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Tuesday, November 27, 2018

Wampler Pantheon

The Pantheon is Brian Wampler's take on the classic Bluesbreaker circuit. It adds some of the mods from the King of Tone as well as a Baxendall tone stack for the Bass control (the would be treble control of the Baxendall is fixed) and a gain switch to set different min/max settings of the Drive pot. Fits in a 125B like the original. If you're not feeling like etching or grabbing the perfboard, there are boards available on the store.



37 comments:

  1. Has the PCB been verified?

    Looks like you guys are the first to have stock/sell a "working" pcb? (PedalPCB looks like the board hasn't been released yet!)

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    1. The board in the store has been (I don’t put anything up in the store that hasn’t been verified). The one above has not yet.

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    2. Awesome, thank you for the confirmation! :D

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  2. Hi, i made it tonight, but it is not work, becouse you made mistake in the second opamp. 100k between 2&3 legs, but have to go between 2&1!

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  3. & presence pot torning to the another side

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    1. This is actually correct according to the partial schematic Brian posted on FSB:

      http://freestompboxes.org/viewtopic.php?f=7&t=29329#p272431

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  4. Thanks for working on it, Bit Zzoyd!

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    1. This comment has been removed by the author.

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  5. verified. But i have taken 4 Bat 41 Instead 4148 into cascade(where clip 5,6)! and yet, Pantheon has very hard sound with low gain! I dont know, why. I think it's just a character blues breaker schem...

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    1. Hi vit, how conect the 4 bat41 in cascade ?

      Thanks

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  6. Good afternoon. Could someone pass me the connections of the SPDT (gain) and DPDT (clip) switches?
    Thankful.

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    1. Pads correspond to the numbering system laid out in the General Layout Notes tab.

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    2. So, of the 6-pin dpdt on-off-on switch, do I use pins 3 and 4?

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  7. Build it Last Night, Works Perfect! Sounds Great, ( i etched the previous version, But it was only a Little correction!)
    Congratulations to this layout!
    Thanks very much!

    Greetings from Austria
    Bluesanderl

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  8. I etched this board tonight and it appears that the etching layout is missing a hole/solder pad that appears on the perfboard layout. The 47pF capacitor between pins 1 and 2 of the 4580 seems to only have a hole for pin 2. There also seems to be an extra hole for pin 3.

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  9. One last note on this. In addition to the 47pF capacitor (C3) being across pins 2 & 3 of IC1 on the etched layout instead of pins 1 & 2 like it's supposed to be, I'd also suggest using a smaller power supply jack and drilling it lower on the enclosure. The standard jack can fit, but it's VERY tight and almost touches the two switches.

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  10. Two positions of the gain switch on my build sound the same. Anyone have an idea what I'm doing wrong?

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  11. The same thing happens to me :/

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    1. Comigo também aconteceu. Alguma solução?

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    2. Keep the same, try to change some values but without result, I made 3 circuits and the 3 are the same, I keep looking in forums.

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    3. Ok.Acho que vou deixar com uma switch on-off.

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  12. @Effects Layouts, what would be a good replacement for the 4580? I have a good stock of jrc4558, tl072, and couple of tl062. Thank you for this layout by the way. :)

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    1. Any dual opamp should work fine. The ones you listed are good subs.

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    2. Cool. Will socket both IC and listen to what sounds best to my ears. This is my first perf build. Been building vero for a while now and would like to try this way because of board-mounted pots to make boxing easier. Btw the drilling templates in your site, I see the Pantheon but looks like the location of the switches are off (Top of enclosure). Should I wire the t.switches offboard? Thanks again man.

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    3. Oh yeah, looks like off-board wiring for the togglesw. I didn't notice until now that clip 1 & 2 had to be wired at the bottom. But just to confirm, those drilling templates are same location for the board mounted pots? For any layout that has them.

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    4. That's correct. Switches are almost always soldered off board unless otherwise noted since they're pretty hard to solder to a single sided board from the solder side. And yes, any layout with board mounted pots (unless it's a really simple one with only 1-2 pots) has a drill template in the Dropbox folder.

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  13. All right... so there are several things to pay attention to:
    - presence pot should be wired the oposite way - lugs 1 and 3 sould be swapped (this is how it works on original pedal)
    - voice switch should be on-on-on to have both clipping stages engaged in the middle position (like in original pedal) and not all diodes lifted (like it is now in this layout)
    - boost switch should be wired differently: looking from the top 3,1,2 and not 3,2,1. Otherwise you don't have any difference in two positions. When you connect it the way I suggest you will have 3 gain stages like in original pedal
    - you also need to drill one additional hole at the leg one of the IC to put the 47pF cap between legs 1 and 2 and not 2 and 3 - there is a small mistake in the etching layout
    Having said that I must say that this one sounds really good! Thanks!

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    1. -the boost switch is wired correct but the 1meg resistor on gain3 needs to be disconnected and wired to gain1

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  14. Hi. Thanks for layouts. I built this one. It's working but i have a problem. Volume too low. Why could it be. I'll be happy if you can help me.

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  15. Works well just cant get the presence to work. tried reversing 1 and 3 to no avail.

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