Marshall Amplification MB150 User's Manual
Contents
1. Mar Aapchell y gt Ml Fe From Jim Marshall would like to thank you personally for selecting one of our new MB Bass amplifiers d As a musician myself fully understand the necessity of achieving the right tone and feel to help inspire musicians to reach their full creative potential be they aspiring beginners or more skilled players With this in mind set my experienced R amp D team the task of designing a new range of affordable bass amplifiers that A truly captured the essence of the Marshall sound Utilising new technologies some of which were developed for our critically acclaimed AVT range the new MB Series raises the standard for what can be expected from a value for money f range of bass amplifiers and defines a new benchmark Like all the amplifiers in my new MB range this amp was completely designed and engineered in the UK and the most rigorous quality control procedures ensure that it meets the standard of build you have come to expect from all Marshall products Whether this is your first ever Marshall or is the latest addition to your arsenal of amps the tone flexibility and feel of this compact rugged amplifier will deliver the goods from bedroom to backstage wish you every success with your new Marshall Welcome to the family Yours Sincerely Cc Dr Jim Marshall OBE and daughter Victoria Managing Director 1 MB450H MB4210 amp MB4410 Front Pan2. MODERN CLASSIC COOCO 0 0 06000 10 EB 15d8 300Hz TE 1598 1598 1548 1548 10 10 N VOICE VOLUME BASS MID FREQ MIDDLE TREBLE GAIN BobsT VOLUME BASS SHIFT VOICE TREBLE
3. gain worthy of the greatest rock bass player and heavy tone that is expected from a Marshall amp 11 GAIN Control This control sets the operating level of pre amp If you require a clean bass sound turn this control up until your bass just starts to distort and then back it off slightly If on the other hand you would like a distorted sound simply turn up the Gain control and drive the ECC83 valve until the required amount of distortion is achieved creating the warm Marshall tone 12 BOOST Switch The Boost switch increases the gain of the classic channel When the switch is engaged the whole channel gain is raised making it much easier to get an overdriven sound 13 VOLUME Control Classic Channel This control adjusts the volume of the Classic Channel MASTER ___ VOLUME CDIN HEADPHONES 14 BASS Control Turning the Bass control will affect the amount of low frequencies or bottom end in your bass guitar tone Rotating this clockwise will increase the amount of lower tones generally making your bass sound deeper Turning this control anti clockwise will reduce the bass frequencies in your tone producing a reduction in bottom end thud 15 VOICE SHIFT Control This 3 position control adjusts the overall tonal voicing of the amplifier Position 1 tailors the response of the amplifier for smooth low end restrained lower mids and mild high end lift to give the classic vintage valve bass tone In position 2 the lowe
4. 0W safely into 2ohm loads However impedances lower than 4 ohms together with high signal levels will produce more internal heating which may trigger the thermal protective muting EUROPE ONLY C Note This equipment has been tested and found to comply with the requirements of the EMC Directive Environments E1 E2 and E3 EN 55103 1 2 and the Low Voltage Directive in the E U EUROPE ONLY Note The Peak Inrush current for the MB450H MB4210 and MB4410 is 28 amps The Peak Inrush current for the MB150 is 30 amps The Peak Inrush current for the MB60 is 13 amps Follow all instructions and heed all warnings KEEP THESE INSTRUCTIONS FOOTSWITCH BALANCED LINE OUT WARNING DO NOT OBSTRUCT VENTILATION GRILLES ATTENTION ne PAS OBSTRUER LES GRILLES DE VENTILATION Suggested Settings Here follows some sample settings to act as starting points from which to develop your own sounds N B Volume should be adjusted to taste Jazz MODERN CLASSIC 06000 0 0 00000 do ase 1848 00h 16Hz 1598 1568 sde N VOICE VOLUME BASS MID FREQ MIDDLE TREBLE GAIN ar VOLUME SHIFT VOICE TREBLE OUT Funk MODERN CLASSIC 1548 300 kHz 150B 41508 a VOLUME BASS MID FREQ MIDDLE TREBLE si Boost VOLUME SHIFT VOICE TREBLE Classic Rock MODERN CLASSIC AA A AE Jo 15 1508 1SkHZ 1508 1548 B 1598 von VOICE VOLUME BASS MID FREQ MIDDLE TREBLE U GAIN Bost VOLUME SHIFT VOICE TREBLE OUT Alternative Rock
