Behringer SYSTEM 15 Quick Start Guide - Page 9

16 SYSTEM 15 Percussive Lead Modules Your System 15 has two rows of modules Quick Start Guide 17 (1) (2) (3) (4) (5) (6) (7) (8) To mixer/ampli er/DAW A simple, two oscillator lead sound with a hard front end and timbral development which is also suitable for melodic sequencing Voltage Control (pitch) MIDI Out Top Row (1) 914 Fixed Filter Bank (FFB). (2) 923 Filters and Noise Sources. (3) 904B High Pass Filter (HPF (4) 904A Low Pass Filter (LPF). (5) & (6) 902 Voltage Controlled Amplifiers (VCA). (7) & (8) 911 Envelope Generators (EG). Bottom Row Source External MIDI Keyboard - MIDI Out CM1A CV Out via Multiple 921A Frequency Output Audio Destination CM1A MIDI Interface MIDI In 921A Frequency Input 921B Frequency Link (in series) 1st 921B Triangle wave Output 2nd 921B Sawtooth wave Output CP3A-M Output 904A Signal Output 902 Signal Output Voltage Control (Amplitude) CM1A s-trigger out via Multiple 1st 911 Output CP3A-M mixer Input 1 CP3A-M mixer Input 2 904A Signal Input 902 VCA Your Mixer/Amplifier/DAW 2 x 911 s-trigger Input 902 Control Input (1) (2) (3) (4) (5) (6) (7) (8) (1) 921A Oscillator Driver. (2) & (3) 921B Voltage Controlled Oscillators (VCO). (4) 921 Voltage Controlled Oscillator (VCO/LFO). Voltage Control (Modulation) (5) CP3A - M 921 Sine Wave Out 2nd 911 Output 904A Control Input 904A Control Input This sound uses two 921B VCOs, with different waveforms, and sounds best if one is slightly detuned. They both feed the 904A LPF, and their relative levels can be adjusted with the CP3A-M mixer as required. The 904A's output is fed to a 902 VCA, whose amplitude is controlled by the 1st 911 EG To obtain the percussive edge the 911's settings should be T1 (attack) 2ms, T2 (decay) 200ms, T3 (release) 200ms, E sus(tain) 4 seconds (6) CP35 Attenuator / Voltage Source / Multiple. (7) 961 Interface. (8) CM1A - MIDI interface. Further information on all modules can be found on their individual Quick Start Guides at www.behringer.com/downloads.html The 904A is modulated by a slow sine wave from the 921 LFO and by the 2nd 911 EG, which should have settings around T1 (attack) 1 second, T2 (decay) 50ms, T3 (release) 4 seconds, E sus(tain) 9