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 Forum index » DIY Hardware and Software » Jürgen Haible designs
Interested in Tau Pipe Phaser / Flanger boards ?
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vtl5c3



Joined: Sep 08, 2006
Posts: 423
Location: PDX
Audio files: 13

PostPosted: Sat Jun 16, 2007 9:27 am    Post subject: Reply with quote  Mark this post and the followings unread

Yummmm....

Sound so thick you can cut it with a knife!

Romeo
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germaniac



Joined: Aug 04, 2006
Posts: 200
Location: California
Audio files: 7

PostPosted: Sat Jun 16, 2007 10:16 am    Post subject: Reply with quote  Mark this post and the followings unread

Out of this world! Casting around for superlatives, I have to give this the highest compliment I know of : totally bitchen. Great work JH!

Quote:
I'm not the only one who's employed his son as a pseudo-random function generator

LOL! Reminds of when I used to make my little brother twist the tone knob on my guitar for a "phase shifter" effect. We've come a long way since then, eh? Some of us anyway. . . .
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tomcat



Joined: Oct 14, 2005
Posts: 141
Location: earth

PostPosted: Sat Jun 16, 2007 1:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yesssssss, thats nice Very Happy

My LM394 are getting nervous already Mr. Green


Btw. i assume you can run it directly from a modular +/- 15V supply, ommiting the regulators, correct?
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Sat Jun 16, 2007 2:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

tomcat wrote:
Yesssssss, thats nice Very Happy

My LM394 are getting nervous already Mr. Green


Btw. i assume you can run it directly from a modular +/- 15V supply, ommiting the regulators, correct?


Good that you mention it.

Meanwile I have also tested the board with LM394s in the sockets, and I can proudly announce that this, also, works as intended. So the PCB seems to be fine - no need for a redesign!

I can seriously think about taking orders for pcbs soon! Smile

But before you all stock up on expensive transistor pairs: Having heard both versions, if only for a short time, I think I like the CA3046 version as much as the LM394 version. The sweep range is slightly larger with the 394s - but probably larger than necessary.
I'll probably put the 3046s back into mine and save the 394s for more demanding tasks.

As for the supply: Yes, you can just omit the regulators, the rectifiers and the big reservoir capacitors, and connect the +/-15V directly. There is no dedicated connector provided for this; but I can make a drawing where to connect the 3 wires. (Will go to holes that would otherwise be used for the regulator circuit.) Not the most elegant solution, but it will work.
Or maybe a better solution: Use the connector that was intended to receive the AC from the transformer, and solder in two wire bridges at the right place, instead of the rectifier / regulator circuit. We'll find a way! Laughing


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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ericcoleridge



Joined: Jan 16, 2007
Posts: 885
Location: NYC

PostPosted: Sat Jun 16, 2007 2:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'd like to add my voice to the chorus of admirers here-- these samples are just fantastic. I have been visiting your website for many months and am just astounded at the projects you've created and posted there. I am particularly intrigued by the page about the eventide flanger-type circuit; and now this... I can only hope that you do indeed offer your surplus PCB boards to the diy community at some point. Thanks for the inspiration.
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tomcat



Joined: Oct 14, 2005
Posts: 141
Location: earth

PostPosted: Sat Jun 16, 2007 5:30 pm    Post subject: Reply with quote  Mark this post and the followings unread

For $ 1.60 and the actual $ / Euro my DIP LM394 will be happy to jump in Wink

I thought about the wire bridge solution, this will be the most elegante way.

Btw. your dual chip layout is very slick, indeed Smile


And as said before i will take two Mr. Green
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mono-poly



Joined: Jul 07, 2004
Posts: 935
Location: Rotterdam, Netherlands
Audio files: 2

PostPosted: Sat Jun 16, 2007 9:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi Jurgen

Great work and samples man!
I'll take a few boards for me and some friends when you'll take orders.
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shawn



Joined: Dec 13, 2005
Posts: 209
Location: savannah

PostPosted: Sat Jun 16, 2007 9:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just wow on the samples.
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bubblechamber



Joined: Nov 04, 2006
Posts: 276
Location: NYC
Audio files: 1

PostPosted: Sun Jun 17, 2007 11:18 am    Post subject: Reply with quote  Mark this post and the followings unread

great job it sounds really good, I'll need 2. thanks for all the hard work you've out into this.
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funkyfarm



Joined: Jan 21, 2007
Posts: 583
Location: France
Audio files: 3

PostPosted: Sun Jun 17, 2007 3:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

+2 to (this anti-blue-wave part of) france !

a thousand-pieces-order of CA3046 should follow...
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bambam



Joined: Feb 20, 2007
Posts: 60
Location: australia

PostPosted: Sun Jun 17, 2007 7:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi Jurgen

I'd love one of these pcbs and depending on cost i'd make it two. Can't wait to get one of these built!

