First Act MA120 User Manual

MA120

AMPLIFIER

INSTRUCTIO N

MANUAL

The MA120 is a two channel

amplifier with independent

output level and EQ for

each channel.

OTHER
FIRST ACT

®

PRODUCTS :

10 & 20ft Cables

Books

Auto Tuner

Guitar Strings

Picks

StringwinderGuitar Case

First Act Inc.

745 Boylston Street
Boston, MA 02116 USA
rstact.com

Customer Assistance

Phone: [phone]

Email: info@firstact.com

1. This unit should be protected from contact

with water, moisture, or liquids of any kind.

2. This amplifier should only be serviced by a

qualified repair technician.

3. This unit should not be placed near a heat

source (permissible operating temperature

range 32–104ºF).

4. Do not set heavy objects on the power cable or

allow the cable to be torn. If the cable needs

repair, do not plug the amplifier in. Have the

amplifier repaired immediately by a qualified

service technician.

5. Unplug your amplifier when not in use for

extended periods of time.

6. Turn amplifier power off when not in use.

7. The outside of the amplifier may be cleaned

with a dry cloth only. Do not use water or

chemicals to clean.

8. This unit contains digital circuitry and may

cause interference if placed too close to radio

or television receivers.

9. Do not operate the amplifier if:

» the unit or main cable has been

visibly damaged

» the unit has been dropped

» the unit has been exposed to

moisture/liquids of any kind

» the unit is not functioning properly

Note: If you suspect that your amp is

defective, have it checked and repaired by

a qualified service technician.

10. Do not expose the unit to:

» Direct sunlight

» Excessive humidity

» Excessive dust

» Strong vibration

11. This unit must be properly grounded.

12. To prevent electric shock hazard, do not open

the cabinet or chassis of the amplifier.

©2006 First Act I nc. All right s res erved .

First Act an d the Firs t Act logo are

trade marks of F irst Act Inc.

US Patent Nos. D487 ,627S

MA120 .M.02

IMPORTANT SAFETY INSTRUCTIONS

Please read carefully before operating your amplier:

Follow these basic precautionary measures to ensure a longer life for your amplifier, and to reduce

the risk of electric shock.

1. INPUT JACK

Connect instrument cable here (1/4” jack).

2. MASTER

Controls the total output level of amplifier.

CHANNEL 1 – CLEAN C HANNEL

3. LEVEL

Controls the output level.

4. TREBLE

Adjusts high frequency output.

5. BASS

Adjusts low frequency output.

6. CHANNEL SWITCH

Switch off/out for Channel 1–indicated
by green LED.

Switch on/in for Channel 2–indicated

by red LED.

7. LED
Indicates amplifier power on/off.

CHANNEL 2 – DISTORTION CHANNEL

8. LEVEL

Controls the output level.

9. GAIN

Controls the input level. Increasing gain
adds distortion, or overdriven rock tone;
decreasing gain produces a cleaner sound.

10. TREBLE

Adjusts high frequency output.

11. MIDDLE
Adjusts middle frequency output.

12. BASS
Adjusts low frequency output.

13. POWER ADAPTOR/ FUSE COMPARTMENT

Connection for power cable. Use only the
power cable supplied with this amplifier.

14. POWER

On/off switch.

15. AUDIO IN

Input jack for external audio device such as
CD or MP3 player (device should have its
own volume control).

16. PHONES

Connects to stereo headphones, which
cancels speaker output.

1 4 632

1413

FAC E P L ATE

BACK P L ATE

RE P LA C IN G TH E F U SE

An additional fuse has been enclosed in the fuse
compartment of your amplifier, directly below
the power input. The fuse compartment contains
an active fuse and a replacement. The fuse protects
against power surges. If your amplifier does not
power up as usual, the fuse may need to
be replaced.

If the fuse fails:

1. Turn the amplifier power off.

2. Unplug the amplifier.

3. Detach the power cord and set aside.

4. Carefully insert a flathead screwdriver to

open the fuse compartment. Be careful not
to break the fuse inside.

5. Remove the blown fuse from the inner

(active) slot.

6. Move the new fuse from the outer slot to the

inner slot.

7. Close the fuse compartment.

8. Discard the blown fuse.

Note: If you replace the fuse and the amplifier
still does not power up, have the unit checked by
a qualified repair technician.

Open the fuse compartment.

Remove the blown fuse from the inner (active)
slot. Move the new fuse from the outer slot to
the inner slot.

US I N G ANO TH ER TYP E IS A P OT E NT IAL FI R E H AZA R D.

CAUTION

REPLACE ONLY WITH SAME
TYP E 250V, 1A FUSE .

ACTIVE FUSE

REPLACEMENT FUSE

SPECIFICATIONS

Output Power:

20 watts RMS

Frequency Range:

40 Hz ~ 8 kHz

Speaker:

8" / 25W / 4 ohms

Input Sensitivity:

26 mV

Power Supply:

Detachable,
UL-approved
power cable

Dimensions:

(LxWxH)

12.5" x 13" x 6.75"

Weight:

15 lbs.

SPECIFI CATI ONS SUBJECT TO CHANGE W ITHOUT NOTIC E

5 8 9 10 11 127

15 16

CHA NNEL 1

CHA NNEL 2