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Q: I'm trying to use my J-Station with the PC editor, but the computer can't detect the J-Station. What do I do?
A: There are a few things to check. First of all, be sure you've got the MIDI OUT of the J-Station connected to the MIDI IN on your computer and vice versa. Next, be sure the switch on the back of the J-Station is in the "MIDI" position. The diagram on the back of the J-Station can be misunderstood. The "MIDI" position is where the switch is in the position closest to the MIDI jacks. Finally, be sure you've updated the firmware on your J-Station.
Q: I read about the latest version of firmware for the J-Station on your website, but I can't figure out how to get it. How or where do I get it?
A: The latest version is bundled with the J-Edit software. Download J-Edit and install it on your PC. When the installation is complete, use the Windows start menu to go to Start --> Programs --> Johnson Amplification --> J-Updater. This program will update the firmware. Further assistance is available in the J-Updater Help file located in the same program group.
Q. How do I get rid of digital clipping in my JM150/JM250H?
A. Press "edit", use the data knob to scroll over to the amp model. Page over to the "digital level" screen, use the #1 and #3 knobs to reduce the digital level.
Q. How can I use headphones with the JM150/JM250H?
A. Run an adaptor cable from the XLR outputs to a stereo female jack. The XLR output is sufficient to drive headphones. Make sure you have the speaker emulator on.
Q How do I assign parameters to the J12?
A First, go to the parameter you would like to control. Then highlight it with the corresponding knob, press the Assign button. It will ask you to select a switch, push the switch (or CC pedal) you would like it on then press Store three times.
Q Some presets have different levels. How can I make each preset level
the same?
A You may either use the level control in the EQ section to make louder presets "softer" or you may assign the Volume pedal feature to bring the level up or down.
Q How can I assign different effects?
A Press the Edit button, using the Data wheel, scroll over to the configuration section. Select the configuration that will accommodate the number of effects desired. Then turn the Data knob one click to the right and use the #2 knob to select the desired effect. Clicking the Data once more will take you to the next effect box.
Q Am I able to disconnect the speakers and just use the XLR’s without damaging the unit?
A Yes, you are able to disconnect the speakers so you may go direct to board or to record.
Q How come when I use the XLR’s, the signal is raspy?
A You will need to turn the speaker emulator on. Press Edit, and use the Data wheel to get to the end of the signal path. When you see the speaker flashing, use the Page knob and it will take you to the speaker emulator.
Q How am I able to upgrade to a higher version software?
A There are two ways. First is from amp to amp and second is from our web site.
Q If I need a part, how would I order it?
A Please call the parts dept. at 801-566-8800.
Q If by chance, I need to reset the unit, how can I do it from the front panel?
A With the unit off, hold in the Config button then power the unit up. Let go and press the Mod button.
Q Do I have to use the J3 if I’m using the J12?
A No. The J12 will do all the functions.
Q How can I assign volume to one of the pedals on the J12?
A Press the Config button, then turn the page knob left. Highlight Vol Pedal by turning the #1 knob. The press Assign and select the CC pedal by rocking it back and forth. Then press Store three times.
Q. When I assign an effect to the expression pedal, the pedal is still controlling something else. What's wrong?
A. Remember that when assigning effect parameters to the expression pedals, that anything that was previously assigned to it will still be there. To unassign a parameter from the pedal, press "assign" twice, then use the data wheel to scroll to the parameter that you want to unassign, turn the #1 knob counterclockwise so that the display shows "available link". Press "store" 3 times to save it.
Q. My JM150/JM250H seems to be locked up, what can I do?
A. Perform a factory reset by pressing and holding in the "config" button as you power up. After about 4 seconds, release "config" and press the "mod" button.
Q Is there any tips on calibrating the J8?
A You may have to reboot the unit once or twice when using the J8 for the first time.
Q Is it possible to use the wah without the J8?
A No. You may only use the wah with the J8 pedal.
Q Am I able to access the factory presets with the J8?
A You are only able to access the user presets with the J8.
Q What types of effects could I use in the effects loop?
A Any kind of effect pedal or nominal signal processor.
Q. Why are some presets louder than others?
A. The amp modeling accurately portrays the specific levels of certain amp types. A Marshall JCM800 is louder than a Vox AC30. You can balance preset's volumes by increasing/decreasing the "level" knob and storing the preset.
Q. How do I know when the tubes need replacing?
A. Tube distortions will become "muddy" sounding when the tubes go bad.
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