User Manual

SA248 Spectrum Intelligent Filter User Guide 14
made. After making an adjustment you can save the new settings by pressing and holding the
footswitch until the center LED stops blinking (around five seconds).
Control Mode
In Control Mode each preset engages with a pre-programmed preset, meaning the physical positions
of the knobs do not affect the sound of the preset. It is, however, possible to reach down and make
knob adjustments on the fly. If, after making a knob adjustment, the pedal is bypassed then
reengaged without moving the toggle switch, the sound will continue to reflect the new knob
positions. If the toggle switch is moved (regardless of whether the effect is engaged or engaged), the
pedal will revert to the parameter settings of the saved preset.
WYSIWYG (What You See Is What You Get) Mode
In WYSIWYG Mode the Spectrum functions much like a traditional effects pedal. It is a “What You See
Is What You Get” experience, meaning that the current physical positions of the knobs will indicate
the settings of the primary knob functions. Note: If you move the toggle switch to a new position all
the primary knob parameters will maintain the settings of the physical knob positions, but the
Alternate knob functions will revert to their default settings.
Universal Bypass
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Most effect pedals offer either true bypass or buffered bypass. The Spectrum contains two separate
circuits for bypass mode, allowing you to choose the method you prefer. The true bypass path uses
signal relays, which are electromechanical switches. This provides an ultra-low resistance path from
the input jacks to the output jacks, which is effectively the same as a single wire. The buffered bypass
path uses extremely low noise buffers, which provide very low output impedance and are effective
for driving long cables or long chains of effects following the Spectrum’s audio output.
Out of the box, the Spectrum operates in true bypass mode. To select a different bypass mode, open
the Spectrum’s Hardware Options menu in the Neuro Mobile App or Desktop Editor, then select an
option from the “Hardware Bypass Mode” pull down menu.
We recommend using the bypass method best suited for your signal chain. Ideally, the first pedal in a
signal chain is a buffered input followed by true bypass in the rest of the signal chain.
Both bypass methods have pros and cons associated with them. Buffered bypass provides consistent
input impedance so that if the source is susceptible to variations in input impedance (similar to a
guitar pickup), there won’t be a noticeable change in tone. True bypass has the benefit of providing a
dedicated hardwired bypass signal path. The Spectrum features small-signal relays for true bypass
switching that offer reduced pops and clicks compared to the traditional true bypass switching
method using a mechanical switch.