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Zodiak
Joined: May 20, 2007 Posts: 249 Location: Gillingham, Kent UK
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Posted: Tue Apr 23, 2019 1:25 pm Post subject:
Eurorack Soundlab |
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This is my SoundLab rehoused as a Eurorack panel.
I have added a few upgrades from the soundlab plus and ultimate, most of which are mounted as various daughter boards.
Total upgrade to +/-12V
LFO: Inverted output on ramp
ARG: Trig level control, inverted output
VCO1: PWM, Triangle out, external sync in, and high frequency compensation
VCO2: Triangle out, external sync in, and high frequency compensation
VCF: Exponential tracking, including high frequency comp
VCA: Exponential tracking.
This is the 3rd incarnation of that board and has been a background project for the past 12 years, but I think that it is almost done now. Apart from the VCO tuning which is picking up noise from the supply rail
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Description: |
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Filesize: |
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267 Time(s) |
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_________________ Stephen
www.Rainsbury.Net |
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ixtern
Joined: Jun 25, 2018 Posts: 145 Location: Poland
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Posted: Wed Apr 24, 2019 12:22 am Post subject:
Re: Eurorack Soundlab |
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Zodiak wrote: | This is my SoundLab rehoused as a Eurorack panel.
I have added a few upgrades from the soundlab plus and ultimate, most of which are mounted as various daughter boards.
...
This is the 3rd incarnation of that board and has been a background project for the past 12 years, but I think that it is almost done now. Apart from the VCO tuning which is picking up noise from the supply rail |
Nice looking set.
If you don't want to pick up noise, connect tuning pots to the +- reference voltages rather (+- 9 to 10V) than to the supply rails. It is easy to get them with TL431 or dedicated ref ICs (78Lxx/79Lxx are not so stable regarding temperature changes). |
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Zodiak
Joined: May 20, 2007 Posts: 249 Location: Gillingham, Kent UK
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Posted: Wed Apr 24, 2019 7:47 am Post subject:
Re: Eurorack Soundlab |
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ixtern wrote: |
If you don't want to pick up noise, connect tuning pots to the +- reference voltages rather (+- 9 to 10V) than to the supply rails. It is easy to get them with TL431 or dedicated ref ICs (78Lxx/79Lxx are not so stable regarding temperature changes). |
Thanks I was gong to use a pair of those 78/79 100ma devices, but will look at that instead. _________________ Stephen
www.Rainsbury.Net |
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