Zoom 504 II Using the Feedback Suppressor, Using F.B.SUPPRESSOR in play mode, Using F.B.SUPPRESSOR in edit mode, FS01 twice, Suppressor Feedback the Using

Suppressor Feedback the Using

Using the Feedback Suppressor

The 504 II incorporates an F.B.SUPPRESSOR that serves for reducing acoustic feedback by cutting a specific frequency range (feedback frequency). The F.B.SUPPRESSOR can be used in play mode or edit mode.

Using F.B.SUPPRESSOR in play mode

If feedback occurs while playing the instrument, the optional foot switch (FS01) connected to the CONTROL IN jack can be used to automatically detect the feedback frequency.

1. Insert the plug of the FS01 into the CONTROL IN jack of the 504 II, then turn power to the 504 II on.

If the FS01 is plugged into the CONTROL IN jack while the 504 II is NOTE already on, malfunction may occur. Be sure to turn on the 504 II only

after connecting the foot switch.

2. Set the [PLAY/EDIT] selector to "F.B.SUPPRESSOR".

3. Use the [+]/[-] keys to change the display indication to "SC".

"SC" is the attenuation setting value based on automatic detection of feedback frequency. Automatic detection starts when the F.B.SUPPRESSOR parameter is set to "SC" or set to off and then on again.

When wishing to retain the "SC" setting also while the unit is turned off, store the currently selected patch.

4. Return the [PLAY/EDIT] selector to "PLAY".

5. If feedback occurs during play, press the

FS01

FS01 twice.

F.B.SUPPRESSOR is switched on/off and the 504 II automatically detects the feedback frequency for attenuation.

Using F.B.SUPPRESSOR in edit mode

The following method allows finding the feedback frequency in edit mode, either automatically or manually.

1. If feedback occurs while playing the instrument, set the [PLAY/EDIT] selector to "F.B.SUPPRESSOR".

The 504 II switches to the edit mode.

2. Use the [+]/[-] keys to change the display indication to "SC".

If "SC" is already set, change the value and then select "SC" again, or press both []/[] foot switches (or the foot switch FS01 connected to the CONTROL IN jack) twice, to switch the F.B.SUPPRESSOR parameter off and then on again.

3. If feedback is not satisfactorily reduced by step 2, set the F.B.SUPPRESSOR parameter to a value between 1 - 30 that yields the best reduction.

When wishing to retain the F.B.SUPPRESSOR parameter setting also while the unit is turned off, store the currently selected patch.

Suppressor Feedback the Using

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