Gallien-krueger MB150S/112, MB150E/112, MB150S, MB150E User Manual

Series III

OWNERS MANUAL

MB150E/112MB150S/112

MB150EMB150S

MicroBass-III Series

RI SK OF ELE CTR IC SH OCK

DO NO T O PEN

WA R N I N G:

Congratulations

Your purchase of a new Gallien-Krueger MicroBass­III Series Amplifier is surely the result of much
careful consideration on your part. For our part,
we at Gallien-Krueger are pleased that you chose
us and are confident that you will be a satisfied
customer. In choosing an MB Series product, you
own a unit with many unique features, which will
allow you to create your own distinct sound.

To get the most out of your new purchase please

Table Of Contents

take a few minutes to read through this manual.
If you are in a hurry, we suggest you at least read
through the Quick Start and Safety Information
sections before setting up your new rig. This will
help get you started and give you a few quick tips,
but is not a substitute for reading the rest of the
manual.

Your amplifier should have come with the follow­ing items, please check the contents of the box to
ensure that you have everything.

Included with your MB Series product:

Power Cord 1
Owner’s Manual 1
Warranty Card 1
Safety Instructions Sheet 1

Table Of Contents

Safety Information 3
GK Philosophy 4
Setup & Quickstart 5
Front Panel Controls 6
Rear Panel Controls 7
Internal/External Speakers 7
Sample Settings 8
Sound Advice 9
Tech Talk 10
Specifications 12

Warning!
Our amplifiers are capable of producing high
sound pressure levels. Continued exposure to
high SPL’s can cause damage to your hearing.
Always set the volume at a safe listening level or
use hearing protection if the unit is operated at
higher levels.

CAUTION

RISK OF ELECTRIC SHOCK

CAUTION:

The lightning flash with arrow
head symbol, within the
equilateral triangle, is
intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product inclosure that may be of
sufficient magnitude to constitute
a risk of electitric shock to persons

WARNING:

CAUTION:

ATTENTION:

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE TOP COVER. NO USER-SERVICEABLE PARTS
INSIDE. REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE

TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO
WIDE SLOT, FULLY INSERTED.

POUR EVITER LES CHOCS ELECTRIQUES, INRODUIRE LA LAME LA
PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE
DE LA PRISE ET POUSER JUSQU’AU FOND.

DO NOT OPEN

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!

The exclamation point within an
equilateral triangle, is intended
to alert the user to the presence

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of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.

MicroBass-III Series

Safety Information

Please read all enclosed safety precautions, before
connecting or operating this product.

Verify Line Voltage and Amperage Before Use:

Your new MicroBass Series amplifier has been
factory configured for use with:

120 Volt/60Hz 15 A circuit for USA/Canada.
230 Volt/50Hz 10 A circuit for UK/Australia.
240 Volt/50Hz 10 A circuit for Europe.
100 Volt/50Hz 15 A circuit for Japan.
220 Volt/50Hz 10 A circuit for Korea.

Connecting the amplifier to a line with specifications
other than indicated above can create a safety or
fire hazard and may damage the amplifier. If you
have any questions about the voltage requirements
for your specific model, or about the line voltage
in your area, contact your dealer before plugging
the unit into a wall outlet.

Verify AC Circuit Capacity Before Use:

The high power output of your amplifier may require
heavy current draw under full-load conditions. To
insure proper performance and avoid potential safety
hazards, we recommend connection to line circuits
with amperage specified “as above”. Connecting
multiple amplifiers to the same circuit, or connect­ing the amplifier to the same circuit used by other
heavy-power devices, such as high-wattage lights,
may cause circuit breakers to trip. It is always a
good idea to avoid using any audio equipment on
the same AC circuit as equipment with motors, such
as air conditioners or refrigerators. This will lessen
the possibility of power variation and electrical
start-up noise affecting your sound.

Safety Information

Connecting to AC Power:

When setting up, make certain that the AC plug
is easily accessible. If mounting in a rack, ensure
that the AC mains can be easily disconnected by
a plug or by an all-pole disconnect switch on or
near the rack.

Disconnect When Not In Use:

If you do not intend to use the amplifier for a
considerable length of time, disconnect the plug
from the AC outlet. Just switching the unit off
does not mean that it is fully disconnected from
the AC Mains. To isolate the unit from the AC
mains, you must disconnect the power cord from
the unit and the AC outlet. When disconnecting
the power cord always pull from the plug, never
pull from the cord.

Do Not Open the Amplifier Enclosure:
There are no user-serviceable components inside
this product. Opening the amplifier enclosure
may present a shock hazard, and modification
to the product will void your warranty. If liquid
enters the unit, or any metal object such as a paper
clip, wire, or staple accidentally falls inside the
enclosure, disconnect the unit from the AC power
source immediately and consult an authorized
service station.

Unpacking:

The carton and packing materials used in shipping
your new amplifier were specifically designed to
cushion it from the shocks and vibration that occur
during transport. We suggest that you save the carton
and packing materials for use in shipping, in the
event you move, or the amplifier needs repair.

AC Power Cord:

To avoid safety hazards, use only the power cord
supplied with your unit. If a replacement cord is
needed, make certain that to use a standard IEC
compliant cord. Damaged power cords should be
replaced immediately.

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GK Philosophy

MicroBass-III Series

I have never seen the point in doing things the
way others have done them. I also have not been
very interested in following the latest fad. I am a
Stanford educated engineer who worked his way
through school as a musician. Like all musicians,
I have lugged amplifiers up stairways and into car
trunks, always wondering why these things had to
be so heavy, bulky, and hard to handle.
As I am the principal innovator at GK, our prod-

GK Philosophy

ucts reflect my attitudes and life experiences. I
don’t model my designs after other manufacturer’s
products (as some of our competitors are proud of
reciting). Instead, I believe new and old problems
are best solved with new solutions. Having taken
our own path, GK products enjoy a unique, un­matched sound, allowing the artist using them every
opportunity to make an original statement.
Having supported my products for over thirty
years, I have learned from the story they tell. Gal-
lien-Krueger is a reflection of that story, and has
a commitment to support that legacy. Just as the
products I created thirty years ago are still telling
their story, the products we create today will be
talking to us tomorrow.

If your MB Series amplifier or combo is missing any
items, or if you encounter problems while setting
up your new equipment, please contact your local
dealer, or us as soon as possible at:

Gallien-Krueger, Inc.
2234 Industrial Drive
Stockton, CA 95206
phone: [phone]
fax: [phone]
Internet: www.gallien-krueger.com
Email: [e-mail]

We wish you a lifetime of good playing and re­member to always have fun!

Robert Gallien

Founder & President

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