Johnson Amplification JM60 - Manual (Page 21)

Plate
Plate reverb is an effect that was designed in recording studios in an attempt to recreate an acoustic reverb. It was a large metal plate that
had a driver attached to one end of it, and a pick up on the other end. The signal was fed in to the driver, which in turn caused the plate to
vibrate. These vibrations were then received by the pick up and fed back into the mix.
Hall
The Hall reverb is an effect that simulates the acoustic environment of an actual room. It gives the listener the illusion that the music is being
performed in an empty room. When a sound is heard in an empty room it reflects thousands of times off of the surfaces in the room such as
the walls and the floor. Each reflection reaches the listener at different times. This results in giving the sound a certain warmth and depth.
Spring
A Spring reverb is another effect designed to try and recreate the ambiance of an acoustic reverb. It was an actual spring. The signal was fed
in to one end of the spring causing the spring to vibrate. The signal was then taken out of the other end of the spring and mixed back in to
the signal.
Reverb - The reverb knob adjusts the volume of the reverb effect.
Storing/Copying a Preset
After you have edited a preset, you must save your new sound otherwise the JM60/JM120 will erase the changes that you had made and
revert back to the original sound of the preset. You can save your modifications to any one of the 27 user locations. When you have made all
of the changes that you intend to, and you are happy with the sound that you have created, follow the steps outlined in this section to store
your new sound. The procedure for storing a preset, and for copying a preset to a new location is the same.
Note: Changing presets or turning the power off to the JM60/JM120 before storing your edits will erase all changes
that you had made.
To store or copy a preset
1. Press the store button once. The Store button will light and the numeric display will start flashing.
2. Use the Select knob to choose the preset location that you wish to store your modifications to.
3. When you have the desired preset location flashing in the display, press the Store button again. Your sound will then be recalled
every time that you select that preset number.
To abort the store function, press the Manual button once. The JM60/JM120 will return to the performance mode with your edits still intact.
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Section 2 - Using the Marquis JM60/JM120