Great job Wink

Brett
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numbernone



Joined: Aug 16, 2006
Posts: 477
Location: new york city

PostPosted: Mon Jun 18, 2007 8:14 am    Post subject: Reply with quote  Mark this post and the followings unread

One or two for me as well please!!
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Mon Jun 18, 2007 9:02 am    Post subject: Taking orders for Tau Phaser / Flanger Boards *now* Reply with quote  Mark this post and the followings unread

Taking orders for Tau Phaser / Flanger Boards *now*.

I will be out of town on a business trip till the end of the week, and I thought I should post this now, and see what comes back when I return. Smile

I’m offering PCB boards for the 20-pole Phaser (redesigned Tau Pipe) for 27.00 Euro + shipping. (I’ll charge actual shipping costs, no overhead.) If there are any Taxes / Customs to pay in your country, you have to handle and pay this, too.

Several people have shown interest in these boards, via mail and in different forums.

Regardless whether you have already sent such a mail of interest or not: If you are definitely willing to buy one (or more) boards, please send me an email (not a forum PM!) in the following form:

-------------------------------------------------------------------------------------------------------------------------

send to:
jhaible[at]debitel[dot]net

Subject line of Email:
Tau PCB order 1 piece (or: Tau PCB order 2 pieces, etc.)

Text field of Email:

Mr. / Mrs.
Your Name
Your full international Postal Adress,
including Zip code, Country, etc.

(I will copy and paste this for your shipment adress)

paypal mail adress: (your paypal account email)
or other method of payment. Cash in Letter, or Überweisung (Germany only)

I’m ordering N (insert number) of boards for the 20-Pole Phaser for EUR 27.00 each, plus shipping.

--------------------------------------------------------------------------------------------------------------


Some remarks about this project:

(1) Time and methods of payment

I don’t take advance payments. I’ll only ask you to pay anything when I have your boards ready to ship.
Paypal is my preferred method for international payment. If you don’t have a paypal account yet, you have a few weeks to set one up and transfer some money from your bank account to the paypal account.
Bank transfer (Überweisung) is an option for German buyers only.
If you, for some reason, don’t want to pay with paypal, you can send me cash in a letter, at your own risk. Please tell me, if you want to do this, in your order email.



(2) Total costs of the project

Many who showed interest in this have asked about the price of the PCB and a bill of materials, to calculate what the whole project will cost.

Well, you know the price for the PCB now. I have not made a bill of materials yet (not even a complete schamatics drawing). This will all come as I find the time to do it. (It’lI be several weeks between the order and the delivery of PCBs, no need to hurry.) I have published a PDF of the component overlay of the board here:
http://www.jhaible.heim.at/tau/jh_tau_component_overlay_with_comments.pdf
You should be able to roughly calculate the expenses for components from this.
(Maybe someone is faster than me in making a bill of materials from this; it is encouraged to publish this and share it with others then!)

Costs for front panel components will highly depend on the quality you choose, and on the extras you’re going to implement.
Absolute minimum requirements: 4 potentiometers, 3 audio jacks (I made the demos with this.)
Optional: Input and Output level potentiometers, switches for different modes and bypass, jacks for CV inputs and outputs.
Don’t forget the costs for a front panel and enclosure, and a wall wart or other power supply!

(3) Project documentation

I have set up a web page for this:
http://www.jhaible.heim.at/tau/jh_tau.html
This contains all the relevant stuff, and will be updated with all major news.
Ongoing discussion will be on the electro-music forum:
http://electro-music.com/forum/topic-18396.html


(4) Components

Resistors:
1% or 2% metall film resistors are cheap nowadays. Don’t bother to use anything else.
Capacitors:
For the ladder, you need 40 equal valued capacitors.
I recommend 15nF 5% Wima MKS-2 types. (5mm spacing)
7.5mm spacing Siemens MKT caps will also work.
ARP specifies capacitor tolerances of 20% for the (similar) Quadra Phaser, so it shouldn’t bee too critical. I recommend using 5% caps, though.
Other capacitor values, see component overlay.
Bypass capacitors: You can solder SMD parts (0805) beneath each opamp; 100nF recommended. If you don’t like SMD parts, I’m sure you can use tiny ceramic caps with shortened leads here, too.
Opamps: Except for one low noise OPA2134, you can use cheap TL072s.
Transistor arrays:
I recommend using 11 CA3046 ICs (10 for the ladder, 1 for the 1/x converter.) (tested by me)
Alternatively, you can use 1 CA3086 or CA3086 for the 1/x converter, plus 20 LM394 for improoved SNR and precision. (also tested by me.)
Or you can use 11 CA3086s (not tested by me, but spec’ed in the similar ARP Quadra Phaser)
Or you can use 20 SSM2210 or 20 MAT-02 instead of the 20 LM394 (not tested by me), plus one CA3086 or CA3046.
Tempco resistor see below.


