HRAD mixing console commander operator’s manual rev. 1967/X/1.
module explained SALUT Hrad connects to Praga using the two 16-pin ribbon cables 12 supplied with the unit (see fig. 2). note: these cables are deliberately short and should not be replaced with longer ones for the sake of safety as well as keeping interference and noise to a minimum.
front panel overview fig.
POWER CONNECTOR REV. 03.2017 Observe the cable orientation! Do not mistake expander headers with power cord headers, this would void the module warranty! 1967 VOLTAGE CONTROLLED MIXING SURFACE 12 13 fig. 2: installation VOLUME CONTROL at the main output 2 . The final signal level is shown by the 5-bar LED indicator 3 . The headphone volume at the phones output 4 is set by the phones level knob 5 .
15 HEADPHONE OUTPUT fig. 3: jumpers The dedicated stereo phones output on Hrad can drive a wide range of studio and consumer grade headphones with a dual high– quality OPA2134 per channel. Note that the maximum loudness and low–frequency range may vary with impedance. The recommended headphone impedance is 80 to 300 Ohm. The phones level knob is independent of the main level attenuator, hence you can hear your mix before your audience does.
block diagram The voltage response of this VCA is the same as in Praga (please refer to its manual for details). The CV inputs are internally normalized to 8V. it may be attenuated with the corresponding aux ret (a or b) knob. From the attenuator, the signal is routed to the stereo summing bus in Praga. From the VCA, the signal passes through the bipolar aux attenuator on Praga where one of the auxiliary channels (a or b) may be selected, and the amount of send may be set manually.
multiple filter fx unit reverb fig. 5 fig. 6 on the amount of the effect being mixed to your audio via the corresponding aux ret attenuator. By using additional modulation plugged into the aux cv you can dynamically control which parts of the audio will have the reverb or delay added to them. signal from a channel in Praga and process it through an additional module (e.g. a filter, or bit crusher), and plug the result into the corresponding aux ins input in Hrad (fig. 6).
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 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.
