Yamaha Magicstomp BASS EFFECTS PROCESSOR - Manual (Page 22)

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The MAGICSTOMP is equipped with a highly sophisticated Auto Feedback Reduction
function (AFR) to eliminate feedback (howling).
* In this case, “Feedback” is when a specific frequency produced by the amplifier causes the bass to resonate
uncontrollably, creating a howling sound.
The MAGICSTOMP’s AFR function uses a notch filter, which cuts the frequency that is
causing the feedback, to eliminate feedback. A maximum of five notch filters can be set
and operating at the same time.
The AFR function is only available in patches that have their effect type set to
“AcousticMulti”.
Auto Feedback Reduction (AFR) Function
■ Switching the AFR Function ON
The MAGICSTOMP is shipped from the factory with its AFR Function switched OFF (the function is
inactive). First, use the procedure described below to set the AFR Function ON (activate the func-
tion).
q
After pressing the [STORE/EXIT] button, press the ON/OFF switch two times to
select the “Effect Type Select” display in the Deep Edit Mode.
* When pressing the switch two times, make sure the switch is released within one second both times.
w
Until the following display appears, press and hold (for about four seconds) the
ON/OFF switch.
The display shown above will appear for one second and then return to the display that was
selected before the [STORE/EXIT] button was pressed.
* To switch the AFR Function OFF again, follow steps q and w described above once again.
The procedure described above only has an effect on patches that have their
effect type set to “AcousticMulti”. Also, the AFR function’s ON/OFF setting ef-
fects all patches, it can not be set in individual patches.
ÿEDIT-FXT:63/64Ÿ
ØAcousticMulti
ÿEDIT-FXT:63/64Ÿ
AFR
0 FUNCTION 0 OFF
CAUTION
Be careful. Constant feedback at loud levels can cause damage to equipment.