| If I'd make a string chorus PCB, what kind of multi-BBD circuit would you prefer? |
| Solina style (also: Crumar Performer, Böhm Phasing Rotor, and others) |
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62% |
[ 28 ] |
| ARP Omni style |
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13% |
[ 6 ] |
| Elka Synthex 4 BBD circuit |
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11% |
[ 5 ] |
| other (please name in thread) |
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6% |
[ 3 ] |
| I would want neither - it's old fashioned and overused, and if I need it, there are digital FX boxes |
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6% |
[ 3 ] |
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| Total Votes : 45 |
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Don Solaris
Joined: Oct 23, 2007
Posts: 14
Location: Jupiter8
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 Posted: Sun Nov 04, 2007 12:20 am Post subject:
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| Dave Kendall wrote: | Hi guys.
Don where are you? (apart from in the solar system  ) |
I'm in europe too. I found two new "possible" sources. I contacted them and we will see. So i wont give up yet.
Cheers!
 |
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TonnieWiegman
Joined: Jun 18, 2007
Posts: 6
Location: Kilder, the Netherlands
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| Posted: Sun Nov 04, 2007 1:16 pm Post subject:
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Hi,
I have 28 TDA1022 devices and I plan to build two of the JH Solina boards. So I can help a few people with these devices.
But the problem is that I do not know the status of the devices, they came from collegue test engineer at Philips (in Nijmegen) and they have been used in all kind of tests.
So I like to test them first before sending to somebody else.
Please let me know if you are interested and have the patience to wait till I have completed the JH Solina board.
Tonnie |
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Senso
Joined: Aug 06, 2007
Posts: 7
Location: Amsterdam
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| Posted: Tue Nov 06, 2007 4:12 pm Post subject:
TDA1022 |
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TDA1022 will be back in stock at vintageplanet.nl somewhere between November 14 and 20.  |
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germaniac
Joined: Aug 04, 2006
Posts: 200
Location: California
Audio files: 7
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| Posted: Wed Nov 07, 2007 3:19 pm Post subject:
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Anybody know what has happened with Joe Grisso and his TDA1022 group-buy project? I emailed him 2 days ago but got no reply so far. . . .
Regards,
Joe |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Wed Nov 07, 2007 4:17 pm Post subject:
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Update
I just placed my order at the PCB house.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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xpmtl
Joined: Aug 10, 2007
Posts: 162
Location: Brussels, Belgium
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b-funk
Joined: Jul 17, 2007
Posts: 193
Location: Berlin
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| Posted: Wed Nov 07, 2007 5:23 pm Post subject:
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 ,  ,  ,
and not to forget:
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mono-poly
Joined: Jul 07, 2004
Posts: 937
Location: Rotterdam, Netherlands
Audio files: 2
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| Posted: Wed Nov 07, 2007 7:01 pm Post subject:
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| Joepie de poepie! |
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The Alison Project
Joined: Jul 21, 2006
Posts: 187
Location: Canada
Audio files: 2
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Wed Nov 07, 2007 11:22 pm Post subject:
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| The Alison Project wrote: | Can't wait.
Jurgen will we see the bypass part of the schematic anytime soon?
Chris |
You'll see the whole schemo, as soon as I find the time to draw it.
The bypass part?! A switch to select between input and output?!
Well ... normally open contact to board output, normally closed contact to input jack, moving contact to output jack ...
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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Luka
Joined: Jun 29, 2007
Posts: 1003
Location: Melb.
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| Posted: Thu Nov 08, 2007 12:10 am Post subject:
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Mr haible are you going to invoice us once they are through or were we mean to pay?
sorry if you have mentioned this 100 times already, I have been so caught up in my exams i have fogotten what is going on with this group buy. I registerred for the pcb and sent you that form you listed here and on SDIY.
_________________
problemchild
melbourne australia
http://cycleofproblems.blogspot.com/
http://www.last.fm/user/prblmchild |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Thu Nov 08, 2007 12:41 pm Post subject:
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| Luka wrote: | Mr haible are you going to invoice us once they are through or were we mean to pay?
sorry if you have mentioned this 100 times already, I have been so caught up in my exams i have fogotten what is going on with this group buy. I registerred for the pcb and sent you that form you listed here and on SDIY. |
Don't send any money before I send you an invoice, please.
