Source Audio Toolblox Programmable EQ User Manual

PROGRAMMABLE EQ

USER’S GUIDE

SA170

OVERVIEW

Thank you for purchasing the Source Audio Programmable EQ. The

Programmable EQ is a compact, 7-band digital equalizer with four user
preset locations. It uses high-precision processing combined with profes­sional quality analog/digital converters for superior tone. The digital
nature of the unit offers a significant advantage over analog equalizers
in that presets can be easily saved and recalled. The MIDI input and Back­page features further extend the capabilities of the unit.

• Flexible Range: +/- 18dB of range over 7 bands. An 8th band at 62Hz can

be edited using the Octave Extend Backpage function.

• Small Footprint: A compact, rugged, cast aluminum housing.

• State of the art DSP: 56-bit processing and crystal clear 24-bit

converters.

• Digital Flexibility: Presets can be quickly saved and restored.

All presets can be accessed via the footswitch.

• Hardwire “True” Bypass: hardwire bypass utilizes a small-signal relay

for improved reliability and remote switching capabilities.

• MIDI input: recall presets, engage/bypass remotely via MIDI.

2 | Overview of Features

CONNECTIONS

1. Power

To power the unit, connect the included 9V battery or connect a Source
Audio 9V power supply to the 9V DC jack.

Note: Use of a non-Source Audio power supply may damage the unit and
void the warranty.

2. Guitar/Audio Connections

The unit has ¼-inch mono input and output jacks for use with guitar, bass,
and other instruments.

Note: The unit will not power up until a ¼-inch plug is inserted into the

input. Don’t forget to unplug the cable from the input when the unit is not
in use—otherwise the battery will continue to drain.

3. MIDI input

The Programmable EQ also features a MIDI (Musical Instrument Digital
Interface) input which allows certain functions of the pedal to be accessed
remotely. See the MIDI implementation table (page 6) for more details.

Connections | 3

CONTROLS

EQ Display: The heart of the Programmable EQ is the 7-band graphic

equalizer display. The LED display shows the currently active settings of
the equalizer within a range of +/-18 decibels (dB) for each of the seven
accessible bands. The left and right arrow buttons select the frequency
band to be adjusted and the main encoder knob adjusts the level of the
selected band up or down. The center frequency (in Hz) of each band is
indicated at the bottom of the display.

Band Select Buttons:

indicated by left and right arrows. Press a corresponding button to select
a higher or lower frequency to be edited.

Note: The equalizer can be quickly “zeroed” by pressing the left and right
arrow buttons simultaneously.

Encoder:

The main knob on the unit is an encoder style control that

allows incremental up or down level changes to the selected frequency
band in 1dB steps. The maximum range is +18dB and the minimum is

-18dB for each frequency band.

SELECT Button:

four user presets. The display will update to show the saved equalizer
curve and output for each preset location. Also, the four LEDs above
the SELECT button will indicate which of the four presets is currently
selected.

4 | Controls

The band select buttons flank the display and are

Pressing the select button will scroll through the