Line 6 Looper JM4 - Manual (Page 24)

Workflow
5•2
All saved recording files in the JM4 use a proprietary file format called JAM. Each JAM
file contains a Guitar track, a Mic/Aux/WAV track, and a track that contains information
regarding all the appropriate settings for that recording. To view your list of saved recordings,
navigate to the Recordings tab and turn the wheel. You’ll see a list like this:
JAM Files
JM4 also uses WAV files. All Mixdown files are 16 bit 44.1 mono WAV files. Every time
you do a Mixdown to SD card, as described on Page 2•3, you’ll be rendering a WAV file
on your SD card.
A WAV file can be imported back into the JM4 for overdubbing (it will play back on the
Mic/Aux/WAV track), or it can be copied to your computer for further recording, editing
and mixing in your DAW. When you import a WAV file from your SD card, you’ll see it
listed in the JM4’s display, along with the other recordings you have stored on SD card.
You can also import WAV files created on your computer for playback and overdubbing in
the JM4. As mentioned above, each WAV file will play back on the Mic/Aux/WAV track,
leaving you an open Guitar track for overdubs. There are also ways to sync up a WAV file
imported from SD card with a JM4 Drum track, as described on the next page.
BASSFIG1
DRUMMIX1
GTRLOOP2
HARMGTRS
ANIMALS2
Think of a JAM file as a folder. Within that folder are three files that make up each
recording. Storing them as one JAM file makes it a lot easier to keep track of all your files.
You’ll see the JAM file extension if you look at your file names on your computer.
WARNING: do not change the names of your JAM files on your computer. If you do,
they may not play back properly in the JM4. To avoid issues, always name your files in the
JM4 when you first save them. Try to stay within the JM4’s 8 character limit.
WAV Files
03 00:06:1 REC #03
00 00:05:3 REC #00
02 00:10:5 WAV:WAV2BASS
01 00:07:7 REC #01