(5) Temperature compensation

I have used a 560 Ohm tempco resistor for my own prototype, because I had a few in the drawer.
You can use other values (like the ever favorite, 1kOhm). In that case, you’ll need to also change the value of one other resistor and one trimpot. I’ll give you assistance on this.
The effect will also work without any tempco resistor at all. In that case, just solder in an ordinary 560 Ohm resistor. The V/Oct tracking will slightly change with temperature, but hey, it’s a phaser / filter / resonator, not a VCO after all!

(6) Power Supply

The board needs a 18V AC / ca. 5 Watt (either single secondary transformer, or 2 * 18V dual secondary transformer). 15V AC may be enough in most cases, too, but you have less margin against mains voltage drops.

I highly recommend using a completely insulated Wall Wart if you’re not trained and experienced to work with mains voltage. That’s the good thing about this project: just connect a Wall Wart and you have a complete, stand alone module.

Otherwise, if you want to build your own power supply, you must know how to use mains transformers, where to put fuses etc., know about safety issues – it’s completely on your own risk. Mains voltages can be lethal!

Alternatively, the effect can be powered with stabilized +/-15V DC dual power supply. Then you can electrically integrate the effect into various modular sythesizer systems (like MOTM or others.) For this, some components on the board must be omitted, and wire bridges soldered in instead. I’ll give detailed instructions for this option later.


(7) Component value printing on the PCB.

I have decided to print the actual component values onto the board instead of reference designators. So you *won’t* have to read “R25”, look up the value (like, 620 Ohm) in some table, then look again where to put it into the pcb. Instead, you have “620” directly printed on the board – what you see is what you solder in. That’s the way I love to work. Smile
Of course this is a quite daring approach for me to do this, because if I had to change a component value, I couln’t just update a _list_. I’ve been lucky, though, and everything works as intended with the values printed on the board. Smile But of course I expect some modifications / improovements to come in the future, either from myself or from the diy community.


(8 ) Handling of the whole project

This is my first time offering PCBs for others to build projects that I have designed or (in that case) redesigned. I’m not doing this professionally; as you all know I love to build synthesizers and effects in my spare time for fun, and this is (hopefully) an extension of this activity. I hope it will be as much fun for everybody who participates as it is for me.
Please do _not_ expect to get a foolproof construction manual (like the MOTM kits, for instance). You *can* expect to get the same kind of PCB as from which I have sucessfully built my own prototype, so with the right skill and with working components you can build your own effect device sucessfully as well. Other than that, I don’t offer any guarantees, warranty, whatever. I’m offering this as a private person, and I will not take any PCBs back, repair them, or similar. (I expect lively discussion in the relevant forums and mailing lists, however; so relatively unexperienced builders will probably be able to manage that project as well.) Whether I will make similar projects available in the future will highly depend on how smooth this one will work – it’s an experiment.

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)

Last edited by jhaible on Mon Jun 18, 2007 1:35 pm; edited 1 time in total
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Funky40



Joined: Sep 24, 2005
Posts: 875
Location: Swiss
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PostPosted: Mon Jun 18, 2007 12:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

you or an admin should change the writing form of the eMail Adress.
To post this on Forums can cause SPAM

normally People put @ in this Form : [at]
same with . = [dot]

maybe with space between [ at ]
I don't know how the robots are reading.
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Mon Jun 18, 2007 1:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Funky40 wrote:
you or an admin should change the writing form of the eMail Adress.
To post this on Forums can cause SPAM

normally People put @ in this Form : [at]
same with . = [dot]

maybe with space between [ at ]
I don't know how the robots are reading.


Thanks for the hint - I've changed it accordingly.
I hope no mail will get lost, that way!

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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Scott Stites
Janitor
Janitor


Joined: Dec 23, 2005
Posts: 4121
Location: Mount Hope, KS USA
Audio files: 96

PostPosted: Mon Jun 18, 2007 3:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi JH,

Maybe a pesky question, but I ask it here in the off chance other people might wonder the same thing:

This morning, as soon as I saw your post, I sent an email which I think followed the correct format.

