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Raymond Koonce Raymond Koonce is offline
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Default ETF photos

Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This was
a great meeting.

Regards,

Raymond
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Ian Bell[_2_] Ian Bell[_2_] is offline
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Default ETF photos

Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This was
a great meeting.

Regards,

Raymond


I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??

Cheers

Ian
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John Byrns John Byrns is offline
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Default ETF photos

In article ,
Ian Bell wrote:

Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This was
a great meeting.


I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??


Another question for anyone that may have the answer. In the Program I notice
an event titled "Shootout - Sound processors", what is a "Sound processor" in
this context? There is a photo of Pete Millett's sound processor for the
shootout, but the photo gives little hint as to what the function of this simple
device might be?

--
Regards,

John Byrns

Surf my web pages at, http://fmamradios.com/
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Raymond Koonce Raymond Koonce is offline
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Posts: 93
Default ETF photos

Ian Bell wrote:
Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This
was a great meeting.

Regards,

Raymond


I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??

Cheers

Ian


Hi Ian,

His presentation is not listed on the ETF site, but I'll drop him an
email and see if he can share it. It was very interesting, but I'm
afraid I didn't listen closely enough. I'm still poking around trying
to figure out how to get my triode model worked into the schematic.
Curvetracer looks very interesting, in that you can take a scan of any
tube's curves and digitize it for use in LTSpice.

Best regards,

Raymond
  #5   Report Post  
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Raymond Koonce Raymond Koonce is offline
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Posts: 93
Default ETF photos

John Byrns wrote:
In article ,
Ian Bell wrote:

Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This was
a great meeting.

I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??


Another question for anyone that may have the answer. In the Program I notice
an event titled "Shootout - Sound processors", what is a "Sound processor" in
this context? There is a photo of Pete Millett's sound processor for the
shootout, but the photo gives little hint as to what the function of this simple
device might be?



Hi John,

I asked Pete what his device does and I got the tongue-in-cheek reply,
"It processes sound." The shootout is a totally subjective evaluation
of the different devices and is done all in fun. I think Pete's
processor came in third or fourth. The effects were quite subtle, IMO.

Best regards,

Raymond


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Ian Bell[_2_] Ian Bell[_2_] is offline
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Posts: 861
Default ETF photos

Raymond Koonce wrote:
Ian Bell wrote:
Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This
was a great meeting.

Regards,

Raymond


I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??

Cheers

Ian


Hi Ian,

His presentation is not listed on the ETF site, but I'll drop him an
email and see if he can share it. It was very interesting, but I'm
afraid I didn't listen closely enough.


Thanks for that. Fingers crossed.

I'm still poking around trying
to figure out how to get my triode model worked into the schematic.
Curvetracer looks very interesting, in that you can take a scan of any
tube's curves and digitize it for use in LTSpice.


Is it a commercial product? Does it have a web site? A Google search for
curvetracer brings up loads of hits but none seem to fit your description..

Cheers

Ian
Best regards,

Raymond

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Raymond Koonce Raymond Koonce is offline
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Posts: 93
Default ETF photos

Ian Bell wrote:
Raymond Koonce wrote:
Ian Bell wrote:
Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This
was a great meeting.

Regards,

Raymond

I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube
models. Do you know if it is possible to obtain copies of this
presentation??

Cheers

Ian


Hi Ian,

His presentation is not listed on the ETF site, but I'll drop him an
email and see if he can share it. It was very interesting, but I'm
afraid I didn't listen closely enough.


Thanks for that. Fingers crossed.

I'm still poking around trying
to figure out how to get my triode model worked into the schematic.
Curvetracer looks very interesting, in that you can take a scan of any
tube's curves and digitize it for use in LTSpice.


Is it a commercial product? Does it have a web site? A Google search for
curvetracer brings up loads of hits but none seem to fit your description..

Cheers

Ian
Best regards,

Raymond


Ian,

I think I was mistaken in the name of the curve tracing software. Try
this link http://sourceforge.net/projects/curvecaptor/ to download it
and give it a try. I have not downloaded this software yet, so I have
no idea how it works. Please let me know if you figure it out.

Drop me an email privately and I'll send you a copy of Aernoud's power
point presentation. It's not as much as I expected, but maybe it'll
show you something.

Best,

Raymond
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Ian Bell[_2_] Ian Bell[_2_] is offline
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Posts: 861
Default ETF photos

Raymond Koonce wrote:
Ian Bell wrote:
Raymond Koonce wrote:
Ian Bell wrote:
Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This
was a great meeting.

Regards,

Raymond

I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube
models. Do you know if it is possible to obtain copies of this
presentation??

Cheers

Ian

Hi Ian,

His presentation is not listed on the ETF site, but I'll drop him an
email and see if he can share it. It was very interesting, but I'm
afraid I didn't listen closely enough.


Thanks for that. Fingers crossed.

I'm still poking around trying
to figure out how to get my triode model worked into the schematic.
Curvetracer looks very interesting, in that you can take a scan of
any tube's curves and digitize it for use in LTSpice.


