Source Audio Spectrum Intelligent Filter User Manual page 5

then automatically switch back to the primary parameters five seconds after the last knob
adjustment.
INPUT/SENS Knob: A dual function knob that adjusts the level of INPUT signal going to the processor,
and also the SENSITIVITY of the envelope filter.
DEPTH/MIX Knob: A dual function knob that adjusts the modulation depth of the filter and the
wet/dry MIX.
FREQ/RES Knob: A dual function knob that adjust the frequency starting point of the filter's
modulation as well as the resonance of the filter.
SPEED/VOL Knob: A dual function knob that adjusts the rate of the envelope's attack and decay as
well as the overall output level.
Effect Selector Toggle Switch: Use the Spectrum's three-position toggle switch and two preset banks
to easily access six different presets.
Footswitch: Enables or bypasses the effect. Also, pressing and holding the footswitch from the
bypassed state toggles between the first and second preset banks.
ALT (Alternate Function) Button: The small black button located on the topside of the pedal next to
the CONTROL INPUT jack. Pressing the ALT button temporarily puts the pedal into Alternate Control
Mode (indicated by the blinking top center LED). Alternate Control Mode switches from the Primary
to Secondary function of the knobs. Also moving the center toggle switch will switch between the
Green and Red Preset Banks (go to the Preset Banks section for more info).
SA248 Spectrum Intelligent Filter User Guide 5