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2006-01-23 by c10h14no2i
Ive finally got the sound generating part of my synth fairly well planned, so I was wondering what people thought were some good CV or gate/trigger processing modules. I first got into synths about 12 or so years ago, and have been using analog modeling since then. The sound gene
2006-01-23 by c10h14no2i
Hi, Ive got a bunch of cgs modules on the way, but ordered some PCB's from the musicfromouterspace website for my VCA. It states in the VCA info that it only works w/ +/-5v. I have been reading that the cgs modules sometimes use higher voltages. Do you think I am going to run int
2006-01-23 by sasami@hotkey.net.au
>One more question - my Steiner filter doesn't self-modulate, but other than >that it's working fine. It does ring a bit (can see it on a square >wave-form), but not as much as some samples I have heard on the web. I have >changed the 1k resistor just above the res pot in the dia
2006-01-23 by Gerald Stevens
Ah... yes - I see. I could have used a transformer with the same number of primary and secondary windings. I thought it needed to be stepped down for some reason related to the diodes... guess I was wronge there. It works beautifully by the way - very little leakage of the input
2006-01-23 by sasami@hotkey.net.au
>I had assumed that these were gone for good, and put one together myself >with some old germanium diodes. A question about the schematic - are the >input and output on the primary windings (meaning, the circuit steps down >the voltage, modulates, and then steps it back up? No, w
2006-01-22 by Gerald Stevens
I had assumed that these were gone for good, and put one together myself with some old germanium diodes. A question about the schematic - are the input and output on the primary windings (meaning, the circuit steps down the voltage, modulates, and then steps it back up? -gerald O
2006-01-22 by mritenburg
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2006-01-22 by sasami@hotkey.net.au
There were a couple of people waiting for me to get some more Real Rings in stock. I have a few now. Ken _______________________________________________________________________ Ken Stone sasami@... or sasami@... Modular Synth PCBs for sale http://www.blaze.net.au/~sasami/synth/ >
2006-01-20 by josh summitt
Does the volume get louder at lower frequencies. (i.e. start turning your tune knob all the way down). Just curious. I had a similar problem once. On 1/19/06, jtmcnc mccusker@... > wrote: > > I've been lurking around here for awhile - and I have just finished > building a steiner
2006-01-20 by John Loffink
Usually the suffixes refer to packaging styles. Always make sure you're getting a DIP, not a SOIC or surface mount package. In the case of TL07X series the A, B, and C refer to different Input Offset Voltage tolerances. For the purposes of these circuits those parameters usually
2006-01-20 by jtmcnc
I've been lurking around here for awhile - and I have just finished building a steiner filter in banana format (successfully!) but am having less luck with the VCO. I am getting an extremely low output from both the saw and sine, and an almost inaudible signal from the square - a
2006-01-20 by sasami@hotkey.net.au
The difference is whether the letters are a suffix or not. The in 74HC14 indicates the type of chip, not the type of package. If letters are in the middle of a part number, they are important. At the end they can refer to the package, the quality and so on, where as in the middle
2006-01-20 by John Loffink
If the part is specified as a 74HCxx, then you should get the HC part, not a 74xx or 74LSxx or whatever part. The HC is a CMOS part with lower power and noise. While other labeled parts may work, then will tend to introduce more noise coupling into your power system and back to y
2006-01-20 by Pete
Hi everybody. I finally finished and got the filter onto a panel. I wanted to know if its possible to add a CV to the Bandwidth pot? I wanted to be able to feed an EG into it. I noticed that the Bandwidth seems to act more like a freq cutoff when the internal VCO is off and every
2006-01-20 by c10h14no2i
well the reason I ask about the letters is because I used to build little B.E.A.M. robots. For those, I needed the exact letter to be correct. for example, one time I needed some 74hc14s. My local electronics store said "well, we've got the 7414.. those should work fine" I bought
2006-01-20 by sasami@hotkey.net.au
EVERYTHING has a limited shelf life, the old stuff included. I get bulk resistor lots cheap on occasion because the masking tape they use for the automatic feeders has gone off. I also have other parts where the leads have become unsolderable through oxidation. Just twist the lea
2006-01-20 by xamboldt
I was under the impression that the RoHS resistors had a limited shelf life - is that incorrect? -Chris On Jan 19, 2006, at 7:01 PM, Richard Brewster wrote: > I buy resistors from Mouser. http://www.mouser.com > > I always buy the 1% metal film, the 271- series, (271-10K-RC for >
