Mid Tom: low volume. Hi Tom: Overdriven/ distorted...

• decoder303

  Posts 89

  Joined: May 18th, '16, 19:33

  Jul 28th, '16, 18:40

  so here are my measurements.
  
  first measurement: low tom (blue) and mid tom (red) accent signal at IC114 (pin12 and pin13):
  
  
  
  second measurement: accent signal after the OP amp at the accent testpoint, again low tom and mid tom:
  
  
  
  third measurement: env 1 testpoint low tom (blue) mid tom (red):
  
  
  
  fourth measurement: env2 testpoint low tom (blue) mid tom (red):
  
  
  
  fifth meauserment: env3 testpoint low tom (blue) and mid tom (red).
  
  
  
  and last measurement the low and mid tom at the outputs, I accidently swapped the probes, red is low tom here:
  
  
  
  the osc signals have the same level on both the low and mid tom. To me it seems that the problem is already at the multiplexer? Might also be an option to change the gain of the op amp circuit of the mid tom? Gonna give this a try later

  Last edited by decoder303 on Jul 28th, '16, 18:49, edited 1 time in total.

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decoder303

Posts 89

Joined: May 18th, '16, 19:33

Jul 28th, '16, 18:47

FactoryDefault wrote:Has anyone tried playing the toms with midi? I did this last night and I'm pretty sure the levels were closer to being equal. The mid Tom still didn't have as much resonance to it as the other two but the level was higher than when being triggered by the internal Nava sequencer.
I did this with velocity 127 for all 3 toms. Maybe someone with the mid tom issue can try this and verify what I saw?

I can try this later, but have to check how I can sequence it with midi

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decoder303

Posts 89

Joined: May 18th, '16, 19:33

Jul 29th, '16, 16:56

I did all the measurements with the step buttons pressed 2 times. Today I measured again but with the step buttons just pressed 1 time and it seems that the mid tom accent just doesn't work. how can this be fixed? is this software related? no matter if I press the step buttons 1 or 2 times at the mid tom, the volume is the same, whereas the volume changes at low and high tom depending on 1 or 2 button presses. The fault has to be before the analog part...

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