Quick Start
For those of you who prefer to burn now and read later, we've included this Quick Start reference section to
help you do it right the first time.
Connect Cables: Make sure the power is off before connecting or disconnecting the cable to the J-12. Using
the included standard 5-pin DIN cable (MIDI-type), connect the J-12 to the jack on the rear panel of the JM
150, JM 250, 2112 SGS, GSP-2101, Valve FX or Legend II where labeled FOOT CONTROLLER. DO NOT
CONNECT ANYTHING BUT THE J-12 TO THE FOOT CONTROLLER JACK ON THE REAR
PANEL OF THE JM 150, JH 250, 2112 SGS, GSP-2101, VALVE FX OR LEGEND II! DOING
OTHERWISE MAY DAMAGE THE DEVICE. IF MIDI CONTROL IS DESIRED, CONNECT THE
MIDI DEVICE(S) TO THE MIDI IN JACK.
Apply Power: When you turn on the JM 150, JH250, 2112 SGS, GSP-2101, Valve FX or Legend II, the foot
controller will also power up.
Select Program : Begin playing your guitar and choose any program using the footswitches or (2101, Valve
FX or Legend II only), by pressing the Program footswitch once and then entering the desired program num-
ber using the number footswitches. Once the program has been selected, the unit will change to that program.
Select Bank (JM 150, JH 250, 2112 Only): You can scroll through the 19 Banks of the JM 150, JH 250,
2112 by simply pressing either the <Bank Up> or <Bank Down> footswitch on the J-12. Once a bank is
selected, press one of the flashing footswitches and the 2112 will move to the selected bank.
Introduction
Congratulations, and thank you for your purchase of the J-12 Foot Controller. The J-12 is a powerful remote
foot controller that allows you to take full advantage of all the high-performance real-time control capabilities
of the Johnson Amplification JM 150, JH 250 Integrated Modeling Amplifier. The J-12 Foot Controller can
also be used with the Digitech 2112 SGS, GSP-2101, Valve FX or Legend II Guitar Processors. The unit is
equipped with ten programmable footswitches, plus dedicated bypass and Program / Bank selector switches,
along with two built-in expression pedals.
This owner's manual is your key to understanding the powerful world of the J-12. Read it carefully. After
you've had time to familiarize yourself with the unit, try experimenting with unusual continuous controller
Parameter links. You may get some interesting results. Johnson Amplification is always looking for new ideas,
so if you feel that you’ve created something unique, send us your ideas at the address on the back cover of this
manual. Good luck, and thank you for choosing Johnson Amplification.
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Quick Start and Introduction
J-12 Owner’s Manual
