| Author |
Message |
v-un-v
Janitor
Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
Audio files: 11
G2 patch files: 1
|
 Posted: Wed Feb 15, 2006 4:46 am Post subject:
|
  |
|
| elektro80 wrote: | | A preamp isn´t using much juice anyway. |
Isn't all that glowing done by the heater element in the tube- and has little to do with what's actually going on?
_________________
ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. |
|
|
Back to top
|
|
 |
elektro80
Site Admin
Joined: Mar 25, 2003
Posts: 21959
Location: Norway
Audio files: 14
|
| Posted: Wed Feb 15, 2006 4:56 am Post subject:
|
|
|
Didn´t you see that pix I posted somewhere of what is REALLY making that glow behind those cute tubes?
Hmm, I think I possibly didn´t post it here. I think I emailed that pix to Carlo, Howard and Kassen.
_________________
A Charity Pantomime in aid of Paranoid Schizophrenics descended into chaos yesterday when someone shouted, "He's behind you!"
MySpace
SoundCloud
Flickr |
|
|
Back to top
|
|
|
elektro80
Site Admin
Joined: Mar 25, 2003
Posts: 21959
Location: Norway
Audio files: 14
|
| Posted: Wed Feb 15, 2006 7:46 am Post subject:
|
|
|
Here you go:
_________________
A Charity Pantomime in aid of Paranoid Schizophrenics descended into chaos yesterday when someone shouted, "He's behind you!"
MySpace
SoundCloud
Flickr |
|
|
Back to top
|
|
|
zipzap
Joined: Nov 22, 2005
Posts: 559
Location: germany
Audio files: 24
|
| Posted: Wed Feb 15, 2006 9:37 am Post subject:
|
|
|
| Thats the way the world is... |
|
|
Back to top
|
|
|
3phase
Joined: Jul 27, 2004
Posts: 1189
Location: Berlin
Audio files: 13
G2 patch files: 141
|
| Posted: Wed Feb 15, 2006 12:22 pm Post subject:
|
|
|
| zipzap wrote: | servus 3phase Would be great to if you let us know when something great happens in your experiments. Can those tubes run at eg 15volt or does low voltage with tubes mean just say 60V?
I´ve got an Hybrid/Tube preamp running on 18V AC. -got one of those 12ax whatever theyre called. Its normal size. So it seems to work somehow. I could imagine that lower voltage tresults in more distortion and dirt. Great. |
I am still in search for the wriht schematics..
My friend developed a K2 generator for me but i wanted to combine that with an allpassfilter..
Experiments with the nord modular showed me that this is a promissing combination and with these russian batterie tubes...
They have actually quite incredible specs... very low power consumption.
The russians are much ahead in the development of battery tubes...
In the west development stoped in the 60´s..In russia it actually is still going on..they equip theire military aircrafts with valve electronic to make them emp resistant |
|
|
Back to top
|
|
|
Scott Stites
Janitor
Joined: Dec 23, 2005
Posts: 4127
Location: Mount Hope, KS USA
Audio files: 96
|
|
|
Back to top
|
|
|
3phase
Joined: Jul 27, 2004
Posts: 1189
Location: Berlin
Audio files: 13
G2 patch files: 141
|
| Posted: Wed Feb 15, 2006 3:55 pm Post subject:
|
|
|
no...i was ill and not in the mood to go out...
The little brown keyboard he is playing looks interesting..
I bet its based on valves and has an old fullrangespeaker inside...
Anybody know what that is? |
|
|
Back to top
|
|
|
seraph
Editor
Joined: Jun 21, 2003
Posts: 12398
Location: Firenze, Italy
Audio files: 33
G2 patch files: 2
|
| Posted: Wed Feb 15, 2006 4:58 pm Post subject:
|
|
|
| elektro80 wrote: | | I think I emailed that pix to Carlo, Howard and Kassen. |
...and I forwarded it to everyone that could appreciate this technology breakthrough 
_________________
homepage - blog - forum - youtube
| Quote: | | Don't die with your music still in you - Wayne Dyer |
|
|
|
Back to top
|
|
|
Scott Stites
Janitor
Joined: Dec 23, 2005
Posts: 4127
Location: Mount Hope, KS USA
Audio files: 96
|
| Posted: Thu Feb 16, 2006 3:20 pm Post subject:
|
|
|
| Quote: | The little brown keyboard he is playing looks interesting..
I bet its based on valves and has an old fullrangespeaker inside... |
Hazarding a guess - seeing what looks like a slide control on the front, an Ondes Martenot or cousin thereof?
