Behringer FEEDBACK DESTROYER FBQ1000 Manuel d'utilisateur télécharger pdf (Page 9)

9 FEEDBACK DESTROYER FBQ1000 User Manual

7.1 Recalling presets

The FEEDBACK DESTROYER has ten presets, which can be overwritten.

Afterpower-up, the unit restores the last preset used. Use the JOG WHEEL to

select another preset. The default preset is located before the rst program.

◊ Please note that the FEEDBACK DESTROYER generally activates the

newly selected presets only after about one second, which is indicated

by a dot in the lower right corner of the DISPLAY. After loading the data,

the FEEDBACK DESTROYER enables the preset and the dot disappears.

This brief interruption of the signal path avoids the direct activation of

each preset, as you scroll through the preset list with the Jog Wheel.

Thus, the FBQ1000 makes sure that no “unwanted” programs are

loaded unintentionally. Additionally, you can rotate the Jog Wheel at

high speed and still have the time to specifically select the preset of

your choice, instead of any of its “neighbors”.

7. 2 Selecting the lter operating mode

Each lter mode has two letters assigned to it, which appear in the DISPLAY after

pressing the FILTER MODE key. The following display messages are available:

Display Operating mode

OF O

PA Parametric EQ

AU Auto

SI Single-Shot

LO Locked

Tab. 7.1: FEEDBACK DESTROYER lter operating modes

As already mentioned, the operating mode of a lter can be changed as follows:

Press the FILTER SELECT key and specify the lter number (1 through 12) with the

Jog Wheel. Using the two ENGINE keys, you can select the left (ENGINE L) or right

audio channel (ENGINE R), or both at the same time by pressing the two ENGINE

keys simultaneously.

Now, press the FILTER MODE key and select the mode of your choice with the

Jog Wheel. The display message “LO” (= “Locked”) informs you that a lter set

to Single-Shot mode before is already suppressing feedback. As described in

chapter 6.4, this lter is set to Locked mode automatically. You can unlock such

a lter by switching it back to Single-Shot mode. As soon as a new feedback

frequency will be found, the FEEDBACK DESTROYER switches the lter from the

old frequency to the new one. If you leave Auto or Single-Shot mode and enter

parametric EQ mode, the lter’s parameter settings remain unchanged.

◊ To avoid inadvertent changing of filter modes, the filter mode selection

takes place after about one second, which is indicated by a dot in the

lower right corner of the Display.

◊ Press the FILTER MODE and GAIN keys at the same time, and use the JOG

WHEEL to adjust the feedback threshold (= feedback sensitivity) within

a range from -3 to -9 dB.

7. 3 Editing lter parameters

◊ Remember: Your FBQ1000 has ten pre-configured user presets,

each comprising 12 filters per channel. Each individual filter can be

selected in any of the four operating modes!

◊ However, the “Locked” mode cannot be selected directly: when a filter

which was selected as “Single-Shot” detects a feedback frequency,

the filter is automatically set and “locked”, i.e. the filter is locked to the

problem frequency and “keeps an eye” on it.

◊ In Single-Shot and Auto modes, the filter parameter cannot be edited

but only displayed. Editing can be done in Parametric EQ mode only:

To change lter settings manually, the respective lter must be set to

Parametric EQ mode. Press and keep the FILTER MODE key for about one second.

Now, you can adapt the frequency after pressing FREQUENCY. Depending on

the preset frequency, either the “Hz” or the “kHz” indicator to the right of the

DISPLAY lights up. For example, when the lter is set to 160 Hz, the numeric

Display will read the value and the “Hz” indicator lights up. To raise the frequency

to 2,700 Hz, turn the Jog Wheel clockwise until the ISO frequency (2.5 kHz;

seeTab. 11.2) next to this value appears in the Display and the “kHz” indicator

lights up. The FINE key allows you to ne tune the chosen standard ISO frequency

within a tuning range of 1/3 octave (in 1/60-octave steps). The mathematical

proportion between the displayed value and the absolute frequency, as well

as a guide to nd the desired frequency quickly, are listed in the appendix

(chapter11.1 – frequency chart). The bandwidth of the lter (quality) can be

adjusted by selecting the BANDWIDTH key. The adjustable bandwidth ranges

from 2 octaves down to 1/60 octave. By pressing the GAIN key, it is possible to set

the desired boost or cut of the selected frequency. A “+” or “-” signals that the

level is being increased or decreased respectively.

◊ Filters in Single-Shot or Auto mode can be transformed into parametric

filters with the same frequency, quality and 0 dB gain by pressing the

FILTER MODE key for about one second. Only then will it be possible to

edit the filter parameters.

7.4 Storing presets

Whenever you edit a preset, the LED in the STORE key starts ashing.

Basically,all edits in Parametric EQ mode and the lter deactivation in O

mode can be stored. Filters in Single-Shot or Auto mode adjust and store their

parameters automatically. However, these data will get lost when you switch

o the unit. To avoid that, please write the edited setting to a preset before you

switch the FBQ1000 o:

Press the STORE key once, so that the DISPLAY starts ashing. If you wish to

preserve the original preset, use the Jog Wheel to select another preset number,

which can be overwritten. Then, press STORE again to save your edits to the

selected preset. If you wish to overwrite the original preset, simply press the

STORE key twice after editing, so as to save all edits to the same preset.

7. 5 Restoring the factory presets

Press and keep the FILTER SELECT and STORE keys pressed before you switch on

the FEEDBACK DESTROYER. After power-up keep the switches pressed for another

second. The preset numbers are counted up and the presets are reset to their

original default values.

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Behringer FEEDBACK DESTROYER FBQ1000 Manuel d'utilisateur Page 9

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