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Zoom A1X FOUR User Manual

Zoom A1X FOUR
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Preventing feedback
Select Anti FB (anti feedback) as an effect to use the anti-feedback function. This function can detect and
cut the frequency band that is feeding back to reduce it.
1.
Select a patch memory for assignment of the Anti FB effect in MEMORY mode.
2.
Press repeatedly to activate EDIT mode.
3.
Press .
Assign Anti FB to the beginning of the effect chain to maximize its effectiveness.
4.
While pressing , press and select FILTER.
5.
Press or , and select Anti FB.
6.
Turn to select the setting.
Select Auto to automatically nd and cut the frequency band that is causing feedback.
The frequency band can also be selected manually.
7.
Press to turn Anti FB on.
If Auto was selected in step 6:
Detection of the feedback frequency band will begin, and “Scanning” will appear on the display.
When the frequency band has been found, the message will disappear and the anti-feedback func-
tion will become active.
If a frequency band was selected in step 6:
The anti-feedback function will become active and the selected frequency band will be cut.
HINT
If a patch memory that includes the Anti FB effect is saved the detected feedback frequency band will
also be saved.
In STOMP mode, Anti FB can be turned on using a footswitch.
Multiple Anti FB effects can be used.
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Zoom A1X FOUR Specifications

General IconGeneral
Number of Simultaneous Effects5
Looper30 seconds
Weight610 g (without batteries)
Sampling Frequency44.1 kHz
A/D Conversion24-bit
D/A Conversion24-bit
DisplayLCD
TypeMulti-effects processor
Drum MachineYes
Patches50
Rhythm Patterns68
Output1/4'' stereo output
USBUSB 2.0
Power4 AA batteries, AC adapter (optional)
Frequency Response20 Hz - 20 kHz +1 dB, -3 dB (10 kΩ load)
Input1 x 1/4" (guitar), 1 x 1/8" (aux)
EffectsGuitar, bass, acoustic guitar

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