Zoom A1X FOUR Quick Guide

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

Zoom A1X FOUR Specifications

General

Number of Simultaneous Effects	5
Looper	30 seconds
Weight	610 g (without batteries)
Sampling Frequency	44.1 kHz
A/D Conversion	24-bit
D/A Conversion	24-bit
Display	LCD
Type	Multi-effects processor
Drum Machine	Yes
Patches	50
Rhythm Patterns	68
Output	1/4'' stereo output
USB	USB 2.0
Power	4 AA batteries, AC adapter (optional)
Frequency Response	20 Hz - 20 kHz +1 dB, -3 dB (10 kΩ load)
Input	1 x 1/4" (guitar), 1 x 1/8" (aux)
Effects	Guitar, bass, acoustic guitar