H9 strange behaviour

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- July 5, 2020 at 5:55 pm #115995
  
  Zsolt57
  Participant
  
  Hi everyone
  
  I think I miss something ….
  
  I am trying to connect an instrument (bass guitar) and a microphone (sm58) to Input 1 & 2.
  
  When I plug in either one, everything is fine – but as soon as I plug in the second jack, only the effects work. When I switch to bypass, both mic and bass are muted.
  
  ??
  
  Every suggestion will greatly be appreciaterd.
  
  Thanks
  
  Zsolt
- July 5, 2020 at 6:39 pm #155310
  
  nickrose
  Moderator
  Eventide Staff
  
  Not quite sure what is happening, in particular don't know what yoyu mean by "only the effects work".
  
  That aside, I'll make a number of observations:
  
  1) Most H9 effects are mono/stereo, meaning they expect a single mono instrument or a single stereo instrument. Using two different instruments may be interesting, but probably not useful.
  
  2) A dynamic microphone like SM58 has a very low impedance, so if it ends up in parallel with the bass it will short it out, and you may get almost nothing.
  
  3) A dynamic microphone like SM58 has a very low output level, so unless you run it through a preamp first, it will be inaudible, or drowned in noise or both.
  
  So, for all the above reasons, I would suggest you rethink.
- July 5, 2020 at 7:48 pm #155311
  
  Zsolt57
  Participant
  
  Thanks Nick
  
  I understand what you say.
  
  The purpose is, to route two different instruments to a looper – alternating use of course.
  
  SM58 has low output level, yes, although it is not inaudible. But I’d need a preamp indeed.
  
  “single mono or single stereo instrument” – I stumbled over that. Thinking of a two channel device on a hot sunday afternoon … and yes, I’ll have to rethink.
  
  Zsolt
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