Is it a commercial product? Does it have a web site? A Google search
for curvetracer brings up loads of hits but none seem to fit your
description..

Cheers

Ian
Best regards,

Raymond


Ian,

I think I was mistaken in the name of the curve tracing software. Try
this link http://sourceforge.net/projects/curvecaptor/ to download it
and give it a try. I have not downloaded this software yet, so I have
no idea how it works. Please let me know if you figure it out.


Looks like it could be very useful. Author says he used it for several
years before making it publicly available in 2005. No real activity on
it since then and as far as I can see there is zero documentation. That
said, it is written in C and Tcl/Tk both of which I am familiar with so
I should be able to get it going.

What it appears to do is take real tube curve data and build spice
models from it. I would like to take Tom Mitchell's data from his Audio
Designers Tube Register and feed it into this program.

Drop me an email privately and I'll send you a copy of Aernoud's power
point presentation. It's not as much as I expected, but maybe it'll
show you something.


Cheers. Private email sent.


Cheers

Ian

Best,

Raymond

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Ian Bell[_2_] Ian Bell[_2_] is offline
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Posts: 861
Default ETF photos

flipper wrote:
On Wed, 17 Dec 2008 22:08:06 +0000, Ian Bell
wrote:

Raymond Koonce wrote:
Ian Bell wrote:
Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This
was a great meeting.

Regards,

Raymond
I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??

Cheers

Ian
Hi Ian,

His presentation is not listed on the ETF site, but I'll drop him an
email and see if he can share it. It was very interesting, but I'm
afraid I didn't listen closely enough.

Thanks for that. Fingers crossed.

I'm still poking around trying
to figure out how to get my triode model worked into the schematic.
Curvetracer looks very interesting, in that you can take a scan of any
tube's curves and digitize it for use in LTSpice.

Is it a commercial product? Does it have a web site? A Google search for
curvetracer brings up loads of hits but none seem to fit your description..


I think they're talking about Curvecaptor, which works by 'curve
tracing' the triode plate curves.

http://sourceforge.net/projects/curvecaptor/

With Windows you also have to install ActiveTcl. I don't remember
exactly where I got the one I'm using but I think you can get it here.

http://www.activestate.com/Products/...cl/index.mhtml

You run Curvecaptor via Curvecaptor.tcl

You make a pic of the tube curves, load it into Curvecaptor, and then,
essentially, 'trace' the curves dot by dot. The program records the
X-Y coordinates of each as you do . You're then offered a choice of
models (well, it defaults to one but there's a drop down menu for
more), you pick which model you want to use and it shows you a plot
generated from the model picked so you can see how well it does. You
can change the model type and repeat the plot process as often as you
like in order to compared and pick which model you think does the best
job. It'll then generate the two versions of spice code and you
cut/paste the one for your spice program into an appropriate text
file.

Note that it just makes curve equations and there is no grid current
modeling. Oh, manually add the capacitances using an existing model as
a guide for the format.

The pic needs to be a GIF and I forget what the 'maximum' dimensions
are but looking at the ones I made it's about 700x550. Smaller reduces
the resolution but bigger doesn't 'fit' inside the window allowed. I
think I generally set width to 700 and the height, due to the curve
graph itself, just came out whatever it was. Oh, and you do need the
axis numbers because that's going to be one of the 'traces' (so it can
correct for imperfect alignment and, of course, it needs to know what
values the 'dots' are being plotted against).

Tedious but relatively simple once you've made it through one.

Cheers

Ian


Interesting. I downloaded it and ran it on my Linux box - it worked OK
but it had no documentation and I could not work out what sort of file
it wanted. Does the Windows version have more documentation?

Cheers

Ian
Best regards,

Raymond

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Ian Bell[_2_] Ian Bell[_2_] is offline
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Posts: 861
Default ETF photos

flipper wrote:
On Thu, 18 Dec 2008 11:37:33 +0000, Ian Bell
wrote:

flipper wrote:
On Wed, 17 Dec 2008 22:08:06 +0000, Ian Bell
wrote:

Raymond Koonce wrote:
Ian Bell wrote:
Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look at
http://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photos
http://www.triodefestival.net/index....tf-2008-photos. This
was a great meeting.

Regards,

Raymond
I notice on the Agenda that there was a session by Aernoud Dekker on
LTSpice and also on using curvetracer for the creation of tube models.
Do you know if it is possible to obtain copies of this presentation??

Cheers

Ian
Hi Ian,

His presentation is not listed on the ETF site, but I'll drop him an
email and see if he can share it. It was very interesting, but I'm
afraid I didn't listen closely enough.
Thanks for that. Fingers crossed.

I'm still poking around trying
to figure out how to get my triode model worked into the schematic.
Curvetracer looks very interesting, in that you can take a scan of any
tube's curves and digitize it for use in LTSpice.