Swinging back to Buchla - here's a link for a rare response to a review of the 200e from the man himself:
http://www.soundonsound.com/sos/mar06/articles/crosstalk.htm
If I had 20 grand, it would be converted into the shape of a Buchla 200e very, very quickly.....
Cheerio,
Scott |
|
|
Back to top
|
|
|
v-un-v
Janitor
Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
Audio files: 11
G2 patch files: 1
|
| Posted: Fri Feb 17, 2006 8:51 am Post subject:
|
|
|
Hmm that Gordon Reid man again?- sorry Gordon (if you are a member/ lurker here), but that's a bit rich coming from someone who spends '$xxxxx' on a Yamaha GX1 AND still have change to have it delivered back to England (from Australia) to put it in your studio- alongside the CS80!
http://www.soundonsound.com/sos/feb00/articles/yamahagx1.htm
http://www.soundonsound.com/sos/mar00/articles/yamahagx1.htm
| Scott Stites wrote: |
If I had 20 grand, it would be converted into the shape of a Buchla 200e very, very quickly.....
|
Why do you think I've gone to do a BSc in Product Design Engineering- with excellent salary opportunities??? 
_________________
ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN. |
|
|
Back to top
|
|
|
Scott Stites
Janitor
Joined: Dec 23, 2005
Posts: 4127
Location: Mount Hope, KS USA
Audio files: 96
|
| Posted: Fri Feb 17, 2006 9:00 am Post subject:
|
|
|
!! I never made the connection that he was the guy that got the GX-1!
I daresay one would not have to knock a wall in to install the 200e 
| Quote: | | Why do you think I've gone to do a BSc in Product Design Engineering- with excellent salary opportunities??? |
|
|
|
Back to top
|
|
|
bugbrand
Joined: Nov 27, 2005
Posts: 846
Location: Bristol, UK
Audio files: 1
G2 patch files: 1
|
| Posted: Fri Feb 24, 2006 3:37 am Post subject:
|
|
|
Hey Scott - I know I should probably try to figure it out myself, but I was wondering whether you thought the VTL5C1 may still be a useful Vactrol despite it not being one mentioned so far in discussions (I just found a bag of them on EBay) - - from the datasheet it looked as though it had a quite similar spec to the VTL5C3 - the switch-on and turn-off speeds are identical, but the dynamic range & OffResistance are much higher.. Guess it may be a suck-it & see situation, but if you've had any experience with these I'd love to know.... CHEERS!
_________________
http://www.bugbrand.co.uk
http://www.bugbrand.blogspot.com |
|
|
Back to top
|
|
|
Scott Stites
Janitor
Joined: Dec 23, 2005
Posts: 4127
Location: Mount Hope, KS USA
Audio files: 96
|
| Posted: Fri Feb 24, 2006 10:40 am Post subject:
|
|
|
Never had the opportunity to try the VTL5C1.
Comparing the datasheets, here are a few notes
VTL5C3 Turn on at 10 mA is 1M to ~2.5K in 10 mS
VTL5C1 Turn on at 10 mA is >100K to ~1.5K in 13 ms
So the attack times and resistance ranges aren't all that different.
Turn off, the VTL5C3 returns to 100K in a little over 20 ms.
The VTL5C1 returns to 100K in about 22 ms.
Looking at it that way, the decays are very similar up to 100K.
The difference in response times beyond 100K is hard to tell - the VTL5C1 doesn't show the response up to 1M. This is a fairly important area. The lines on the chart show that the 5C1 may be faster on up past 100K than the 5C3.
Another thing to be careful about is that the 5C1 can go much lower in resistance than the 5C3 - turn on at 40 mA can take it to 150R where turn on at 40 mA will put the 5C3 at 1K. I rarely drive Vactrols that hard anyway (I like to keep the current through the LED's low - I'd hate to 'pop' one of these babies, or shorten its life, like I've seen actually happen with a product my company produces).
It looks like max resistance of the 5C1 can go much higher as well (50M as opposed to 10M after 10 seconds with the 5C3).
All in all, if I were you, I'd sure go for it. Are you getting a decent price?
Cheerio,
Scott |
|
|
Back to top
|
|
|
bugbrand
Joined: Nov 27, 2005
Posts: 846
Location: Bristol, UK
Audio files: 1
G2 patch files: 1
|
| Posted: Sat Feb 25, 2006 4:10 am Post subject:
|
|
|
Cheers so much Scott - yeah, I will try them for sure! (..given enough time to make a phaser etc... cripes so many things to build)
I've heard of them being used for channel switching in amps??? Suppose that's just like using a more normal optoisolator.?.