2006-01-19 by Richard Brewster
I buy resistors from Mouser. http://www.mouser.com I always buy the 1% metal film, the 271- series, (271-10K-RC for 10K is the new number for RoHS non-leaded). These cost 9 cents each, but 2 cents each for 200. Figure it out. You can buy 50 for $4.50 or 200 for $4.00. If you do a
2006-01-19 by Pete
I have to say it looks and sounds dam nice! Very nice job. pete On 1/19/06, Rutger rutgervlek@... > wrote: > > Hello everyone, > > I got great news! I finally finished my 'Ocean' synthesizer. It's built > partly from Oakley modules, it includes a variation on Ken's Synthacon > Fi
2006-01-19 by Haven Sole
hey, great lookin board there. exactly what i have been working on for the past few years. -haven sole ----- Original Message ----- From: Rutger To: cgs_synth@yahoogroups.com Sent: Thursday, January 19, 2006 4:40 AM Subject: [cgs_synth] Home built synthesizer 'Ocean' finished Hel
2006-01-19 by sasami@hotkey.net.au
Often these letters refer to the type of packaging the chip comes in. Sometimes it makes no difference (except maybe to the price) - plastic or ceramic for example. Some times it does make a difference - DIP or surface mount for example. The datasheet should give the details, eve
2006-01-19 by Pete
If you read the data sheet it will give you more info on the lettering or numbering. The lettering may represent what the part is made of, and if its SMD or DIP. Dip is what we are looking for, or sometimes it shows as a PDIP. If you go to the bottom of the data sheet it will sho
2006-01-19 by Rutger
Hello everyone, I got great news! I finally finished my 'Ocean' synthesizer. It's built partly from Oakley modules, it includes a variation on Ken's Synthacon Filter and other modules I (re)designed (from existing schematics) myself. During the building I've kept a diary with lot
2006-01-19 by c10h14no2i
When im buying components to build my modules, does it matter which IC I buy? many of them have letters listed on the end of them that are not listed on the parts list. Say I need a tl071, do I get a tl071SM CD ACM ACP, etc.... Even simple parts like resistors and caps give me ma
2006-01-19 by c10h14no2i
Thanks, I get it! And, thanks for the patching idea! I would not have come up with that on my own for quite a while. I noticed that the "music from outerspace" website has a vca PCB for sale. I think I will try one of those. Its got a switch to choose between linear and expo. It
2006-01-19 by Matthias Herrmann
--- In cgs_synth@yahoogroups.com , "c10h14no2i" wrote: > > > What is the difference between linear and expo VCA. I understand what > linear and exponential mean, but I can't imagine how that effects the > sound. Does it adjust more slowly at first, then quickly cut off > towards
2006-01-19 by sasami@hotkey.net.au
>you know what you were saying, it was just a matter of semantics. "I know you think you understand what I said, but do you understand what I said wasn't what I meant." _______________________________________________________________________ Ken Stone sasami@... or sasami@... Modu
2006-01-19 by dustin sedlacek
you know what you were saying, it was just a matter of semantics. -- Dustin [Non-text portions of this message have been removed]
2006-01-19 by Richard Brewster
I stand corrected about the BZ. It is a pattern generator, as well as a frequency divider. However it works quite differently in that the patterns are not random or fractal based, as is the Infinite Melody. Both are very cool modules to have. -Richard Brewster dustin sedlacek wro
2006-01-19 by Romeo Fahl
Hmm... I have both, but have never tried them side by side. There are some similarities in terms of generating pseudo-random melodies/patterns/voltages, but they are different in how they go about it. I think of the BZ as a kooky analog sequencer generating its own output, wherea
2006-01-19 by dustin sedlacek
now i am confused, i thought that the BZ generated patterns by diving a clock by diffrent frequencies On 1/18/06, Richard Brewster pugix@... > wrote: > > No, these are completely different. The Infinite Melody generates a > series of control voltages, generally for use in contoll
2006-01-19 by c10h14no2i
Thanks. That makes sence. There is so much to learn w/ these! I've been using analog modeling synths for years, so I've got the general audio stuff figured out, but these modulars go so far beyond that. Now I really want to learn how to make it produce its own melodies. I was thi
2006-01-18 by Richard Brewster
No, these are completely different. The Infinite Melody generates a series of control voltages, generally for use in contolling VCO pitch. The Binary Zone is a type of frequency divider used to provide different divisions of a frequency on the input. Binary Zone is for the most p
2006-01-18 by Andy Wilson
