Assessments - 4, GPA: 3.8
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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. 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 lower 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 Control This control adjusts the response selected by the Voice Shift control. 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 32 4 5 6 7 8 9 10 11 12 13 14 15 16 17 22 23 24 ENGLISH ENGLISH ENGLISH 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 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. 2. SPEAKER OUT Socket(s) There is one speaker jack socket on the MB60 and MB150 (marked ‘INTERNAL 4.’). 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. 3. FOOTSWITCH Jack Socket Connect the supplied footswitch here. 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. 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...
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