My policy is to not taking money weeks in advance; I'll wait until I get the manufactured PCBs, then I'll build another prototype from that batch to be sure everything is ok, and then I'll send invoices.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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kokoon
Joined: Jan 09, 2006
Posts: 158
Location: slovenia
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| Posted: Thu Nov 08, 2007 2:47 pm Post subject:
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juergen, a question, if i may.
if i understand correctly, there is no intended control of the modulators. the fast and slow modulators' speed is only meant to be set once (trimpots). i haven't found it written anywhere, but changing the modulator 2 (the one that's phase shifted with a LPF) speed would probably result in inaccurate (not exactly 120deg) position (and amplitude) of the second modulator, which would also affect third modulator's both position and amplitude... so if i understand correctly it's really best to set the modulators' frequencies and leave them alone after that. right?
but modulation depths... since the third modulator is derived from the first two, would it be possible to simply attenuate the first two with a dual pot voltage divider? that way 2 additional pots (one for slow and one for fast) could make it possible to configure the effect as just "vibrato", just "chorus", and - what i'd really love - it would help make the stereo separate outputs sound more tame. i imagine it's the fast modulation that makes the "ensemble" effect fall apart when panned hard left/right...
any of that worth a thought?
even if not, i'm so happy the unit has separate outputs! i can't wait to hear this baby live and alive! huuuge thanks!!! |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Thu Nov 08, 2007 3:07 pm Post subject:
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| kokoon wrote: | juergen, a question, if i may.
if i understand correctly, there is no intended control of the modulators. the fast and slow modulators' speed is only meant to be set once (trimpots). i haven't found it written anywhere, but changing the modulator 2 (the one that's phase shifted with a LPF) speed would probably result in inaccurate (not exactly 120deg) position (and amplitude) of the second modulator, which would also affect third modulator's both position and amplitude... so if i understand correctly it's really best to set the modulators' frequencies and leave them alone after that. right?
but modulation depths... since the third modulator is derived from the first two, would it be possible to simply attenuate the first two with a dual pot voltage divider? that way 2 additional pots (one for slow and one for fast) could make it possible to configure the effect as just "vibrato", just "chorus", and - what i'd really love - it would help make the stereo separate outputs sound more tame. i imagine it's the fast modulation that makes the "ensemble" effect fall apart when panned hard left/right...
any of that worth a thought?
even if not, i'm so happy the unit has separate outputs! i can't wait to hear this baby live and alive! huuuge thanks!!! |
Oh yes, you can completely shut off either oscillator, or attenuate it. This will become clearer as soon as I've posted schemos.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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kokoon
Joined: Jan 09, 2006
Posts: 158
Location: slovenia
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| Posted: Thu Nov 08, 2007 3:13 pm Post subject:
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ah, so you only need to attenuate the oscillator and the second modulator will be accordingly attenuated as well? i mean... it sounds reasonable, since it's only a LPF but i wasn't sure what happens then with phase displacement.
so it's already planned!
AWE - SOME  |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Thu Nov 08, 2007 3:21 pm Post subject:
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| kokoon wrote: | ah, so you only need to attenuate the oscillator and the second modulator will be accordingly attenuated as well? i mean... it sounds reasonable, since it's only a LPF but i wasn't sure what happens then with phase displacement.
so it's already planned!
AWE - SOME |
Both oscillators are basically just very simple single-opamp square / triange oscillators. Thene these are filtered to approximate sine waves (1st phase), filtered again and boosted at the same time to get the required phase shift and unity gain at one specific frequeny (2nd phase), and then the 3rd phase is derived by summing up the 1st and 2nd.
