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addac system
addac803 quadraphonic spatializer

price : tbd

ADDAC803 Quadraphonic Spatializer

this is our quadraphonic output module.

using the vbap (vector-base amplitude panning) principle it allows to position a mono signal over a quadraphonic speaker array for sound spatialization. the vbap algorithm can be controlled by cartesian or polar methods.

sound path is fully analogue featuring 4 high quality vca's. featuring both ¼ inch and 3.5mm jacks for adapter free connections.

four 16 bit cv outputs mirror the signal sent to the vca's control, when connected to 4 external vca's these can be used for polar mixing of 4 diferent sound sources.

the 2 filter cv outputs react according to the distance from the center point. the + output increases as the sound gets further away from the center of the room allowing to sync a low pass filter to the input sound so that as it moves away from the center the high frequencies get attenuated further increasing the spatialization experience. another good practice would be to sync a reverb dry/wet signal as well so that the sounds gets more difused as it moves away from the center into the horizon. both the filter and the reverb should be plugged between the sound source and the 803, in order for the incoming sound to be processed before being routed to the 4 outputs.

the x and y cv outputs mirror the cartesian sound position between 0 and +5v.

specifications:
mechanical:
format: eurorack
width: 14 hp
depth: 6 cm

control voltage i/o:
cv inputs: ± 10v
cv outputs: + 5v

electrical:
compatible with +-12v and +-15v power supplies.
max current: 150ma on positive rail, 100ma on negative rail
bus board cable: 8x2 idc (doepfer style) connector




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