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  • OttovanZanten
    Contributor - Level 1

    My Neutron is behaving quite strangely. When I plug something in to the Att2 Out it changes the sound quite a bit. It's like it's changing the Pulse Width. If I then connect the same or a different patchcable to the Att1 In it changes even more. It's like it turns down the PW2 from 2 o clock to 8 o clock.

    I can turn it by hand, but it seems like unintentional behavior and sometimes it changes my sound quite drastically and when you have a complicated patch it can be quite tricky to find out why your synth is suddenly making almost no sound even though you just routed something to the Attenuators that are turned all the way down. You would expect to change at all untill you start turning the Attenuators.

    I added a video to demonstrate what's happening/ I would really appreciate it if somebody that owns a Neutron can try doing what I did here and let me know if this is how they all are of mine is somehow malfunctioning.

    I just updated from Firmware 1.0 to 2.02 and it didn't change anything by the way.

    0 343
    • OttovanZanten

      Yes, that's normal for Neutron.

      ATT2 Out is Normalled to both ATT1 In and Pulse Width in.

      When you insert a cable, ATT2 is no longer connnected to ATT1 In and Pulse Width, but ATT1 In and Pulse Width In (both oscillators) are still connected together.

      Technically (and this point can be safely ignored) the output from ATT2 was providing an effective ground and preventing ATT1 In and Pulse Width from interacting.

      Anyway, connecting inputs together produces "unpredictable results", as you discovered.
      Also the pots for pulse width are providing what Behringer claim is a "useful" DC offset to the input of ATT1

      Behringer advised me not to use ATT2 Out when needing reliable pulse width! They didn't supply a workaround.

      The normalling of ATT2 OUT to ATT 1In is of course not only a cause of issues, it's also somewaht useless. You need to patch the connection anyway in order to cancel the normalisation to Pulse Width.

      Your workaround is to patch some 0V voltage from the patchbay to the PW in socket. SLEW Out does the trick





      • November 16, 2019