[solved] Bass Drum BUZZZ

Discuss Nava construction and related issues
  • p4rancesc0
    Posts 22
    Joined: Feb 7th, '14, 18:23

    Bump!
    Anyone ?
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    Data Jam
    Posts 98
    Joined: May 10th, '16, 09:12

    i didn't notice this before o_O but i also have a buzz on the bass drum (main out and single out), its also to quiet compared to other instruments...
  • peskado
    Posts 55
    Joined: Oct 26th, '14, 14:22

    Same with my BD, its also to quiet compared to other instruments
    Maybe some errors in PCB design?
  • decoder303
    Posts 89
    Joined: May 18th, '16, 19:33

    ok, at least some others also have the same problem, so there might hopefully be a bigger chance that we get at least a little bit of support..
  • peskado
    Posts 55
    Joined: Oct 26th, '14, 14:22

    I'm comparing Nava and r909 schematics
    Maybe some errors
    I checked my Nava with scope and it look like some buzz coming from IC11 pin 3
    is anybody have pictures with traces?
  • decoder303
    Posts 89
    Joined: May 18th, '16, 19:33

    IC11 pin 3 is connected to ground..
  • peskado
    Posts 55
    Joined: Oct 26th, '14, 14:22

    yes, i know
    I checked this pin with scope
    some news
    If remove IC33 and ic32 no Buzz on scope
    Maybe some errors in Noise section
  • peskado
    Posts 55
    Joined: Oct 26th, '14, 14:22

    What cd4006 in your nava?
    I used rare toshiba
  • decoder303
    Posts 89
    Joined: May 18th, '16, 19:33

    I removed one leg of r10 (input of noise) and the buzz was still there. I have to check tomorrow which 4006 I used..
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