Line 6 JM4 manual Naming Restrictions, Routing Goes To Mono, Audio Hiss, Aux Track Distortion

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Appendix : FAQ

Naming Restrictions

Q:Whenever I import a WAV file from my computer into the JM4, why does it always cut off the last part of the name?

A:The JM4 has an 8-character name limit. Although your original file name will remain unchanged on your PC, it’s a good idea to use shorter names whenever possible.

Routing Goes To Mono

Q:I recorded a vocal on the Mic/Aux track, and a guitar on the Guitar track. I’m routing my vocal to a P.A. and my guitar to a guitar amp. I’d like to slow the tempo down a bit then overdub a harmony guitar part, but when I do so, all my tracks go to mono, routed to both the P.A. and guitar amp. How can I avoid this?

A:When applying Time Stretch to two different tracks, they will be summed to mono. This is because the Time Stretch DSP can only operate on one mono track at a time, so your routing was summed to mono. To return to normal routing, you must first Save your current recording to internal memory with Time Stretch applied.

Audio Hiss

Q: Sometimes I hear unwanted hiss on my audio output. How can I eliminate this?

A:Make sure your mic Volume knob is off when not using the Mic Input. JM4 inputs are ‘live’ at all times, so if no mic is plugged in, you may hear hiss from the mic preamp.

Aux Track Distortion

Q:When I use the Aux track for recording my guitar track and I add Aux FX Presets, my guitar sometimes sounds distorted when I play it back; it sounds fine while recording. What’s up?

A: When recording to the Aux track, you’re essentially in “input monitor” mode,

A•3

meaning you’re hearing your guitar’s input, not its output. When you add Aux FX like

 

EQ, for example, you’re also boosting level. This can result in distortion that you only

 

hear on playback. The cure for this is, if you’re recording on the Aux track and you’re

 

boosting your level with Aux FX, simply lower your input level to avoid distortion.

 

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Contents JM4 Looper Please Note Table of Contents Page SD Browser Updated FeaturesInput Levels Playback LevelsNormal Menu ItemsPage Format Card SD Card DetailsTransfer Recording From Card Transfer Recording To CardImport WAV File From Card Save Rec Mix As WAV To CardTransfer All From Card Transfer All To CardFirmware Version Firmware UpgradePage Time Stretch/Pitch Shift Time Stretch & VarispeedVarispeed Pitch/Tempo PreviewRecording Restrictions Page Jam Control Mode Footswitch ModesRecord Select Mode Loop FX ModeAmp Model / FX Mode Guitar Preset ModePage Saving WorkflowRecording WAV Files JAM FilesStraight Groove Loops Beat+Gtr Available Recording Time Appendix FAQDuplicate WAV Files Time StampTime Stretch Won’t Work a Second Time Loop Overdub VolumeQuick Capture Can’t Overdub To a Time Stretched RecordingRouting Goes To Mono Naming RestrictionsAudio Hiss Aux Track DistortionSD Card Backup Details