User manual MARSHALL JVM215C COMBO

[. . . ] ENGLISH From Jim Marshall I would like to thank you personally for selecting one of our new `JVM' amplifiers. Since I started Marshall Amplification in 1962 I have witnessed some incredible breakthroughs and advances in amplifier design technology, such as master volume amps, channel switching, reverb, effects loops, MIDI technology, speaker emulation and digital effects processing, to name just a few. These may all seem commonplace features nowadays but that certainly wasn't always the case. However, the same values that were present in the first Marshalls are still very much here today: meticulous workmanship, reliability, stylish looks and, above all, great Marshall tone. [. . . ] OVERDRIVE ORANGE MODE: This adds another gain stage to the `Overdrive Green' circuit, resulting in a sound that's perfect for singing leads and hard rock/heavy metal tones. OVERDRIVE RED MODE: Adds more gain to the `Overdrive Orange' for a high gain Marshall sound. ENGLISH 5 Front Panel Operation Channel Section Pressing a channel button has two functions: When coming from a different channel it recalls the last setting in the new selected channel. ENGLISH When pressing in the same channel it cycles the modes: GREEN > ORANGE > RED > GREEN. . . Example: You are in OVERDRIVE ORANGE with FX + REVERB and you press CLEAN. The amp switches to the last Clean mode you had (let's assume it was CLEAN GREEN with REVERB). If you press the OVERDRIVE switch you go back to OVERDRIVE ORANGE with FX + REVERB. If you now press OVERDRIVE again, you go to OVERDRIVE RED with whatever FX, MASTER and REVERB settings you had last time you were in this mode. Pressing REVERB (7) switches the reverb ON and OFF in the current channel. Pressing FX LOOP (4) switches the parallel FX loop ON and OFF in the current channel. Connection to the amplifier requires a standard mono 1/4" jack to jack cable. Any guitar lead will work and practically there should be no limit in its length. When the front panel FOOTSWITCH / MIDI PROGRAM switch is off, the footswitch operates in safe mode and executes the commands the moment the switch is pressed down. If you enter the FOOTSWITCH PROGRAM mode (LED red) you will be able to program the footswitch but nevertheless the footswitch and the amplifier will remain fully operational with the only difference that the commands will be executed when releasing the footswitches, as opposed to the normal mode. Each of the individual footswitches has 2 modes of operation: preset store and switch store. In preset store mode, any of the footswitches can be configured to store the current amplifier status. The current channel, master, FX and reverb status will be stored and recalled when the respective footswitch is pressed. To store the current status simply: Set the amplifier to FOOTSWITCH PROGRAM mode (red light ON). The FX footswitch LED will flicker a couple of times indicating that the preset has been stored. In switch store mode, any of the footswitches can be configured to replicate the front panel switches and the amplifier will react exactly in the same way as when you operate them on the front panel. All the front panel switches can be mapped to any of the footswitches without any limitation. The only exception is the FOOTSWITCH / MIDI PROGRAM switch which cannot be assigned to the footswitch. To assign any of the front panel switches (except FOOTSWITCH / MIDI PROGRAM) to any of the footswitches simply: Set the amplifier to FOOTSWITCH PROGRAM mode (red light ON). While holding the footswitch down, in less than 3 seconds, press the front panel switch you want to map. [. . . ] Release the switch and the footswitch will synchronise with the amplifier. The factory default is as follows: FSW #1: Clean/Crunch Mode FSW #2: Overdrive Mode FSW #3: Master FSW #4: Reverb Hints Hint 1: It is possible to use different modes in the same channel with different volumes to avoid imbalance between mode levels. To do this simply create 2 presets in the footswitch assigning MASTER 1 or MASTER 2 to any of the modes. If you do not connect any effect to the SERIAL / PARALLEL FX LOOP the MIX control can be used to act like an extra volume control in any of the channels. Hint 2: To have a tuner output muting the amplifier, connect the tuner to the FX send and select the Clean channel. [. . . ]