New mini xoxbox in development

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Re: New mini xoxbox in development

Post by guest » Mon Mar 23, 2020 12:03 pm

decay time for the VCA is set by R123 on the x0xheart. replacing it with a 1MA pot and 47k resistor in series would allow for VCA decay control.
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midirobot
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Re: New mini xoxbox in development

Post by midirobot » Mon Mar 23, 2020 12:11 pm

nice hint love it :sb: :sb: :sb:

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Re: New mini xoxbox in development

Post by midirobot » Tue Mar 24, 2020 6:36 am

went thru calibration so had a better look to everything
so far everything works,but the cutoff frequency seems to not have full range ..
seems to have a offset ! as when i put a negative voltage to cv in seems to have full range.
took mesure at VR1
1= 11,8v
w= 0v
2=4,8 v
looks like it doesn't go back to 0v cutoff when fully closed.

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Re: New mini xoxbox in development

Post by guest » Tue Mar 24, 2020 6:39 am

yes, thats part of the original 303. if you want to increase the range, reduce (or remove) R47 on the x0xheart.

glad to hear its working!
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midirobot
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Re: New mini xoxbox in development

Post by midirobot » Tue Mar 24, 2020 7:11 am

nice work sounds good,really ! thanks
so removing R47 is ok,or do you advice a value ?

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Re: New mini xoxbox in development

Post by guest » Tue Mar 24, 2020 7:19 am

i would probably try 5k first, and see how that goes. the quickest way to do this, is to just solder another 10k on top of the resistor that is already there.
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Re: New mini xoxbox in development

Post by midirobot » Tue Mar 24, 2020 7:50 am

will give a try with 5 k : )

found a lot of other mods yesterday http://rabidelephant.com/blogs/general/ ... ifications

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Re: New mini xoxbox in development

Post by guest » Tue Mar 24, 2020 8:12 am

wow, thanks for sharing that, i hadnt seen it.
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