I got them from Italy actually - off Ebay - 10 for under £2 each - the guy actually has another bag on offer right now too::
Ebay Link
_________________
http://www.bugbrand.co.uk
http://www.bugbrand.blogspot.com |
|
|
Back to top
|
|
|
v-un-v
Janitor
Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
Audio files: 11
G2 patch files: 1
|
| Posted: Sat Feb 25, 2006 4:30 am Post subject:
|
|
|
| bugbrand wrote: | Cheers so much Scott - yeah, I will try them for sure! (..given enough time to make a phaser etc... cripes so many things to build)
|
I think if everybody comes up with at least one thing and no more- I could open a new section in the DIY forum that is dedicated to these projects. (just like there is in the G2 section) For e.g. My SN76477 project, your phaser (Lets hope it's a Shulte clone ), Mosc's noise box idea - based on an original G2 patch idea- sorry can't remember the other suggestions!! 
hope you all get the gist! |
|
|
Back to top
|
|
|
Scott Stites
Janitor
Joined: Dec 23, 2005
Posts: 4127
Location: Mount Hope, KS USA
Audio files: 96
|
| Posted: Sat Feb 25, 2006 9:17 am Post subject:
|
|
|
| Quote: | | Cheers so much Scott - yeah, I will try them for sure! (..given enough time to make a phaser etc... cripes so many things to build) |
So many projects, so little time
For the phaser, here's what you might do - get a fairly large breadboard and put a long phase shift chain on it. That part is amazingly simple, because it's just the same stage over and over and over.
At the end of every chain, put in a wire you can jump off to go to the regen and output mixer. Then experiment with tapping off of various chains for the output and the regen. Make sure you can invert the regen, and put in that LP filter from the Schulte Compact A on the inverted regen - makes a huge difference at least for the Schulte Compact A config.
You'll be *astounded* by how many variations of the phase shift effect you can come up with by inverting the regen, not inverting the regen, tapping off of different stages for regen and output, tapping off of even stages or odd stages, etc.
The Moog Stage Phaser took this approach. As an aside, I think earlier in this thread or some other, I accused the Stage Phaser as being an LDR based phaser - Bzzzt! Wrong. It uses the now deceased CA3094 OTA IC.
A large number of stages starts to approach a more flangery sound (though the peaks/notches won't be behaving as they would in a flanger, the sheer number of them gives the sensation). I got a feeling you're going to love it and eventually there'll be a deep phaser in the Bugbrand modular....
| Quote: | | I've heard of them being used for channel switching in amps??? Suppose that's just like using a more normal optoisolator.?. |
There are many uses for them. I've heard they are used for switching too, seem to have read threads on the stompbox forum for it.
Another use I haven't mentioned is for cross-fading and panning - Mark Verbos has adaptations of a Buchla circuit for those functions. I designed a Super Panner/Fader module for Jeff Pontius based on those. They work very well for that in this circuit (the panner works as an 'even power' panner more closely than just using two VCA's).
Thanks for the link! Looks like a fairly decent price.
| Quote: | I think if everybody comes up with at least one thing and no more- I could open a new section in the DIY forum that is dedicated to these projects. (just like there is in the G2 section) For e.g. My SN76477 project, your phaser (Lets hope it's a Shulte clone ), Mosc's noise box idea - based on an original G2 patch idea- sorry can't remember the other suggestions!!
hope you all get the gist! |
Actually, I've thought of that, too, Tom. Would it have to be just one project? There are so many irons in the fire.....
Once again, thank you very much for exposing me to the Compact A. I emulated the structure of the Compact A on the breadboard (with the LP filter in place). I'm certain it doesn't emulate the compact A, but it still results in a very unique sound - that LP filter made a *huge* difference. I've started a page on my phase shifter project. It has a sample that contains a brief bit of the Compact A arrangement in it, then moves on to 16 stage examples. When I recorded these samples, I was experimenting with a fairly small cap value. I think I'm going to move it back up again to increase the bass range of the phaser. Have a listen if you'd like, the page is here:
http://mypeoplepc.com/members/scottnoanh/birthofasynth/id18.html
Cheers,
Scott |
|
|
Back to top
|
|
|
Scott Stites
Janitor
Joined: Dec 23, 2005
Posts: 4127
Location: Mount Hope, KS USA
Audio files: 96
|
|
|
Back to top
|
|
|
|
Forum index » DIY Hardware and Software
FAQ
Calendar
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Chat Room
