I was helping out a friend today who has been struggling with his JM4.
It sounds great through the PA, but when he tries to use it with any of his amps, there is LOUD hiss, even before turning up the volume on the guitar. We tried assorted setups of going into the effects loop, or using the guitar out instead of the stereo outs.. but all had their version of either killing the tone, or noise.
I do have some other questions... but simply to start..
He has a Carvin 1 x 12 tweed combo amp that he wants to use with the looper. Are there any special settings? I have a Helix and there are certain output and input level settings to set based on how you want to connect to an amp so I'm thinking this is the step he's missing.
Additionally, He wants to send a signal to his amp (for his stage monitor) and the PA. He's currently micing, but it seems like he should be able to get line out somehow.
Finally, how does one ByPass the JM4? The Carvin is a great sounding amp all by itself. There are some tunes where he doesn't want the signal going through the jm4 at all, just bypass direct to the amp.
Thanks in advance... and yes I looked in the manual and seached... I guess I wasn't asking the right questions because I came up empty.