Search found 56 matches

Thanks for the reply at first.
I know what the schematic says, but since it should be the same circuit as used in the Minibrute, I thought their must be a definte value for this.

Hi,
I recently found a mismatch between the BOM and the schematics of the Steiner Parker Filter.
The BOM gives me a value of 8.2k for R18.
The schematic shows a value of 3.9k for R18.
Which one i ...

That´s all I want to know. Very Happy

Thank you!

I know.
But if I set te pots that way, that, for example, 1V (or 2V/3V/4V) goes in,
does it make a 'C'?

Thank you too.
Yes, the expo converter is included.
To make it more clear:
I have an Octave Switch and Pitch Pot with a
range of 2 octaves (-1V <-> +1V).
What I meant is:
If I feed the (c ...

Thank you again!
If your suggestions are right, then you helped me a lot and saved much of my time.
Without you, I would have gone on a big bug hunt, but maybe there would have no bug been in the wo ...

Thank you for your fast reply.
So everything is fine and the distorted waveform comes from the AC coupling?
Or, if the waveform is distorted that (heavy) way, it has to be something different?

Hi,
I built a synth containing three VCO from the
MFOS Sound Lab MiniSynth Mark 2.
The synth is hardwired but build modular inside, so that each module has its own PCB.
I´m still at the beginning ...

Thank you!
Level Control would also cool!

This question is pretty similar to my last, so I can guess the answer(s), but anyway, here it is:

I am building a synth which has a switch for each waveform of an oscillator, so you can use any of ...

Thank you!
I was thinking a bit in a wrong direction.
You are right, a crossfade after both filters would make more sense.
Thank you again!

Hi,
I am building a synth with two filters.
Here is my question:

Can I just add the two outputs of each filter or do I have to build a mixer, even if I don´t want to adjust the volume of each f ...

Yeah, of course 0.001V. that is what I meant!
These good DVM seems to be very "good" when it comes to their prices either, sadly. Sad

Any new stuff inside which I haven´t read here or on the mfos-site?

Thank you!
Tried it in LTSpice just before I read your answer
and with that I got to same result. Smile

But with what the h*** I should measure 5V +/- 0.001mV? Sad

Hi there!
Can I build the CV Standard with 200k for T22 instead of 220K anf
with 50k for T21 instead of 47k without getting trouble?
Thank you!

Thank you!
Will give it try.

I´ve built 3 ADSR envelopes, which work great after changing D2 and D3 to a BAT41.
Now I´m trying to get the envelope closer to Ground when gate is off.
I was trying it first in LTSpice by changin ...

Yeah, love it,
but makes me feel like a retarded, too. Wink

Hi,
I´ve built an oscillator (and another before as master) from the Mini Synth Plus with Sync.
It is working fine and when testing it the first time, the sync works fine, too.
I´ve built a seco ...

Same Problem here.
Working envelope but not the LED.
Could not find that thread with the search function.
Do I just have to change the direction of both, the LED and the diode?
Thank you.

It´s working!
Thank you!

I´ve built the 2SC1583 version with yet unmatched 2N3904.
I just figured out that I used 82K instead of 82R for R18!
I will give it a try a with a 510R and 100R in parallel since a lack of a 82R re ...

Hi,
I have the same problem as mentioned by Aottens before.
Very low output with highpass and bandpass and very very ineffective cutoff control.
Lowpass gives a loud signal but seems to be complete ...

Thank you Eberhard!
And of course for the hint with the Soundlab Mini Plus, too!

