6
TABLE OF CONTENT
1. INTRODUCTION ...................................................................................................................... 7
1.1 Technical background .................................................................................................................... 7
1.1.1 Feedback as a physical phenomenon .................................................................................. 9
1.1.2 Graphic equalizers ............................................................................................................. 10
1.1.3 Parametric equalizers ......................................................................................................... 10
1.2 The FEEDBACK DESTROYER .................................................................................................... 10
2. THE CONCEPT ...................................................................................................................... 12
2.1 The quality of components and circuit .......................................................................................... 12
2.2 Two independent channels ........................................................................................................... 12
3. INSTALLATION ..................................................................................................................... 13
3.1 Rack mounting ............................................................................................................................. 13
3.2 Mains voltage ............................................................................................................................... 13
3.3 Audio connections ........................................................................................................................ 13
3.4 Selecting the operating level ......................................................................................................... 14
4. CONTROL ELEMENTS ......................................................................................................... 15
4.1 Keys for parameter selection / jog wheel (rotary control) .............................................................. 15
4.2 Display and indicators .................................................................................................................. 16
4.3 Rear control elements .................................................................................................................. 16
5. OPERATION .......................................................................................................................... 18
5.1 Activating/deactivating the filters .................................................................................................. 18
5.2 Manual filters / parametric equalizer ............................................................................................. 18
5.3 Automatic filters ............................................................................................................................ 18
5.4 Working with programs ................................................................................................................. 18
5.4.1 Recalling programs ............................................................................................................ 19
5.4.2 Choice of mode .................................................................................................................. 19
5.4.3 Editing filter parameters ...................................................................................................... 19
5.4.4 Storing programs ................................................................................................................ 20
5.5 MIDI control .................................................................................................................................. 20
5.6 The basics of digital signal processing ......................................................................................... 21
6. APPLICATIONS ..................................................................................................................... 24
6.1 Using the FEEDBACK DESTROYER in the monitor path ............................................................. 24
6.2 Using the FEEDBACK DESTROYER in the main mix bus ........................................................... 24
6.3 Using the FEEDBACK DESTROYER in single channels and sub-groups .................................... 25
6.4 Using the FEEDBACK DESTROYER in a studio environment ..................................................... 26
6.5 Using the FEEDBACK DESTROYER as an effects device .......................................................... 26
6.6 Special remarks ............................................................................................................................ 26
6.6.1 Level setting ....................................................................................................................... 26
6.6.2 Digital overflow ................................................................................................................... 27
6.6.3 “Tuning in” P.A. and monitor systems ................................................................................. 27
7. FREQUENCY CHART ........................................................................................................... 28
8. MIDI IMPLEMENTATION ...................................................................................................... 29
9. SPECIFICATIONS ................................................................................................................. 30
10. WARRANTY ......................................................................................................................... 31
