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Zoom A1 FOUR Quick Guide

Zoom A1 FOUR
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11
Preventing feedback
The anti-feedback function can be used by selecting Anti FB. This effect can detect and
cut the frequency band that is feeding back to reduce it.
1.
Activate EDIT mode.
• Press
.
2.
Select the effect that will be used to
assign Anti FB.
• Press
.
Assign Anti FB to the beginning of the
effect chain to maximize its effective-
ness.
3.
Selecting the effect category.
• While pressing
, press
and select FILTER.
4.
Select the effect type.
• Press
or , and select
Anti FB.
5.
Turn the effect on.
• Press
again.
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-feed-
back function will become active.
The FREQ parameter can be set to a value other than AUTO to specify a fre-
quency band.
HINT
1
2, 6
5
3, 4

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Zoom A1 FOUR Specifications

General IconGeneral
Looper30 seconds
Rhythm Patterns68
Weight340 g (without batteries)
Simultaneous Effects5
Sampling Frequency44.1 kHz
A/D Conversion24-bit
D/A Conversion24-bit
DisplayLCD
Patches50
Input1/4'' instrument jack
Output1/4'' stereo output jack
Power4 AA batteries
Frequency Response20 Hz - 20 kHz +1 dB, -3 dB (10 kΩ load)
USBMicro USB

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