Author	Message
Topic: Steiner Parker Filter - BOM and schematic don´t match
El Mop Replies: 3 Views: 5035	Posted: Tue Jun 30, 2015 11:57 am Subject: Steiner Parker Filter - BOM and schematic don´t match Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 3 Views: 5035	Thanks for the reply at first. I know what the schematic says, but since it should be the same circuit as used in the Minibrute, I thought their must be a definte value for this.
Topic: Steiner Parker Filter - BOM and schematic don´t match
El Mop Replies: 3 Views: 5035	Posted: Tue Jun 30, 2015 6:47 am Subject: Steiner Parker Filter - BOM and schematic don´t match Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 3 Views: 5035	Hi, I recently found a mismatch between the BOM and the schematics of the Steiner Parker Filter. The BOM gives me a value of 8.2k for R18. The schematic shows a value of 3.9k for R18. Which one i ...
Topic: VCO (MFOS SLMS Mark II)
El Mop Replies: 11 Views: 5155	Posted: Tue Nov 26, 2013 2:56 pm Subject: VCO (MFOS SLMS Mark II) Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 11 Views: 5155	That´s all I want to know. Thank you!
Topic: VCO (MFOS SLMS Mark II)
El Mop Replies: 11 Views: 5155	Posted: Tue Nov 26, 2013 1:12 am Subject: VCO (MFOS SLMS Mark II) Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 11 Views: 5155	I know. But if I set te pots that way, that, for example, 1V (or 2V/3V/4V) goes in, does it make a 'C'?
Topic: VCO (MFOS SLMS Mark II)
El Mop Replies: 11 Views: 5155	Posted: Mon Nov 25, 2013 4:35 pm Subject: VCO (MFOS SLMS Mark II) Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 11 Views: 5155	Thank you too. Yes, the expo converter is included. To make it more clear: I have an Octave Switch and Pitch Pot with a range of 2 octaves (-1V <-> +1V). What I meant is: If I feed the (c ...
Topic: VCO (MFOS SLMS Mark II)
El Mop Replies: 11 Views: 5155	Posted: Mon Nov 25, 2013 10:00 am Subject: VCO (MFOS SLMS Mark II) Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 11 Views: 5155	Thank you again! If your suggestions are right, then you helped me a lot and saved much of my time. Without you, I would have gone on a big bug hunt, but maybe there would have no bug been in the wo ...
Topic: VCO (MFOS SLMS Mark II)
El Mop Replies: 11 Views: 5155	Posted: Mon Nov 25, 2013 5:41 am Subject: VCO (MFOS SLMS Mark II) Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 11 Views: 5155	Thank you for your fast reply. So everything is fine and the distorted waveform comes from the AC coupling? Or, if the waveform is distorted that (heavy) way, it has to be something different?
Topic: VCO (MFOS SLMS Mark II)
El Mop Replies: 11 Views: 5155	Posted: Sun Nov 24, 2013 1:56 pm Subject: VCO (MFOS SLMS Mark II) Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 11 Views: 5155	Hi, I built a synth containing three VCO from the MFOS Sound Lab MiniSynth Mark 2. The synth is hardwired but build modular inside, so that each module has its own PCB. I´m still at the beginning ...
Topic: Mixer needed for...
El Mop Replies: 2 Views: 2353	Posted: Sat Jul 06, 2013 6:26 am Subject: Mixer needed for... Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 2 Views: 2353	Thank you! Level Control would also cool!
Topic: Mixer needed for...
El Mop Replies: 2 Views: 2353	Posted: Tue Jul 02, 2013 1:18 pm Subject: Mixer needed for... Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 2 Views: 2353	This question is pretty similar to my last, so I can guess the answer(s), but anyway, here it is: I am building a synth which has a switch for each waveform of an oscillator, so you can use any of ...
Topic: Mixer needed for 2 filters?
El Mop Replies: 2 Views: 2382	Posted: Sat Jun 15, 2013 3:06 am Subject: Mixer needed for 2 filters? Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 2 Views: 2382	Thank you! I was thinking a bit in a wrong direction. You are right, a crossfade after both filters would make more sense. Thank you again!
Topic: Mixer needed for 2 filters?
El Mop Replies: 2 Views: 2382	Posted: Sun Jun 09, 2013 12:16 pm Subject: Mixer needed for 2 filters? Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 2 Views: 2382	Hi, I am building a synth with two filters. Here is my question: Can I just add the two outputs of each filter or do I have to build a mixer, even if I don´t want to adjust the volume of each f ...