5. el Features MODERN WELLEN 0 0 o we INPUT a e VOLUME BASS MID FREQ MIDDLE CLASSIC o AB 41608 goohz AK 1548 A ER 18dB o TREBLE L ar ERE GAIN er VOLUME MB60 amp MB150 Front Panel Features MODERN CLASSIC o 00000 AN 1548 HE OH 18kHz 154B 1598 154B 41808 es 10 o INPUT m E VOLUME BASS MID FREQ MIDDLE 1 INPUT Jack Socket Jack input for your bass guitar Use a good quality guitar cable i e one that s screened shielded to help prevent noise interference and unwanted feedback 2 ACTIVE PASSIVE Switch This push switch allows you to change between Active and Passive instruments The gain is reduced 6dB when in Active position MODERN CHANNEL The Modern channel hits those super crystal clean notes when clarity is a must 3 VOLUME Control Modern Channel This control adjusts the volume of the Modern Channel 4 BASS Control Turning the Bass control will affect the amount of low frequencies or bottom end in your bass guitar tone Rotating this clockwise will increase the amount of lower tones generally making your bass sound deeper Turning this control anti clockwise will reduce the bass frequencies in your tone producing a reduction in bottom end thud 5 MID FREQUENCY Control Constitutes a semi parametric equalizer together ML MODERN TREBLE Ue am CLASSIC GAIN all VOLUME with the Middle control It adjusts the centre frequency where the Middle control takes af
6. etween Modern and Classic channels The MB450H MB4210 amp MB4410 have a twin footswitch which also switches the Blend feature 4 PRE POST Switch Selects the signal available at the Balanced line out When in PRE position the buffered and level adjusted input signal is present at the DI output The signal before the Master potentiometer is made available at this connector when in POST position Technical Specification 5 BALANCED LINE OUT The Line Out Jack can be used for connection to recording equipment for direct recording or for connection to a P A system 6 RETURN Jack Socket This is where you connect the OUTPUT of the effects processor you are using in the effects loop 7 SEND Jack Socket If you want to use an external effects processor in your amp s built in Series FX effects loop this is the jack you connect to the INPUT of the unit you are using f MB450H MB4210 MB4410 MB150 MB60 Power RMS 4 Ohms 300W 300W 300W 150W 60W Power RMS 2 Ohms 450W 450W 450W Pre amp Valve ECC83 ECC83 ECC83 ECC83 ECC83 Bass Guitar Input Impedance 1MQ 1MQ 1MQ 1MQ 1MQ CD Input Impedance 10kQ 10KQ 10kO 10kO 10kQ Emulated Output Level 4dBu 4dBu 4dBu 4dBu 4dBu Weight 15kg 33kg 51kg 30kg 23kg Size mm W H D 630x220x235 630 x 535 x 280 630x720x410 580x585x355 580x505x325 with extension cabinet Safe operating levels The MB450 MB4210 and MB4410 amplifiers are designed to deliver 45
7. fect 6 MIDDLE Control The middle frequencies tend to effect the fatness or body of the tone The frequency of the middle band is adjusted by means of the Mid Freq control Usually this control will be used to remove mids rather than increase them making the bass sound rounder and fuller Increasing the mids usually makes the bass sound boxy 7 TREBLE Control By adjusting the Treble control you can add or take away the higher frequencies in your bass tone By increasing the amount of treble you will make your tone brighter ideal for more percussive playing styles 8 COMPRESSOR Switch amp LED This switch turns the Compressor control on and off When the switch is in the Compressor control is active and the LED will be illuminated green 9 COMPRESSOR Control The Compressor smoothes out your bass sound As you increase the amount of compression so you flatten out the peaks in the incoming signal When the compression reaches its threshold the LED will change to red 0600 00 GLAS VOICE SHIFT VOICE TREBLE E VOLUME SHIFT VOICE TREBLE CDIN HEADPHONES 10 MODERN CLASSIC Switch This push switch allows you to change between the amp s two channels Modern and Classic via the front panel When this switch is out the Modern Channel is engaged and the LED is green Pushing it in switches to the Classic Channel and the LED changes to red CLASSIC CHANNEL The Classic channel presents
