Bedienungsanleitung Roland AC-60 (Seite 10 von 20) (Englisch)

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Names of Things and What They Do

Setting the Feedback Point Automatically

You can have the frequency at which the feedback is

suppressed be determined automatically.

* Use in conditions where feedback occurs.

Turn the FREQUENCY knob to the “AUTO” position.

fig.033

The ANTI-FEEDBACK indicator flashes slowly, and

automatic detection goes into standby.

Press the START button.

Automatic detection of the feedback point starts. The

indicator flashes rapidly when detection is in progresses,

and when the feedback point is found, the indicator

lights steadily. If no feedback point is detected, the

indicator flashes slowly, and the automatic detection

function returns to standby.

Press the START button once more to conduct the

automatic detection again.

Setting the Feedback Point Manually

Turn the knob to select the frequency at which the feedback

is to be suppressed.

Turn the knob, moving through the range of L through H

(the ANTI-FEEDBACK indicator lights up) to set the

frequency at which the feedback is to be suppressed.

fig.34

The frequency to which the anti-feedback function is applied

increases as the knob is turned to the right.

You can use a foot switch (the optional BOSS FS-5U) to run

automatic detection of the feedback frequency or to turn the

anti-feedback function on and off.

You can use anti-feedback even when feedback is not a

problem. For example, you can use it to remove undesirable

resonance in the low to midrange, as well as correct other

problems with the sound quality.

15. MUTE button

This switches the Mute function on and off.

When you press the button, the MUTE indicator flashes,

muting is turned on, and the speaker output and sounds

from SUB WOOFER OUT and LINE OUT are muted.

With the mute function activated, you do not need to turn

down the VOLUME knob or MASTER knob to mute the

noise when plugging into, or unplugging from your guitar.

* Sounds from the DI OUT/TUNER OUT and PHONES jacks

are not muted.

By connecting a tuner (optional) to DI OUT/TUNER OUT

and then pressing the MUTE button, you can tune your

instrument without the sound being output from the

speakers.

You can use a foot switch (the optional BOSS FS-5U) to

switch muting on and off. (p. 12)

16. MASTER knob

This adjusts the volume from the speakers, PHONES, and

SUB WOOFER OUT.

17. PHONES jack

Headphones are connected here. No sounds are output from

the speakers or from SUB WOOFER OUT when headphones

are connected.

18. POWER switch

This turns the AC-60’s power on and off.

The POWER indicator lights up when the power is on.

* This unit is equipped with a protection circuit. A brief interval

(a few seconds) after power up is required before the unit will

operate normally.

945

* If you need to turn off the power completely, first turn off the

POWER switch, then unplug the power cord from the power

outlet. Refer to

Power Supply

(p. 5).

AC-60_e.book 10 ページ２００６年９月８日　金曜日　午後２時２１分

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