PRAGA voltage controlled stereo mixing console operator’s manual rev. 1967/1.
module explained SALUT screws before powering up. To better understand the device, we strongly advise the user to read through the entire manual before using the module. Thank you for purchasing this Xaoc Devices product.
front panel overview fig.
1. UNIPOLAR MODE Unipolar mode (button lit green) is designed for unipolar control voltages commonly found in envelope generators. In this mode, the attenuator knob controls offsets to the incoming CV, allowing the dynamic response to CV to be retained regardless of attenuator position (fig. 4a, 4b). With attenuators at maximum, a CV of 8V opens the channels to 0dB, while closing the attenuators allows silencing the channels to -85dB.
block diagram VCA output VCA output chain input main summing bus stereo output aux summing bus signal input AUX sends aux aux insert point insert point vu control signal input CV volume 1 pan vol mute CV pan 2 vu control pan vol mute CV pan chain output 3 AUX return 1+2 CV volume 4 fig. 2 CHANNEL MUTING PAN CONTROL Praga offers both manual and CV control over the position of each channel in the output stereo panorama.
REV. 03.2017 POWER CONNECTOR 15 attenuated signal unaffected by the pan control. The purpose of these outputs is to offer individual mix components for multitracking, as well as to offer insert functionality with the Hrad expander. 13 1967 VOLTAGE CONTROLLED MIXING SURFACE 14 AUXILIARY OUTPUTS Two aux send outputs, together with two pairs of stereo aux return sockets allow the user to patch two send effects. A dedicated bipolar aux knob in each channel allows for manual control of the sends.
control characteristics 10 10 Gain [dB] 0 Gain [dB] fig. 4a unipolar (green) mode gain vs. cv for different attenuator settings 10 -10 -20 fig. 5a 0 bipolar (red) mode gain vs. cv for different 10 attenuator settings -10 -20 -30 7 8 5 -30 -40 4 3 -40 -50 2 -60 -70 0 1 2 3 4 5 2 -50 1 -60 6 7 8 9 10 Volume control voltage (unipolar) -5 Gain [dB] -10 -20 -3 -2 -1 0 1 2 3 4 5 Volume control voltage (bipolar) 10 10 0 -4 Gain [dB] 10V fig.
main features WARRANTY TERMS XAOC DEVICES WARRANTS THIS PRODUCT TO BE FREE OF DEFECTS IN MATERIALS OR WORKMANSHIP, AND TO CONFORM WITH THE SPECIFICATIONS AT THE TIME OF SHIPMENT FOR A PERIOD OF ONE YEAR FROM THE DATE OF PURCHASE. DURING THAT PERIOD ANY MALFUNCTIONING OR DAMAGED UNITS WILL BE REPAIRED, SERVICED, AND CALIBRATED ON A RETURN-TO-FACTORY BASIS.