8. o you ve got the perfect play along practice system 23 HEADPHONES Jack Socket For use when silent practice is the order of the day Connection of headphones will automatically shut down the internal speaker speaker cabinet 24 POWER Switch The power switch turns your amplifier on and off The LED next to the Modern Classic switch will light up when your amplifier is turned on and will not be lit when the amplifier is switched off Note The power amplifier is protected by a clipping limiter so even when you play your amp loud the sound remains clean 2 SPEAKER OUT Socket s There is one speaker jack socket on the MB60 and MB150 marked INTERNAL 40 This is where the power amplifier is connected to the internal loudspeaker It can be used to drive an external cabinet of at least 4 Ohms impedance There are 2 speaker jack SPEAKON combo sockets on the MB450H MB4210 and MB4410 They accept either a standard 1 4 jack or a SPEAKON connector and both of them carry the same signal allowing 2 cabinets to be connected simultaneously The minimum load is 2 Ohms ER WARNING risk oF HAZARDOUS ENERGY AVIS ENERGIE ELECTRIQUE DANGEREUSE SPEAKER OUT CONNECT SPEAKERS BEFORE USE x SO N MAINSINBUT MINIMUM TOTAL IMPEDANCE 2Q 625 Watts OUTPUT 300 WATTS RMS INTO 40 450 WATTS RMS INTO 20 3 FOOTSWITCH Jack Socket Connect the supplied footswitch here This enables you to change b
9. r mid is made more prominent whilst simultaneously the upper mids are subtly scooped to give a more aggressive growling quality to the amplifier s tone Position 3 introduces a gentle overall mid boost for an immediate cutting in your face tone with the mids scooped even further to give an immediate cutting sound 16 VOICE Conirol This control adjusts the response selected by the Voice Shift control 17 TREBLE Control By adjusting the Treble control you can add or take away the higher frequencies in your bass tone By increasing the amount of treble you will make your tone brighter ideal for more percussive playing styles BLEND Only on MB450H MB4210 amp MB4410 You can select a blend of the two channels either from the front panel or via the supplied footswitch 18 BLEND Switch amp LED This switch turns the channel mixing on 19 BLEND Control By adjusting this control it is possible to blend your signal between the Modern and Classic channels When you do this the LED will be illuminated red 20 VOLUME Control Blend Adjusts the volume of the Blend Rear Panel Features 1 MAINS INPUT Your amp is provided with a detachable mains power lead which is connected here Note The specific mains input voltage rating that your amplifier has been built for is shown on the back panel Before connecting for the first time please ensure that your amplifier is compatible with your electricity suppl
10. y If you have any doubt please get advice from a qualified technician Your Marshall dealer will help you in this respect Please ensure the amplifier is switched off and unplugged from the mains electricity supply before being moved panel shown is MB450H MODEL MB450H WARNING SHOCK HAZARD DO NOT OPEN TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE THIS APPARATUS MUST BE EARTHED AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR POUR EVITER LES RISQUES D INCENDIE ET DE DECHARGES ELECTRIQUES N EXPOSEZ JAMAIS CET APPAREIL A LHUMIDITE OU ALA PLUIE CONNECTER CET APPAREIL A LA TERRE CAUTION To REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL ATTENTION POUR EVITER LES RISQUES DE DECHARGES ELECTRIQUES NE PAS OUVRIR LE COUVERCLE CET APPAREIL NE COMPORTE AUCUNE PIECE SUSCEPTIBLE D ETRE REPAREE PAR VOS SOINS FAITES TOUJOURS APPEL A UN TECHNICIEN QUALIFIE POUR TOUTE REPARATION Marshall DESIGNED ENGINEERED amp QUALITY CONTR Y MARSHALL AMPLIFICATION PLC BLI MILTON KEYNES ENGLAND 21 VOLUME Master Only on MB450H MB4210 amp MB4410 Controls the overall volume 22 CD IN Jack Socket If you want to jam to your favourite CD tape or mp3 player merely connect the headphone output of your device here adjust the player s volume to match that of your guitar and hey prest
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