Gallien-Krueger MB 200 Users Manual

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Page 1

MB 200

OWNER’S MANUAL

Page 2

MB SERIES

Congratulations!

Your purchase of a new Gallien-Krueger MB

amplifier is surely the result of much

Series carefulconsideration we at Gallien-Krueger are pleased that you chose us, and are determined that you will be a

ed customer. In choosing a MB Series

satisfi amplifier unique features which will allow you to create you

To get the most out of your new purchase, please ta If you are in a hurry, we suggest you at least read through the Quick Start section before setting up you give you a few quick tips, but is not a substitute fo

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 Ampliﬁer:

Power cord 1 Owner’s manual Warranty card Safety instructions sheet

If your MB Series amplifier did notcome with all the item sett you

Galli 223 Stockton, CA 95206 pho fax: (209) 234-8420 Internet: www.gallien-krueger.com Email

We wish you a lifetime of good playing and remember t

, you now own an amplifier with many

r own distinct sound.

ke a few minutes to read through this manual.

r new rig. This will help get you started and

r reading the rest of the manual.

s listed, or if you encounter problems while

ing up your new equipment, please contact

r local dealer or GK as soon as possible.

en-Krueger, Inc.

4 Industrial Drive

ne: (209) 234-7300

: info@gallien.com

o always have fun!

on your part. For our part,

GK Philosophy

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’m a Stanford educated engineer who worked my way through school as a musician. Like

l musicians, I have lugged amplifiers up

irways and into car trunks, always wondering

sta wh

y these things had to be so heavy, bulky, and

hard to handle.

As the principal innovator at GK, our products

t my attitudes and life experiences. I

reflec

n’t mod el my d esi gns a fte r other

do ma nuf act urer new and old solutions

ucts enjoy a unique, unmatched sound,

prod

lowing you every opportunity to make an

al original statement.

Having supported my products for over thirty

ars, I have learned from the story they tell.

ye Gallien has a commitment to support that legacy. Just as the products I created over thirty five years ago are still telling their story, the products we create today will be talking to us tomorrow.

We’ll be listening,

s’ products. Instead, I believe

pro

blems are best solved with new

. Having taken our own path, GK

-Krueger is a reflection of that story, and

Robert Gallien Founder and President

Page 3

MB SERIES

C A U TI O N

RIS K O F E LE CTR IC SHO CK

DO N OT OP EN

C AU T I ON :

WA RNI NG:

TO R EDU CE T HE RI SK O F EL ECT RI C SH OCK , DO N OT RE MOV E TO P COV ER. NO U SER -SE RVI CE AB LE PA RTS IN SID E. RE FER S ER VIC ING TO Q UAL IFI ED S ERV IC E PE RSO NN EL .

TO R EDU CE TH E R IS K OF FI RE O R EL EC TRI C S HO CK , DO NO T EX POS E T HI S AP PLI AN CE TO R AI N O R M OIS TUR E

T he li ght nin g f la sh wit h a rro w

he a

d sym bol , w it hin th e

eq uil

at era l t ria ng le, is

in ten ded to a ler t t he us er to the

es enc e o f u ni nsu lat ed “da ng ero us vol tag e” wi thi n t he pr odu ct inc lo sur e t hat ma y be of su ffi cie nt ma gni tud e t o c on sti tut e a ris k o f e le cti tri c s hoc k to per son s

Th e e xcl am ati on poi nt wi thi n a n eq uil

at era l t ria ng le, is i nte nde d to al ert t he use r t o the pr ese nce of im por ta nt ope rat ing a nd

ma i

nt ena nce (

se rvi cin g) in str uct ion s i n the

li ter atu re ac com pan yin g t he ap pli anc e.

C AU T I ON :

ATTE NTIO N:

TO PR EVE NT EL ECT RIC SH OCK , MAT CH WID E B LA DE OF PLU G T O WI DE SLO T, FUL LY I NSE RTE D.

