Gallien-Krueger MB200 Owner'S Manual Download Page 9

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. 

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. 

This control tunes between two different shaping circuits, 

with greatly different responses. With the control all the 

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

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

in GK amplifiers.

Cool Running = Reliability:

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

designed a temperature sensitive fan cooling system. When 

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

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

the fan speed increases to keep everything cool.

Smart Protection Circuitry: 

The MB Series protection circuitry constantly monitors for 

unsafe  operating  conditions  such  as  short  circuits, 

miss-wired  speaker  cables,  blown  speakers,  improper 

ventilation,  and  incorrect  speaker  configurations.  In 

addition, protection is provided during power up/down. If 

the MB Series senses any unsafe operating conditions, the 

output  signal  is  immediately  muted  and  the  power  light 

changes  from  Blue  to  Red.  The  amplifier  will  remain 

muted until the fault is removed. If the protection circuit 

activates while playing, turn the amplifier off and check 

the amplifier speaker output connections. Be sure that you 

are  not  exceeding  the  maximum  recommend  load 

described in this manual. If the problem persists, contact 

GK directly for technical advice. 

In Closing:

You should now have a thorough understanding of how 

your new MB Series amplifier works and what advantages 

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

reading  the  Owner’s  Manual  and  wish  you  the  best  of 

times!  Please  send  us  your  comments  via 

www.gallien-krueger.com 

or 

email 

us 

at 

[email protected].

Summary of Contents for MB200

Page 1: ...MB 200 OWNER S MANUAL ...

Page 2: ...ntact your local dealer or GK as soon as possible Gallien Krueger Inc 2234 Industrial Drive Stockton CA 95206 phone 209 234 7300 fax 209 234 8420 Internet www gallien krueger com Email info gallien com We wish you a lifetime of good playing and remember to always have fun 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...

Page 3: ...UR 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 Table Of Contents Safety Information __________________________ Pg 4 Quick Start ________________________________ Pg 5 Front Panel Controls ________________________ Pg 6 Sound Tips ________________________________Pg 7 Installation and Maintenance ____________...

Page 4: ... 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 compliant cord Damaged power cords should be replaced immediately When setting up make certain thattheACplugiseasilyaccessible Ifyoudo not intend to use the amplifier for a considerable length of time disconnect the plug from the AC Mains Socket Do ...

Page 5: ...s 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 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 ...

Page 6: ... 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 blue indicating the amp is ready for normal operation Should the amp experience a fault over heat or over current the amp will mute and the ring will light red until the condition is corrected This LED turns off wh...

Page 7: ...ed 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 stag...

Page 8: ... and the other equipment Moving the Unit Before moving the unit be certain to disconnect any interconnection cords with other components and make sure that you disconnect the unit from the AC outlet Cleaning When the unit gets dirty clean only with a dry cloth Never use benzene thinner alcohol or other volatile cleaning agents Do not use abrasive cleaners as they may damage the finish of metal par...

Page 9: ... control all the way up the low end is slightly boosted the mids are dropped and the high end is pushed up This is only found in GK amplifiers Cool Running Reliability To cool the amp when its being driven hard we ve designed a temperature sensitive fan cooling system When the amp is under a light load the fan is off or running at a low speed reducing fan noise As the amp works harder the fan spee...

Page 10: ... Bass Lo Mid Hi Mid Treble Voicing Filters Contour 140W 8 Ohms 200W 4 Ohms 0 6V Rms 1 6V Rms 1M Ohms 500 Ohms 100K Ohms 10dB 60Hz 6dB 10dB 250Hz 6dB 10dB 1KHz 14dB 7KHz 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 ...

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