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17By .adjustingTREBLEtheControlTreble 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
(OnlyYou canonselectMB450H,a blend ofMB4210the two channels& MB4410)either from the front panel or via the supplied footswitch.
18.ThisBLENDswitch turnsSwitchthe channel& LEDmixing on.
21. VOLUME - Master
(OnlyControlsontheMB450H,overall volumeMB4210. & MB4410)
22.If youCDwantINtoJackjam toSocketyour 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
23.For useHEADPHONESwhen silent practiceJackis Socketthe order of the day. Connection of headphones will automatically shut down the internal speaker / speaker cabinet.
3Connect. FOOTSWITCHthe supplied JackfootswitchSockethere. This enables you to change between Modern and Classic channels. The MB450H, MB4210 & MB4410 have a twin footswitch which also switches the Blend feature.
4.SelectsPRE/POSTthe signalSwitchavailable 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.
5The. BALANCEDLine Out Jack LINEcan beOUTused for connection to recording equipment for direct recording or for connection to a P.A. system.
6.ThisRETURNis where youJackconnectSocketthe OUTPUT of the effects processor you are using in the effects loop.
7.If youSENDwant Jackto useSocketan external effects processor in your amp’s
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19By .adjustingBLENDthisControlcontrol it is possible to blend your signal between the Modern and Classic channels. When you do this the LED will be illuminated red.
20Adjusts. VOLUMEthe volumeControlof the Blend- Blend.
24.The POWERpower switchSwitchturns 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.
Technical Specification
| MB450H | MB4210 | MB4410 | MB150 | MB60 |
Power (RMS) @ 4 Ohms | 300W | 300W | 300W | 150W | 60W |
Power (RMS) @ 2 Ohms | 450W | 450W* | 450W* | - | - |
ECC83 | ECC83 | ECC83 | ECC83 | ECC83 | |
Bass Guitar Input Impedance | 1MΩ | 1MΩ | 1MΩ | 1MΩ | 1MΩ |
CD Input Impedance | 10kΩ | 10kΩ | 10kΩ | 10kΩ | 10kΩ |
Emulated Output Level | +4dBu | +4dBu | +4dBu | +4dBu | +4dBu |
Weight | 15kg | 33kg | 51kg | 30kg | 23kg |
Rear Panel Features
Size (mm) W, H, D | 630x220x235 | 630x535x280 | 630x720x410 | 580x585x355 | 580x505x325 |
* with extension cabinet |
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1Your. MAINSamp is INPUTprovided 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 supply. 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.
2There. SPEAKERis one speakerOUTjackSocket(s)socket on the MB60 and MB150 (marked ‘INTERNAL 4Ω’). 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.
Safe operating levels: The MB450, MB4210 and MB4410 amplifiers are designed to deliver 450W 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.
This equipment has been tested and found to comply with the requirements
EUROPEof the EMCONLYDirective (Environments- N te: E1, E2 and E3 EN
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 !
(panel shown is MB450H)
1 | 2 | 3 | 4 | 5 | 6 | 7 |
4 | 5 |