PO UR EVI TE R L ES CH OCS EL EC TRI QUE S, INR OD UIR E L A L AME L A PL US LA RGE D E LA FIC HE DA NS LA BO RNE C ORR ES PON DAN TE DE L A P RIS E E T P OUS ER JU SQU ’AU FO ND .

Table Of Contents

Safety Information __________________________ Pg. 4 Quick Start ________________________________ Pg. 5 Front Panel Controls ________________________ Pg. 6 Sound Tips ________________________________Pg. 7 Installation and Maintenance ___________________Pg. 8 Tech Talk ________________________________Pg. 9

ations ______________________________Pg. 10

Specific

*All Features and specifications are subject to change without notice

Please read the Safety Information section on page 4 and installation

ctions on page 12 before continuing.

instru

Gallien-Krueger

Industrial Drive

2234 Stockton, CA 95206 phone: 209.234.7300 fax: 209.234.8420

email: in internet: www.gallien-krueger.com

This amplifier is 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

fo@gallien-krueger.com

Warning!

protection if the unit is operated at higher levels.

Page 4

MB SERIES

Safety Information

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

Verify

Line Voltage and Amperage: Your

new MB Series Bass amplifier has been factory co

nfigured for use with the specific line voltage

for your location:

0 Volt/60Hz 15 A circuit for USA/Canada.

12 23

0 Volt/(50/60Hz) 10 A circuit for

Australia.

UK/ 23

0 Volt/(50/60Hz) 10 A circuit for Europe. 0 Volt/50Hz 15 A circuit for Japan.

0 Volt/50Hz 10 A circuit for Korea.

22 Proper AC circuit for all other countries.

Connecting the amplifier to a line with specifications other than indicated above can create safety and fire hazard, and may damage the amplifier. If you have any questions about the voltage requirements for your specific mo

del, 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 to the same circuit used by other heavy-power devices, such as high-wattage lights, may cause circuit

s to trip. It is always a good idea to avoid

breaker 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.

AC Power Cord:

To avoid safety hazards, use only the power cord supplied with your unit. If a replacement cord is needed, make certain to use a standard IEC complian be replaced immediately. When setting up, make certa not intend to use the amplifier for a considerable length of time, disconnect the plug from the AC Mains Socket. Do not use an extention cord.

Earth Grounding Connection:

To prevent electric shock, do not remove the grounding plug on the power cord, or use any plug or extension cord that does not have a grounding plug provided. Make certain that the AC outlet is properly grounded as well. Do not adapter plug with this product.

Do Not Open the Amplifier Enclosure:

There are no user serviceable parts inside this product. present prod enters the unit, or any metal object such as a paper clip accidentally falls inside the enclosure, disconnect the unit from the AC power source imm stat

Setup:

To insure proper operation and to avoid potential safety hazards, place the unit surface. Do not plug or unplug the instrument or speaker cable while the amplifier power is on.

Speaker Cables:

To prevent electric shock, use “Class II Wiring” speaker cable or speaker cable with double or reinforced insulation when connecting to speaker cabinet.

t cord. Damaged power cords should

in thattheAC plug is easilyaccessible. If you do

use an

Opening the amplifier enclosure may

a shock hazard. Modification to the

uct will void your warranty. If liquid

ediately and consult an authorized service

ion.

on a firm, level

Please refer to page 10 for more instructions concerning installation.

Heat & Ventilation:

Make sure there is space provided for proper ventilation. Avoid using in extreme hot or cold locations and areas that are exposed to direct sunlight or near heating equipment. Avoid using in moist or high humidity areas. NEVER

BLOCK THE FAN VENT HOLES ON THE SIDES OF THE UNIT.

Page 5

MB SERIES

Quick Start

The MB Series amplifier is designed to be simple to operate. All controls have a well defined purpose. These directions will take you through the basics and give you a good start for setting up your sound.

1. Plug it in:

Set the power switch to Off and connect the supplied power cord, from the amplifier AC receptacle, to an AC power outlet of proper voltage and power rating (see safety information on page 5 for details).