In other words I put as the subject "Tau PCB Order 1 Piece". In the body of the email I included my shipping address, my paypal address, and the line "I'm ordering 1 board for the 20-Pole Phaser for EUR 27.00 each, plus
shipping."

I received an email this afternoon thanking me for my interest, and then reiterating the procedure for ordering a board. This leaves me wondering if my order actually was received and or if I had done something incorrectly, or if you just later happened to email an announcement to people who'd expressed an interest.

Does my receiving that email this afternoon mean I need to re-order or am I just worrying too much? Very Happy (I don't wanna miss out on a Tau Pipe).

Cheers,
Scott

_________________
My Site
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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Tue Jun 19, 2007 12:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Scott Stites wrote:
Hi JH,

Maybe a pesky question, but I ask it here in the off chance other people might wonder the same thing:

This morning, as soon as I saw your post, I sent an email which I think followed the correct format.

In other words I put as the subject "Tau PCB Order 1 Piece". In the body of the email I included my shipping address, my paypal address, and the line "I'm ordering 1 board for the 20-Pole Phaser for EUR 27.00 each, plus
shipping."

I received an email this afternoon thanking me for my interest, and then reiterating the procedure for ordering a board. This leaves me wondering if my order actually was received and or if I had done something incorrectly, or if you just later happened to email an announcement to people who'd expressed an interest.

Does my receiving that email this afternoon mean I need to re-order or am I just worrying too much? Very Happy (I don't wanna miss out on a Tau Pipe).

Cheers,
Scott


I fear something is really wrong with email right now. I have sent the same text to three mailing list last nights and I haven't seen it appear there so far. (Haven't seen any mail from any of these lists since last night.)

Has anybody seen my "taking orders" mail on Analogue Heaven, synth-diy or the MOTM list?

Because I didn't see anything, I posted the same mail to all who previously showed interest (per email) directly.

Scott, so far I haven't received any order mail from you.

All right, glitches in the internet always seem to happen when you need it the most. Mad

But don't worry. Send it again - if I get it twice, I can easily filter it out.

As I said, I'll be on a business trip for 4 days soon. But when I come back, I'll send confirmation mails. If you don't get any confirmation mail until Saturday, please complain to me and send it again.

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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jhaible



Joined: May 25, 2007
Posts: 2014
Location: Germany
Audio files: 24

PostPosted: Tue Jun 19, 2007 12:33 am    Post subject: Reply with quote  Mark this post and the followings unread

I've just sent confirmation mails for all orders I've received so far (not many).
If you already ordered, but don't get a confirmation mail, please send your order again.

Thanks,

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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mono-poly



Joined: Jul 07, 2004
Posts: 935
Location: Rotterdam, Netherlands
Audio files: 2

PostPosted: Tue Jun 19, 2007 7:23 am    Post subject: Reply with quote  Mark this post and the followings unread

THat's weird i've seen the message on AH or SDIY and did reply with an order.
No confirmation yet.
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krisp14u



Joined: Nov 11, 2006
Posts: 206
Location: uk

PostPosted: Tue Jun 19, 2007 8:20 am    Post subject: Reply with quote  Mark this post and the followings unread

jhaible RE email wrote:


Order received - thank you!

JH.

JH.


I got this today so i guess i'm in Smile

now to get some parts in Shocked

_________________
Cheers

Paul Darlow

www.krisp1.com
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germaniac



Joined: Aug 04, 2006
Posts: 200
Location: California
Audio files: 7

PostPosted: Tue Jun 19, 2007 9:58 am    Post subject: Reply with quote  Mark this post and the followings unread

The email I sent JH yesterday got bounced back to me today as "Mail Delivery Failed." Will send again today. . . .
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sonicwarrior



Joined: Dec 22, 2005
Posts: 226
Location: Cologne, Germany

PostPosted: Tue Jun 19, 2007 12:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

I have seen the message on the synth-diy list, too.

Got my order confirmation this morning.
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Fernando



Joined: Dec 30, 2006
Posts: 207
Location: Barcelona, Spain

PostPosted: Tue Jun 19, 2007 12:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

friends, let's wait until Jurgen cames back on Saturday...
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shawn



Joined: Dec 13, 2005
Posts: 209
Location: savannah

PostPosted: Tue Jun 19, 2007 2:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

still need to send an email tonight for this. fun fun, can't wait!
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johans121



Joined: Jun 19, 2007
Posts: 174
Location: Memphis, TN (USA)

PostPosted: Tue Jun 19, 2007 8:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

I put my order in Smile
_________________
Don't feed me Indian, you WILL regret it!

-Jim
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