Topic: CV Standard Trimmer
El Mop Replies: 5 Views: 4173	Posted: Mon Jan 21, 2013 11:07 am Subject: CV Standard Trimmer Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 5 Views: 4173	Yeah, of course 0.001V. that is what I meant! These good DVM seems to be very "good" when it comes to their prices either, sadly.
Topic: Ray Wilson announces Synth-DIY book!
El Mop Replies: 7 Views: 4027	Posted: Mon Jan 21, 2013 11:04 am Subject: Ray Wilson announces Synth-DIY book! Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 7 Views: 4027	Any new stuff inside which I haven´t read here or on the mfos-site?
Topic: CV Standard Trimmer
El Mop Replies: 5 Views: 4173	Posted: Sun Jan 13, 2013 3:57 pm Subject: CV Standard Trimmer Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 5 Views: 4173	Thank you! Tried it in LTSpice just before I read your answer and with that I got to same result. But with what the h*** I should measure 5V +/- 0.001mV?
Topic: CV Standard Trimmer
El Mop Replies: 5 Views: 4173	Posted: Wed Jan 09, 2013 11:40 am Subject: CV Standard Trimmer Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 5 Views: 4173	Hi there! Can I build the CV Standard with 200k for T22 instead of 220K anf with 50k for T21 instead of 47k without getting trouble? Thank you!
Topic: Getting ADSR closer to Ground when gate is off
El Mop Replies: 2 Views: 2470	Posted: Sun Dec 30, 2012 7:41 am Subject: Getting ADSR closer to Ground when gate is off Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 2 Views: 2470	Thank you! Will give it try.
Topic: Getting ADSR closer to Ground when gate is off
El Mop Replies: 2 Views: 2470	Posted: Sun Dec 30, 2012 4:29 am Subject: Getting ADSR closer to Ground when gate is off Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 2 Views: 2470	I´ve built 3 ADSR envelopes, which work great after changing D2 and D3 to a BAT41. Now I´m trying to get the envelope closer to Ground when gate is off. I was trying it first in LTSpice by changin ...
Topic: 24db lowpass filter
El Mop Replies: 3 Views: 3001	Posted: Sun Dec 30, 2012 4:20 am Subject: 24db lowpass filter Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 3 Views: 3001	Yeah, love it, but makes me feel like a retarded, too.
Topic: Mini Synth Plus Oscillator SYNC
El Mop Replies: 0 Views: 1210	Posted: Mon Dec 17, 2012 9:42 am Subject: Mini Synth Plus Oscillator SYNC Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 0 Views: 1210	Hi, I´ve built an oscillator (and another before as master) from the Mini Synth Plus with Sync. It is working fine and when testing it the first time, the sync works fine, too. I´ve built a seco ...
Topic: A NEW (IMPROVED) VERSION OF THE YUSYNTH ADSR
El Mop Replies: 53 Views: 62666	Posted: Sun Dec 09, 2012 11:14 am Subject: A NEW (IMPROVED) VERSION OF THE YUSYNTH ADSR Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 53 Views: 62666	Same Problem here. Working envelope but not the LED. Could not find that thread with the search function. Do I just have to change the direction of both, the LED and the diode? Thank you.
Topic: Steiner VCF
El Mop Replies: 20 Views: 18846	Posted: Fri Dec 07, 2012 3:59 pm Subject: Steiner VCF Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 20 Views: 18846	It´s working! Thank you!
Topic: Steiner VCF
El Mop Replies: 20 Views: 18846	Posted: Fri Dec 07, 2012 3:21 pm Subject: Steiner VCF Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 20 Views: 18846	I´ve built the 2SC1583 version with yet unmatched 2N3904. I just figured out that I used 82K instead of 82R for R18! I will give it a try a with a 510R and 100R in parallel since a lack of a 82R re ...
Topic: Steiner VCF
El Mop Replies: 20 Views: 18846	Posted: Fri Dec 07, 2012 2:20 pm Subject: Steiner VCF Forum: DIY Hardware and Software » YuSynth
El Mop Replies: 20 Views: 18846	Hi, I have the same problem as mentioned by Aottens before. Very low output with highpass and bandpass and very very ineffective cutoff control. Lowpass gives a loud signal but seems to be complete ...
Topic: LFO SLMS Question
El Mop Replies: 3 Views: 1704	Posted: Tue Dec 04, 2012 12:04 pm Subject: LFO SLMS Question Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
El Mop Replies: 3 Views: 1704	Thank you Eberhard! And of course for the hint with the Soundlab Mini Plus, too!