Yamaha Bass Effects Processor Auto Feedback Reduction (AFR) Function

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

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).

qAfter 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.

wUntil 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.

CAUTION

Be careful. Constant feedback at loud levels can cause damage to equipment.