2. Connect your cabinets:

Connect your speaker cabinets to the amplifier outputs marked Speaker. The MB features dual use speaker connections. These unique jacks allow for Speakon or 1/4” plugs to be used. Be sure not to exceed the recommended speaker load as noted below.

Maximum Recommended Speaker Loads:

One 4 Ohm, or two 8 Ohm cabinets.

3. Initial front panel control settings:

Set all EQ controls and contour knob to 12 o’clock. Set the input volume controls at 0.

5. Level and Master

Set

the Master Volume to 3 o’clock. Turn the

Input Volume knob up as you play to the desired

level. If the clip light (pad button) flashes

output more

than occasionally, press the -10db pad

in and turn the Input Volume knob up. If it

button is

still lighting often, try turning the volume down

on your bass.

Volume settings:

4. Plug in your bass:

Using an instrument (shielded) cable, connect your bass to the Input jack and press the power switch on. If you have active tone controls on your bass, turn all of the controls to the middle or flat position and turn the volume all the way up. If you have conventional, passive tone controls, turn all tone and volume controls all the way up.

Page 6

POST

PRE

MB200

INPUT

100-120V 50/60Hz

-10dB GAIN CONTOUR TREBLE HI-MID LOW-MID BASS

AC INPUT

OFF

3 4

DIRE

OFF

CT OUT

MB 200 Controls

Input: A standard ¼” input jack to connect active or passive basses using a shielded cord.

-10 dB Pad/Clip indicator: Input attenuator

button. This button is generally set to the out position except in cases where the clip LED flashes more than occasionally. It may be necessary to “pad” the input if you are using a bass with active electronics or very high output. The pad button light flashes red when the input is being overdriven. If the -10dB is pressed and the clip indicator still flashes frequently, reduce the volume on your bass.

Gain: Sets the preamp gain after the input stage. It is used in conjunction with the input pad to optimize the amplifier’s headroom.

Contour: As part of the amps active equalization the contour control decreases the mid-range frequencies while boosting low and high frequencies.

Treble: Boost and cut at 7 kHz +14 dB shelving type. Use this control to add or remove edge and definition.

Hi-Mid: Boost and cut at 1 kHz +6 dB. A “Q Optimized,” band pass type, this works on lower string harmonics and effects the punch of your sound.

Low-Mid: Boost and cut at 250Hz +6dB/-10 dB. A “Q optimized” band pass type, this works for main body of your sound.

Bass: Boost and cut a 60Hz +10 dB, shelving type. This is used to control the low end push. turned up.

Power Switch: Turns the amplifier on and off. In the on position, the ring surrounding the button will light red during power up then changes to

POWER

OFF

MB200

AUX IN

HEADPHONES-1

T-2

LINE OU

8 9

200W @ 4 OHMS CLASS 2

12 13 14 15

indicating the amp is ready for normal

blue, operation. heat ring This

Should the amp experience a fault (over or over current) the amp will mute and the will light red until the condition is corrected.

LED turns off when the power is switched off. This turns the amp off but it does not completely

disconnect the power from the AC

mains.

Receptacle: The detachable power cord

plugs in here.

Balanced

balanced

Direct Out: This electronically

output allows a direct connection to a P.A. system. Pre/Post EQ Button: This button switches the

direct out signal to be before or after the EQ.

In: This 1/8" input for a CD or MP3 player

Aux

allows

the user to monitor an external audio

source

Headphone/Line

output

allows the user to send a direct (unbalanced) inputs

such as personal multitrack recorders. This connection Unswitched,

out: When switched, this

line out to devices with unbalanced

requires a shielded patch cord.

this headphone jack can be used to

monitor your playing with headphones.

Headphone/Line

out switch: This switch toggles

the output from headphone to line out.

Speaker:

Delivers impedances load Ohm speaker

Power amp output to speaker cabinet.

