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Passeq
Important Safety Information ................................................................ 4
Hook Up ........................................................................................ 5
Introduction .................................................................................... 6
Unique Features, Special Features ........................................................... 6
Advantages of Passive Filtering, 72 passive Filters with 120 V Makeup Ampliers,
Filter Types, Single Core Coils, Peak and Shelving Filters ................................... 7
120 V Makeup Ampliers, SPL SUPRA Op-Amps ............................................. 8
Lundahl Transformers, Other Features, Conclusion ......................................... 9
Rear Panel ...................................................................................... 1 0
Rear Panel, XLR Pin Wiring .................................................................... 10
Connections .................................................................................... 11
Power and Signal Connections ................................................................ 11
Operation ...................................................................................... 11
Power, Channel Switches, Layout of Operational Elements,
The most powerful passive EQ system ever made ........................................... 11
One Coil per Filter, one Core per Coil, Allocation of Frequencies,
Frequency Table/per Band .................................................................... 1 2
Table: Allocation of Frequencies .............................................................. 1 3
LF-LMF Cut and LF Boost, MF-MHF Cut and LMF-MHF Boost ................................ 1 4
MHF-HF Cut and HF Boost, HF Boost Q Settings with the Proportional Q Principle,
MHF-HF Cut, Output Control .................................................................. 1 5
Recommendations on using Equalizers ...................................................... 1 6
Basic Approaches and Working Techniques, EQ Yin & Yang ................................. 1 6
First control levels, then apply EQ, First cut, then boost,
Reducing bleed from other instruments or noise outside an instrument‘s
frequency range, Reducing bleed within an Instrument‘s frequency range,
Boosting harmonic frequency levels, Boosting fundamental levels ........................ 1 7
Cutting fundamental levels, Emphasis of an instrument‘s main frequencies,
In the mix—or not?, Splitting frequency bands to reduce masking effects,
Complementary ltering ....................................................................... 1 8
An overview of frequencies and examples for possible processing ........................ 1 9
Classical instruments and their frequencies ................................................. 2 0
The Basics of Frequency Filtering ............................................................ 2 1
Frequency and Energy, Tone and Sound, Sound Correction and Sound Design ........... 2 1
Frequency Filters, Filter Types, Shelf Filters, Peak Filters ................................... 2 2
Bandwidth, Equalizer, Passive EQs, Schematic and block diagrams on passive lters ..... 2 3
Active EQs, Parametric EQs, Graphic EQs .................................................... 2 4
Power Supply .................................................................................. 2 5
Specications ................................................................................. 2 5
Guarantee & Product Registration .......................................................... 2 6
Copy Master: Recall Settings ................................................................. 2 7
Contents