Roland ML 2 Service Manual

Owner’s Manual

DCAC

AC & BATTERY

POWERED

FET

Thank you, and congratulations on your choice of the BOSS ML-2 Metal Core.

Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” and “IMPORTANT NOTES” (supplied on a separate sheet). These sections provide important information concerning the proper operation of the unit.

Additionally, in order to feel assured that you have gained a good understanding of every feature provided by your new unit, this manual should be read in its entirety. The manual should be saved and kept on hand as a convenient reference.

A battery is supplied with the unit. The life of this battery may be limited, however, since its primary purpose is to enable testing.

Main Features

●

The ML-2 produces a heavy distortion with a bold attack, making it ideal for massivesounding death-metal riffs.

●

The LOW control produces a deep, low sound, even if you don't use extreme downtuning.

●

The HIGH control lets you create guitar-riff sounds with lots of edge (attack) and a crisp high end.

Panel Descriptions

fig.ML-2-name1.eps

3 6

1. AC Adaptor Jack

This jack accepts the connection of an AC adaptor (optionally available BOSS PSA-series). By using an AC adaptor, you can play without being concerned about how much battery power you have left.

* Use only the specified AC adaptor (PSA-

series), and make sure the line voltage at the installation matches the input voltage specified on the AC adaptor's body. Other AC adaptors may use a different polarity, or be designed for a different voltage, so their use could result in damage, malfunction, or electric shock.

* If the AC adaptor is connected while power is

on, the power supply is drawn from the AC adaptor.

* If there is a battery in the unit while an AC

adaptor is being used, the ML-2 will switch over to battery-powered operation should the

Panel Descriptions

line voltage be interrupted due to a power blackout or power cord disconnection.

2. CHECK Indicator

This indicator shows whether the effect is on or off, and also doubles as the battery check indicator. The indicator lights when the effect is on.

* If you're powering the unit with a battery

and the CHECK indicator goes dim—or doesn't light at all—when you try to turn the effect on, the battery is near depletion and should be replaced. For instructions on changing the battery, refer to “Changing the Battery” (p. 11).

* The CHECK indicator shows whether the

effect is being applied or not. It does not indicate whether the power to the device is on or not.

3. OUTPUT Jack

Connect this jack to the input of a guitar amp or another effects processor.

4. Pedal Switch

This switch turns the effect on/off.

5. Thumbscrew

When this screw is loosened, the pedal will open, allowing you to change the battery.

* For instructions on changing the battery,

refer to “Changing the Battery” (p. 11).

6. INPUT Jack

This jack accepts signals coming from a guitar or other musical instrument, or another effects unit.

* The INPUT jack doubles as power switch.

Panel Descriptions

Power to the unit is turned on when you plug into the INPUT jack; the power is turned off when the cable is unplugged. When not using the effects unit, be sure to disconnect the plug from the INPUT jack.

fig.ML-2-name2.eps

87910

HIGH

LOW

DIST

7. LEVEL Knob

This knob controls the volume the effect sound.

8. LOW Knob

This knob controls the tone of the effect at lower frequencies. Tuning the knob clockwise boosts the lower frequencies, while tuning it counterclockwise cuts the lower frequencies.

9. HIGH Knob

This knob controls the tone of the effect at higher frequencies. Tuning the knob clockwise boosts the higher frequencies, emphasizing the picking attack. Tuning the knob counterclockwise cuts the higher frequencies, producing a tone in which the low-frequency sounds are more prominent.

10. DIST Knob

This knob controls the amount of distortion applied to the sound. Tuning the knob clockwise boosts the distortion effect.

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