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BLEND KNOB
The BLEND knob is a wet/dry control for the effect output jack. Turning
the BLEND knob to its minimum counter-clockwise position will yield
100% dry and no wet signal. Turning the BLEND knob to its maximum
clockwise position will give you 100% wet and no dry signal. To obtain
an equal balance of both wet and dry signals, set the BLEND control to
50%.
PRESET Footswitch / LED
Press and release the PRESET Footswitch to load a preset into the
presently selected mode. If a preset is already loaded into the presently
selected preset, pressing the PRESET Footswitch will select the next
mode and load its preset.
The PRESET LED will light solid when a preset is loaded. While a preset
is loaded, if a black knob is turned, the PRESET LED will blink rapidly
telling you that though a preset is loaded, one or more knobs have been
turned. Pressing the PRESET Footswitch while the PRESET LED is
blinking will re-load the preset for the current mode.
MIC BYPASS Footswitch / STATUS LED
The Bypass footswitch toggles the Voice Box between effect mode and
bypass mode. If the STATUS LED is lit, then the Voice Box is in effect
mode. If the STATUS LED is off, then the Voice Box is in bypass mode.
In bypass mode: the dry vocal is output through the EFFECT Output
XLR jack and the effect is muted. In effect mode: the output of the
BLEND control determines how much effect vs. dry signal is output
through the EFFECT Output XLR jack.
In both effect and bypass modes, the instrument's signal goes through a
high quality buffer stage between the INSTRUMENT INPUT and OUTPUT
jacks.
MIC GAIN Toggle Switch
Use this switch to change the sensitivity of the mic pre-amp in the Voice
Box. HI gain mode should be used in most situations. LO mode is useful
if HI mode is clipping, if you want to connect the output from another
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mic pre-amp to the input of the Voice Box or if you have a loud singer
with an especially sensitive microphone.
PHANTOM POWER Toggle Switch
On the side of the Voice Box, next to the MIC INPUT XLR jack, is the
PHANTOM POWER toggle switch. Pushing the toggle switch up will
supply +45V to the microphone. The PHANTOM POWER switch should
only be set to ON when using a condenser microphone.
MIC INPUT XLR Jack
The MIC INPUT XLR jack is a fully balanced microphone input. Connect
your microphone directly to this input jack. The input impedance at the
MIC INPUT XLR jack is 10 kΩ.
INSTRUMENT INPUT ¼" Jack
In all modes but two (OCTAVES and UNISON + WHISTLE), the Voice
Box requires an instrument to be played along with your vocals. For the
six harmony modes, the Voice Box needs an instrument to provide
chords so that the Voice Box can determine the key of your instrument.
The best types of chords for the Voice Box should include the root, 3rd
and 5th of the chord. VOCODER mode only requires a sound source; the
VOCODER effects the instrument you play with your voice.
Plug the output of your instrEmail us at info@ehx.com
ument into the INSTRUMENT INPUT jack. The input impedance
presented at the INSTRUMENT INPUT XLR jack is 2.2 MΩ.
EFFECT OUTPUT XLR Jack
The Voice Box's vocal effect is output through the EFFECT OUTPUT XLR
jack on the side of the unit. The vocal harmonies, vocoder and other
effects as well as the dry and bypassed vocals are output from this jack.
The EFFECT OUTPUT XLR jack is a fully balanced line output jack. It can
be connected directly to the line input of a mixer, on stage breakout
boxes or the input of an A/D converter. The output impedance is 700 Ω.
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Need help?
Do you have a question about the VOICE BOX and is the answer not in the manual?
Questions and answers
I bought used, how do I know if my unit is working correctly?
To test if your used Electro-Harmonix Voice Box is working correctly, follow these steps:
1. Basic Connection Setup
- Connect a microphone to the MIC input using a balanced XLR cable.
- Connect a balanced XLR cable from the EFFECT output to a mixer’s line input.
- (Optional) Connect an instrument to the INST input with an unbalanced instrument cable.
- Plug the AC adapter into a wall outlet and connect it to the 9V power input on the Voice Box.
2. Testing the Audio Output
- Speak or sing into the microphone and check if sound comes through the mixer or speakers.
- Adjust settings such as harmony blend and reverb to see if they affect the vocal output.
3. Testing Harmony Effects
- Set the blend effect to maximum to clearly hear harmonies.
- Play an instrument (if connected) to trigger harmonies based on chord input.
- Cycle through harmony modes (e.g., Multi-Harmony, Low Harmony, High Harmony) and confirm that different harmonies are generated.
4. Testing the Vocoder
- Switch to the Vocoder mode and speak or sing while playing an instrument.
- Ensure that your voice takes on the instrument’s tonal characteristics.
5. Checking Knobs and Settings
- Adjust knobs like Gender Bender and Voice Mix to confirm they change the sound as expected.
If the unit produces sound, responds to settings, and applies effects properly, it is working correctly. If there is no sound or some features do not work, check cables, power, and connections before considering further troubleshooting.
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