This doesn't allow for much deviation from the intended frequency, but it allows attenuation the oscillator easily, with effect of all phases.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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kokoon
Joined: Jan 09, 2006
Posts: 158
Location: slovenia
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| Posted: Thu Nov 08, 2007 3:28 pm Post subject:
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yeah that's my typo up there, i wrote "...but changing the modulator 2..." instead of "...but changing the first modulator..." 
i'm so happy you guys are so patient with us noobs, explaining things over and over... i've learnt so much in this year i've been frequenting this forum! |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Fri Nov 09, 2007 12:00 pm Post subject:
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Schematics are online now
http://www.jhaible.heim.at/triple_chorus/triple_chorus.html
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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kokoon
Joined: Jan 09, 2006
Posts: 158
Location: slovenia
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| Posted: Sat Nov 10, 2007 1:02 am Post subject:
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excellent!
now for independingly attenuating the slow and fast modulators. if i'm reading the schematics correctly, U7A6 and U7B are the oscillators and U7A, U7B are the waveshaping LPFs. So... would PERHAPS replacing R202 and R226 with pots (voltage dividers?) do what i want?
but i'm probably way off |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sat Nov 10, 2007 2:15 am Post subject:
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| kokoon wrote: | So... would PERHAPS replacing R202 and R226 with pots (voltage dividers?) do what i want?
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No, that won't work.
For the fast Modulation, you can connect a pot in series with R199.
This won't let you adjust the level down to zero, though.
220k would be a good value for more than 2:1 range.
Likewise, try connecting a 1Meg pot in series with R268 for the slow Modulation.
There are other ways to to it, including attenuation down to zero level, by shunting, but the modulation signals are not referenced to GND, so you need a huge electrolytic cap in series with a pot that shunts to GND. And mind the polarity: GND is the most *positive* point in the circuit.
If you want to shut off a modulator completely:
Fast: Connect a electrolytic cap from the connection point of R199 and R200 to GND. *Positive* pin of electrolytic goes to GND !!
The bigger the capacitance, th ebettr tha attenuation. Start with 100uF / 25V cap.
Slow: Connect an electrolytic in parallel to C84. Again, positive pin goes to GND side! Start with 100uF / 25V.
Foe variable attenuation, connect an audio taper pot in series with these electrolytics, each. Experiment with pot value. 1Meg (log) seems a good start for Fast, 4.7Meg (log) semms a good start for Slow.
You'e using the wiper and the ccw end of the pot. (cw end open or connected to wiper).
JH.
ETA: Resistor number corrected
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f)
Last edited by jhaible on Sat Nov 10, 2007 12:31 pm; edited 1 time in total |
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kokoon
Joined: Jan 09, 2006
Posts: 158
Location: slovenia
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| Posted: Sat Nov 10, 2007 12:22 pm Post subject:
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| Quote: | | the connection point of R199 and R220 to GND |
do you mean R200? i can't find the R220... |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sat Nov 10, 2007 12:31 pm Post subject:
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| kokoon wrote: | | Quote: | | the connection point of R199 and R220 to GND |
do you mean R200? |
Right.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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otcx
Joined: Jan 14, 2006
Posts: 71
Location: Finland
Audio files: 4
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| Posted: Sun Nov 11, 2007 4:26 am Post subject:
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I Want board too if there is any left.
How can i order one? |
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austrohungaro
Joined: Dec 23, 2006
Posts: 42
Location: Barcelona (Spain)
Audio files: 1
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| Posted: Sun Nov 11, 2007 5:26 am Post subject:
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| otcx wrote: | I Want board too if there is any left.
How can i order one? |
Same here. Can I order one PCB, too?
Thanks |
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jhaible
Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24
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| Posted: Sun Nov 11, 2007 7:08 am Post subject:
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| austrohungaro wrote: | | otcx wrote: | I Want board too if there is any left.
How can i order one? |
Same here. Can I order one PCB, too?
Thanks |
I've ordered some spares from the factory
For your ordering from me, you know the procedure.
Please scroll back in the thread for the order form, and don't forget the email subject line with quantities fillied in.
JH.
_________________
"I tell you the truth, if anyone says to this mountain, 'Go, throw yourself into the sea,' and does not doubt in his heart but believes that what he says will happen, it will be done for him. Therefore I tell you, whatever you ask for in prayer, believe that you have received it, and it will be yours." (Mk 11,23f) |
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