Hi Scott, On 18 Jan 2006 at 16:50, c10h14no2i wrote: > Can someone direct me to a more general synth discussion group? I recommend you join the Synth-DIY list http://dropmix.xs4all.nl/synth-diy/ Excellent resource with very knowledgeable members. Cheers Andy --- Andy Wilson http:
2006-01-18 by c10h14no2i
Can someone direct me to a more general synth discussion group? I signed up for a couple of the yahoo groups discussions, and have been awaiting activation for a week. Ive got a few general questions. While Im waiting for my CGS kits to get here, Im trying to decide what else I n
2006-01-18 by c10h14no2i
Does anyone know if the infinite melody is similar to Blacet's 'Binary Zone'? thanks Scott
2006-01-17 by MICHAEL LEATHERLAND
hi charles-could you please email me your TLO72 circuit as i would like to include this with mine... regards mike Charles Osthelder osthelder@... > wrote: Hi Luke! The parts for the ring mod are in the archives of this list. The best transformers have a around 10K primary impedan
2006-01-16 by sasami@hotkey.net.au
Yes, a Y cable would work, or with synths, a multiple jack would work. Essentially it does the same thing. Run the VCO to a multiple, then from the multiple go to the reverb, and to the mixer. I do this sort of thing all the time on my own synth. Reverb after the VCO but before t
2006-01-16 by c10h14no2i
Sorry if this is a bit off toppic... Ive signed up on the more general modular discussion boards, but am awaiting activation. Maybe there is a cgs module that does what I need. Im thinking about getting the paia spring reverb. It outputs only the reverb and not the original audio
2006-01-16 by Charles Osthelder
Hi Luke! The parts for the ring mod are in the archives of this list. The best transformers have a around 10K primary impedance and 2K secondary. The DC resistance is about 600 ohms and 160ohms respectively. Mouser has two transformers that work quite well. The larger is part # 4
2006-01-16 by c10h14no2i
I started w/ the paia, and I think its a great choice. Its not a super high precision piece of gear, but they pack a lot of stuff in that little synth for the price. My osc's track pretty well over my entire 88 key controller. There are a couple of spots where they are off (and i
2006-01-15 by Paul Neaveill
Thanks for the imput from everyone. I looked at the PAia website and looks like I may start from there as was suggested. If any other ideas, options or inpur, please let me know. Paul __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has
2006-01-15 by sasami@hotkey.net.au
If you do this, each time you adjust span, the first C will also be adjusted, so you'll never get it quite right. You need to do it with the output of the summing op-amp at 0 volts for your "reference" ptich, then add a volt to adjust for one oct up. After that, you go up a coupl
2006-01-15 by josh summitt
I'm trying to tune the ken stone VCO and have some questions. I realize that tuning the circuit is tedious but i am using a guitar tuner to try and tune it. It stays pretty much in tune for about one whole octave and then starts ti trail off. Is this about average? Also used 2% r
2006-01-15 by Jason Proctor
personally i want to mount pots once and have them work for a long long time, so i always bite the bullet and use spectrols or bournes. people over on the oakley list are already seeing their omegs get scratchy or flaky, and mine get stiff if they are not given a regular workout.
2006-01-15 by Pete
I got these. They look and feel ok. Piher Potentiometers mouser part# 531-PC16DC-100K $2.86 each On 1/14/06, sasami@... sasami@... > wrote: > > Many of us just use plain old alpha 16mm open frame pots. They are cheap > enough and reliable enough for home use, and not too difficul
2006-01-15 by sasami@hotkey.net.au
Many of us just use plain old alpha 16mm open frame pots. They are cheap enough and reliable enough for home use, and not too difficult or expensive to replace in the event you need to. Ken >What are some decent potentiometers? I've noticed they range from >about $1.00 to $10.00
2006-01-15 by c10h14no2i
What are some decent potentiometers? I've noticed they range from about $1.00 to $10.00 per. I don't want to get anything super cheap that I would regret later, but dont want to spend a small fortune on pots. thanks
2006-01-15 by John Loffink
Recommended purchase or build order for modular synthesizer (generic): Power Supply VCF (you can use this to process other instruments) LFO (add modulator for VCF) Envelope Generator (trigger from LFO, use for more VCF modulation) VCA (use EG to modulate for audio gating effects)
2006-01-15 by Gerald Stevens
Have you thought about building a PAIA 9700? Great, cheap way to start, and a good introduction to DIY synths. Once you have it up and running, you'll be able to figure out what you need next - it will become quite obvious. Ken's modules are fantastic, but require a lot of work t