200w into 4 Ohm loads. Lower

such as 8 Ohms or 16 Ohms and no

are acceptable. One 4 Ohm speaker and one 8

speaker is not recommended. This unique

output allows you to use a ¼” plug or the

high current, twist-lock Speakon connecto

SPEAKER

WIRING

Page 7

MB SERIES

Sound Tips

The MB Series has several unique features which, if used properly, will obtain the sound you have been searching for.

The Equalizer:

The equalizer is used to fine tune your sound. When adjusting making adjustments, do it just a little at a time. These are active circuits and small changes can make a big difference in your sound. With a little experimentation you will find that this equalizer is very easy to use and provides you with a large variety of great sounds unique to GK.

Contour:

Increasing the Contour level will scoop out midrange frequencies while boosting the highs and lows. The sound, once again, is unique to GK and available on any other Bass amp. Lower contour settings are recommended for midrange clarity at higher playing levels.

Direct Out:

The MB Series provides a low noise, high quality balanced direct output for connection to PA and recording consoles. A ground lift switch is included to remove hum and buzz when connecting to equipment powered by a different ground system.

With the pre/post EQ switch set to “pre” (out), the direct output signal is fed directly from the input stage providing a low noise output superior to external direct boxes and impedance transformers. In the "pre" position, the direct output signal is only effected by the Input Volume, -10db pad and mute. This allows you to adjust your tone and volume on stage without changing the direct output signal level and confusing your sound man.

Changing the pre/post EQ switch to “post” (in), sends the "GK sound" (EQ settings etc.) and preamp response to the direct out jack. This gives you complete control over the direct out’s tone and volume.

Page 8

MB SERIES

Installation:

insure proper operation and to avoid potential

To safety

hazards, place the unit on a firm, level

surface

Ventilation

Make ventilation. located amplifier enclosed

movement within the enclosure to allow

air proper information.

cold locations, and areas that are exposed to

or direct moist or humid locations

Remember, power amplifiers generate heat. The ventilation designed placing dissipation long-term the other equipment

Moving the Unit:

Before

interconnection cords with other

any components, the unit from the AC outlet.

certain that proper space is provided for

Never block the fan vent holes

on the sides of the amplifier. If the

will be installed in a rack or other

area, make sure that there is sufficient

cooling. Consult your dealer for more

Avoid installation in extremely hot

sunlight, or near heating equipment. Avoid

slots on the enclosure are specifically

to remove this heat. Blocking or

other electronic equipment near the heat

system may possibly affect the

reliability of both your amplifier and

moving the unit, be certain to disconnect

and make sure that you disconnect

Maintenance:

Your

new amplifier is rugged. It was built to give

a lifetime of trouble-free operation, if it is

you operated contained required your recommend scratches and road wear.

Packaging:

The carton and packing materials used in shipping you cushion it during transport. carton the event you move, or the amplifier needs repai

in accordance with the instructions

in this manual. The only maintenance

is cleaning. If you are going to move

amplifier around frequently, we

a road case to protect it from

r new amplifier were specifically designed to

from the shocks and vibration that occur

We suggest that you save the

and packing materials for use in shipping, in

Cleaning

When cloth. other abrasive of the unit.

the unit gets dirty, clean only with a dry

Never use benzene, thinner, alcohol, or

volatile cleaning agents. Do not use

cleaners, as they may damage the finish

metal parts. Avoid spraying insecticides near

Page 9

MB SERIES

Tech Talk

Characteristics of the MB Series:

The MB Series is a flexible, state-of-the-art amplifier designed to deliver maximum performance while remaining small, lightweight and simple to operate. This is accomplished through a few, very important features:

·Class D power supply and power amp.

·Four, Bass specific bands of active equalization for precise tone control.

·Balanced direct output eliminates the need for a direct box.

·Continuously variable fan cooling.

Equalization:

Standard tone controls and graphic equalizers give you plenty of variation, but they don’t provide what the instrument really needs. The fact is, graphic equalizers are intended for room equalization. The equalization in Gallien-Krueger amplifiers reflects 40 years of continuous development and refinement.

