Manual Roland AC-40 (page 8 of 76) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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Operation

Turning the Power On/O

Once everything is properly connected (p. 4, p. 5), be sure to

follow the procedure below to turn on their power. If you turn on

equipment in the wrong order, you risk causing malfunction or

equipment failure.

1. Make sure that the power to all equipment is turned o.

2. Set each of the AC-40’s [VOLUME] knobs and the

[MASTER] knob to 0.

3. Switch on the power to any external equipment

connected to the AUX IN jack.

4. Switch on the AC-40’s power.

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

few seconds) after turning the unit on is required before it will

operate normally.

5. Switch on any equipment connected to the LINE OUT

jacks.

6. When you want to turn the power o, minimize the

volume on the AC-40 and all connected devices, and then

turn o their power in the opposite order of that followed

when turning them on.

* Before turning the unit on/o, always be sure to turn the volume

down. Even with the volume turned down, you might hear some

sound when switching the unit on/o. However, this is normal

and does not indicate a malfunction.

Using Eects

Chorus and reverb are provided for both the Guitar channel and the

Mic/Line channel.

You can adjust the eect depth individually for each channel.

Applying Chorus

1. Set each channel’s [CHORUS] switch to “WIDE” or “SPACE”

position.

WIDE

This is a stereo chorus that processes the three bands

independently.

By applying band-appropriate chorusing to each of the low,

mid, and high-frequency bands, this eect creates a deep and

spacious chorusing that is appropriate for the sound of an

acoustic guitar.

The low range remains rmly localized in the center, and the

sound will become more spacious as you go from the mid to

the high range.

SPACE

This is a chorus that mixes the sounds in the air, a method that

is possible only with a stereo system. On the AC-40, the eect

sound is emitted by the right speaker (as you face the unit),

and the direct sound is emitted by the left speaker. The chorus

eect is produced as the sound from the left and right speakers

is mixed in the air.

Compared to an electrically mixed chorus eect, this eect

has a broader left/right spread and a more natural-sounding

spaciousness.

OFF No chorus eect will be applied.

* If the [CHORUS] switch is “OFF,” you won’t be able to turn chorus

on/o by operating the footswitch.

Applying Reverb

This is a stereo reverb that was developed specically for acoustic

instruments and produces a spacious and natural sound.

1. Use the [REVERB] knob to adjust the depth.

* If the [REVERB] knob is at 0, you won’t be able to turn reverb on/

o by operating the footswitch.

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Roland AC-40 Manual

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