The 227e System Interface voltage-controls spatial placement of signals in 2D quad space and offers a swirl mode for rotating audio

The 227e routes four primary audio inputs through a 2D spatial panning matrix to four outputs (front-left A, front-right B, rear-left C, rear-right D). In normal mode, two knobs per channel set left-right pan and front-rear depth. When the CV inputs are engaged (knobs fully clockwise), spatial position is fully voltage-controlled — enabling automated movement. In Swirl mode, the semantics change entirely: the left knob sets rotation rate (up to 10 Hz, direction depending on whether it is above or below center), and the right knob sets the radius of rotation. CVs add to these settings. Swirl creates continuously rotating quadraphonic movement from a single sustained sound.

Examples

Route a drone through the 227e in swirl mode at a slow rate, sending outputs to a quad speaker array — the drone appears to orbit the listener. Modulate swirl rate with a 266e fluctuating random voltage for organic, irregular rotation.

Assessment

Contrast the meaning of the 227e’s two location knobs in normal vs. swirl mode. Explain how increasing the amplitude (depth) knob in normal mode affects front-rear placement of a signal.