The GK equalizer is unique to the industry, it’s not just a normal four band equalizer, each section is a special circuit optimized to perform a Bass specific job in its range of operation.

Cool Running = Reliability:

To cool the amp when its being driven hard, we’ve designed

a temperature sensitive fan cooling system. When

amp is under a light load, the fan is off or running at a

the low

speed, reducing fan noise. As the amp works harder,

the fan speed increases to keep everything cool.

rotection Circuitry:

Smart P

MB Series protection circuitry constantly monitors for

The unsafe

operating conditions such as short circuits, miss-wired ventilation, addition, the output changes muted activates the are described GK directly for technical advice.

In Closing:

You should now have a thorough understanding of how your it reading times! ww sales@gallien.com.

speaker cables, blown speakers, improper

and incorrect speaker configurations. In

protection is provided during power up/down. If

MB Series senses any unsafe operating conditions, the

signal is immediately muted and the power light

from Blue to Red. The amplifier will remain

until the fault is removed. If the protection circuit

while playing, turn the amplifier off and check amplifier speaker output connections. Be sure that you not exceeding the maximum recommend load

in this manual. If the problem persists, contact

new MB Series amplifier works and what advantages

can offer you in getting “your” sound. We thank you for

the Owner’s Manual and wish you the best of

Please send us your comments via

w.gallien-krueger.com or email us at

These sections are wired in series, so they add to one another creating a tremendously flexible equalizer, that sounds natural at any setting. Now it is possible to obtain the sound you desire.

Contour:

The Contour is used to completely revoice the amplifier.

control tunes between two different shaping circuits,

This

greatly different responses. With the control all the

with

up, the low end is slightly boosted, the mids are

way

and the high end is pushed up. This is only found

dropped in GK amplifiers.

Page 10

Specifications

MB200 SPECS

AUX IN

PRE

POST

INPUT

DIR ECT

OUT

GAI N

CON TOUR

OFF

AM P

BLOCK DIAG RAM

4 B AND

OFF

-10 dB pad

AM P

HEAD

PHONES

LINE

OUT

1/4”

SPEAKON

COMBO

JACK

INPUT

-10dB pad OFF

GAIN

MB200

BLOCK DIAGRAM

CONTOUR

OFF

MB200 SPECS

4 BAND

AMP

HEAD

PHONES

LINE

OUT

AUX IN

POST

PRE

DIRECT

OUT

1/4”

SPEAKON

COMBO

JACK

Output Power:

140W @ 8 Ohms,

200W @ 4 Ohms. Input Section: Maximum Input Level With -10dB pad Input Impedance Direct Output Impedance Aux-In Input Impedance

0.6V Rms

1.6V Rms

1M Ohms

500 Ohms

100K Ohms

Equalizer:

Bass Lo-Mid Hi-Mid Treble

+/-10dB @ 60Hz

+6dB/-10dB @ 250Hz

+6dB/-10dB @ 1KHz

+/-14dB @ 7KHz

Voicing Filters:

Contour

+2dB @ 50Hz/ -10dB @ 500Hz/

+3dB @ 7 KHz

Noise: -90 dB reference to 200W/140W, “A” Weighted. Amplifier Protection:

Full short circuit, thermal and RF protection. Stable into reactive and mismatch loads. Five second muted warm-up.

Cooling:

Variable speed fan.

MB200

Owners Manual

Part # 160-0630-A

Dimensions: Height: 2.50” [63.50mm] ( With Rubber Feet)

1.75” [44.45mm] ( Without Rubber Feet) Width: 7.75” [196.85mm] Depth: 8.00” [203.20mm]

Weight: 2.00 lbs. [0.91 Kg]

Power requirements:

U.S.A/Canada 120V/60Hz. 240W(full power), 48.6W (average power) Europe 230V/50Hz/60Hz 240W(full power), 48.6W(average power) Japan 100V/50Hz 240W(full power), 48.6W(average power)