Is it a commercial product? Does it have a web site? A Google search for
curvetracer brings up loads of hits but none seem to fit your description..
I think they're talking about Curvecaptor, which works by 'curve
tracing' the triode plate curves.

http://sourceforge.net/projects/curvecaptor/

With Windows you also have to install ActiveTcl. I don't remember
exactly where I got the one I'm using but I think you can get it here.

http://www.activestate.com/Products/...cl/index.mhtml

You run Curvecaptor via Curvecaptor.tcl

You make a pic of the tube curves, load it into Curvecaptor, and then,
essentially, 'trace' the curves dot by dot. The program records the
X-Y coordinates of each as you do . You're then offered a choice of
models (well, it defaults to one but there's a drop down menu for
more), you pick which model you want to use and it shows you a plot
generated from the model picked so you can see how well it does. You
can change the model type and repeat the plot process as often as you
like in order to compared and pick which model you think does the best
job. It'll then generate the two versions of spice code and you
cut/paste the one for your spice program into an appropriate text
file.

Note that it just makes curve equations and there is no grid current
modeling. Oh, manually add the capacitances using an existing model as
a guide for the format.

The pic needs to be a GIF and I forget what the 'maximum' dimensions
are but looking at the ones I made it's about 700x550. Smaller reduces
the resolution but bigger doesn't 'fit' inside the window allowed. I
think I generally set width to 700 and the height, due to the curve
graph itself, just came out whatever it was. Oh, and you do need the
axis numbers because that's going to be one of the 'traces' (so it can
correct for imperfect alignment and, of course, it needs to know what
values the 'dots' are being plotted against).

Tedious but relatively simple once you've made it through one.

Cheers

Ian

Interesting. I downloaded it and ran it on my Linux box - it worked OK
but it had no documentation and I could not work out what sort of file
it wanted. Does the Windows version have more documentation?


Nope.

See my other post. What it's asking for when first opened is the tube
curves GIF (at least on windows) file. I mean, a 'picture' of the
curves, in GIF format, that you'll then use to 'graphically' pick data
points from.


Yes, saw your other post. Useful little tutorial that.


You can save data at each step and then 'resume' from there. Like, if
you've done the curve tracing and saved the .DAT file you can kill the
opening GIF file dialogue, go to the data step, and load the .DAT
file. I mention that because you mentioned wanting to load in
someone's data so if you look at the .DAT file format you might be
able to come up with a way of just transferring the data into one and
go from there.


Yes, the .DAT file looks promising; I'll check out its format. I also
emailed the author so maybe I'll get some insight from that source too.

Cheers

ian



Cheers

Ian
Best regards,

Raymond



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Andre Jute[_2_] Andre Jute[_2_] is offline
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Default ETF photos

On Dec 16, 1:02*pm, Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. *Take a look athttp://www..timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photoshttp://www.triodefestival.net/index.php?page=etf-2008-photos. *This was
a great meeting.

Regards,

Raymond


Thanks for sharing, Raymond. A that wise Austrian philosopher D
Ennemoser once said, you can't really know about high fidelity until
you are over fifty and going light on top. Still, some wonderful ideas
there, and some beautiful amps, from folk who look pretty young and
pretty bushy on top. There is hope for the world yet!

Andre Jute
Visit Jute on Amps at http://members.lycos.co.uk/fiultra/
"wonderfully well written and reasoned information
for the tube audio constructor"
John Broskie TubeCAD & GlassWare
"an unbelievably comprehensive web site
containing vital gems of wisdom"
Stuart Perry Hi-Fi News & Record Review
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tubegarden tubegarden is offline
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Posts: 343
Default ETF photos

Hi RATs!

There is hope for the world

Just not with us in it ...

I am resurrecting an 80, 56, 56, IT 2A5 amp. Only part with any ID is
the IT, PiLot No. 408.

I have no real expectations, just curiousity

Happy Ears,
Al

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bigwig bigwig is offline
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Posts: 118
Default ETF photos

On 16 Dec, 13:02, Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. *Take a look athttp://www..timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photoshttp://www.triodefestival.net/index.php?page=etf-2008-photos. *This was
a great meeting.

Regards,

Raymond


Only just saw the pics. Nice, what is/who built the little "double
decker" job. I have a couple of QQV/E06-40s that would be good for
something like that. I remember Fred Nachbaur and someone else talking
about building something along the same lines.
  #14   Report Post  
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Raymond Koonce Raymond Koonce is offline
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Posts: 93
Default ETF photos

bigwig wrote:
On 16 Dec, 13:02, Raymond Koonce wrote:
Hi RATs,

I finally got some photos posted from ETF 08. Take a look athttp://www.timebanditaudio.com/ETF08/etf2008.html

Also visit the ETF website for additional links to photoshttp://www.triodefestival.net/index.php?page=etf-2008-photos. This was
a great meeting.

Regards,

Raymond


Only just saw the pics. Nice, what is/who built the little "double
decker" job. I have a couple of QQV/E06-40s that would be good for
something like that. I remember Fred Nachbaur and someone else talking
about building something along the same lines.


I don't know who built that one, but it sure was cute. I didn't get to
hear it unfortunately. There's just too much there. The 833A amps with
the preamp with 100THs and 866As was pretty impressive. Does about 40
watts SE. It looks nice at night too:-)

Raymond
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