Double Bass Ergo EUB E string issue

[Oneirogenic]

I posted this question in the Ergo megathread but I realized it makes more sense here...

Got a weird problem with my (new to me) Ergo 5(E-C). I just plugged it in for the first time last night for band practice and discovered that stopped notes on the E string decay very rapidly compared to stopped notes on the other strings. The open E does seem to be quieter and decay slightly faster than the other open strings. Anybody have any idea what this is? Dead string, setup issue, piezo setup issue? I can do recordings this evening if that will help diagnose the problem.

 

[RSBBass]

Does this happen only when plugged in (an electronics problem) or also when played un-plugged (a set up or string issue)?

 

[Oneirogenic]

It seems like when playing unplugged the E is quieter but the rapid decay either isn't noticeable or not there. I honestly thought that the E being quiet unplugged was just the nature of the beast. I will have to pay close attention to the decay while unplugged now. I will tell you it is very pronounced plugged in, almost like you immediately muted the string lightly after striking a stopped note.