User Manual for BEFACO models including: V1 Percall Envelope Generator Module, V1, Percall Envelope Generator Module
Percall - Befaco
PERCALL USER MANUAL Rev. Jul 2020 PERCALL USER MANUAL POWER & INTRO POWERING THE THANKS FOR PURCHASING A MODULE FROM BEFACO! MODULE BEFORE YOU PLUG THIS MODULE IN... 1. Disconnect your cabinet from the mains. 2. Triple check the power cord polarity. The coloured line on the cable (pin number one) is the -12V rail. 3. If you plug the module backwards you might burn it out and unfortunately this is not covered by the warranty. 4. If you have any questions about this product please send them to PERCALL USER MANUAL FUNCTIONAL BLOCKS INTERNAL STRUCTURE REFERENCE As you can check on the diagram above, PercAll is based on four identical channels. Each channel has a VCA circuit, which is internally controlled by a Decay Envelope circuit. This envelope is fired via its TRIG Input and the time of the decay can be either controlled manually or CV via its dedicated CV Input. The module counts with two Choke circuits for channels 1-2 and 3-4. When Choke switch is activated (Switch on top position), the TRIG signal of the first channel mutes second channel's envelope. The obvious application to this is to make open-close hi-hat patterns but we encourage you to get creative on this a try more stuff. The Strenght input is a macro CV Input that affects to all envelopes amplitudes at the same time. As the ratio of the envelope is constant, the falling time will be affected depending on the signal plugged in, as well as the amplitude of the sound. This emulates the behaviour of a real percussive instrument, where the release time depends on the energy applied to the membrane. The audio Output of every channel is summed on a final mixing stage at Out 4. Inputs 1 to 3 are normalized, so they will be taken out of the mix if you use that individual output. .2 PERCALL USER MANUAL MISCELANEA SPECS & CREDITS * Size EXTRAS .4Scribus 1.5.4 Scribus PDF Library 1.5.4