Wampler Pantheon  [traced]

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Re: Wampler Pantheon

Postby storyboardist » 06 Oct 2018, 15:00

Here's the whole schematic redrawn with what we know so far. I'd bet C11 is 470p and C13 is 330p, as everything after the presence pot up to C15 is a Baxandall tone stack with a fixed treble control. I also added a guess at the power section.
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Re: Wampler Pantheon

Postby FeVeR2112 » 06 Oct 2018, 16:24

I will have a look at the power section to get traces and value..... :horsey:
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Re: Wampler Pantheon

Postby Manfred » 07 Oct 2018, 15:29

R14, R15, C11, C12 and the BASS-potentiometer forms a standard passive bass control circuit.
In general, the relation between C11 and C12 is 1/10, that gives C11 = C12/10.
Therefore the value of C11 could be 470pF.

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Re: Wampler Pantheon

Postby Dr Bertson » 07 Oct 2018, 16:41

Hello All!

Thank you all for superb work!
I have started to breadboard this to see if everything works.
I found this on the web. https://www.diystompboxes.com/smfforum/ ... ic=96844.0
In this you can see that C11 will be 470pF.
I have a question regarding C13, can someone that have this pedal what the value is for this?

Dr B

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Re: Wampler Pantheon

Postby Manfred » 07 Oct 2018, 17:35

Now everything becomes clear:
C13, R17, R18 and C14 forms the treble control part of the tone control whereby R17 and R18 replaces the treble potentiometer by fixed values.
Therfore the value of C13 is 330pF.
BIB_Detail.jpg
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Re: Wampler Pantheon

Postby FeVeR2112 » 07 Oct 2018, 17:37

I did some macro sight-seeing on the power section.

9V in goes to Q1(X7 RX 17) which is in circuit with a 10R resister, a diode and a 100uF/35V Cap to form 9V+. 9V+ then goes to what I think is the voltage regulators for the micro controller foot-switch/relay (9V and 5V) which I don't see it supplying anything to the primary effect circuit.

SMD Power in.png
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Re: Wampler Pantheon

Postby FeVeR2112 » 07 Oct 2018, 17:42

Dr Bertson wrote:I have a question regarding C13, can someone that have this pedal what the value is for this?


The cap is an smd type so I will need to extract it to read it's value... if we get desperate... I can reflow it out and back in... :)
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Re: Wampler Pantheon

Postby Dr Bertson » 07 Oct 2018, 18:15

Hello!

First I tested with 10n in C13, to see how it worked, then I found that what you wrote, that 330pF works the best.
So FeVeR2112, if you could only measure C13, without solder it out of the board, to what the measurement will read.
I have also started with a vero layout of this pedal using the schematic here.
I will post it when it’s working and verified.

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Re: Wampler Pantheon

Postby FeVeR2112 » 07 Oct 2018, 22:57

I extracted the cap but managed to to lose it in the shop somehow before measuring it.... :(. I hope we can figure out the value so I can replace it!

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Re: Wampler Pantheon

Postby Dr Bertson » 08 Oct 2018, 14:39

Hello All!

I have breadboard tested the schematics now and it works.
I also have made a vero layout and now I have built it after my layout.
I will check the layout so everything is ok, then I will post it.

Dr B

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Re: Wampler Pantheon

Postby FeVeR2112 » 10 Oct 2018, 05:28

Well... didnt take Robert long to get a PCB out there....https://www.pedalpcb.com/product/parthenon/

Parthenon.jpg
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Re: Wampler Pantheon  [traced]

Postby Dr Bertson » 10 Oct 2018, 17:38

I have checked the vero layout now and even built it after this layout and it works very well.
So this layout is verified.
One thing, if you want to Power this with 18V, then all electrolytic capacitors must have a rating of at least 25V.

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Re: Wampler Pantheon

Postby thesmokingman » 10 Oct 2018, 18:45

I did sort of say something via facebook to him about wanting him to do a pcb. he probably would have done one anyways, because why not?

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Re: Wampler Pantheon

Postby FeVeR2112 » 11 Oct 2018, 04:28

FeVeR2112 wrote:I extracted the cap but managed to to lose it in the shop somehow before measuring it.... :(. I hope we can figure out the value so I can replace it!


Found a 330p cap in my SMD book and replaced it on the board... all works as expected :D

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Re: Wampler Pantheon

Postby NghtLght » 17 Mar 2019, 05:27

Should't the Clip Switch be On-On-On instead? This way it would functioning as described - in the middle position both soft and hard clipping are being employed. By the way I rather prefer the "boost" mode wit no clipping at the middle position but it seems that that's not what's happening with this pedal.

Best
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Re: Wampler Pantheon

Postby HamishR » 18 Mar 2019, 05:06

Well I finally got to try this pedal - I was quite keen because in theory it addresses all of the things I liked and didn't like about the Bluesbreaker/King of Tone overdrives. The main issue of mine being the lack of low end. But I am somehow disappointed - in trying to "fix" so many things it appears that the identity has been lost. It is a rather generic sounding, slightly woofy pedal. I guess it illustrates that you can't always get what you want! The originals worked both despite and because of their shortcomings. Changing something to "correct" the tone may just open up a whole other can of worms; ie adding bass has the effect of lessening mids, etc.
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Re: Wampler Pantheon

Postby bool » 18 Mar 2019, 14:03

My un-informed gut reaction to seeing the schematic is that by changing the value of C6 you could de-woof your pedal a bit. Just a speculation, of course.
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Re: Wampler Pantheon

Postby Moafi » 17 Jun 2019, 18:09

EDIT: Disregard, indeed a dumb question: found it in the schematic already *facepalm

Hi
maybe a dumb question but i suppose the OP amp V+ and V- are put to +9V and GND i guess? Hence a symmetric supply?
thanks for the schematic btw!
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Re: Wampler Pantheon

Postby mutante » 03 Sep 2019, 07:00

Let me talk about Pantheon's Voice toggle switch. It support 3 position - soft clipping, hard clipping and both. However this reversed schematic is soft, hard and no clipping. Something wrong.
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