Monday, 29 August 2016

VFE Pedals Triumvirate

A great and unique distortion pedal by VFE.
Unfortunately, with 10 internal trimmers, I didn't manage to make this layout comfortably fit in a 1590B box like I did with the others.
Original description:
The TRIUMVIRATE is a unique take on a distortion pedal. The guitar signal is first separated into three pathways (lows, mids, and highs) where the range of each is set via internal trimpots. Next, each pathway goes through its own distortion engine, with full control over the amount of gain in each band. Finally, each band is independently mixed together at the end. In short, the Triumvirate is a multi-band distortion, which works great for guitar, bass, synths, even cellos!
You can find more info and schematic on their website here.


34 comments:

  1. Would it possibly fit in a 90b if you redid the layout to use 3x1 multiturn trimmers?

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    1. I think, in this case, multi-turn trimmers would be a nightmare to regulate.
      Their pins would take 3x1 rows but the trimmer itself is larger.
      It still would not fit in a regular 1590B box.
      Maybe it could fit in a 1590BM or BT?

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  2. Holy shit, 10 trimmers?? Trimmervirate indeed, wow..

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    1. ...not to mention the six off-board pots, too. Cor!

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  4. Do you have to time the trimpot by ear? Or is there some voltage to tune to like when biasing a jet?

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    1. Extract from the VFE Website :
      There are a host of internal trimpots inside the Triumvirate. The PRE trimpot sets the gain of the clean boost before the gain stages. Crank it for insane levels of distortion, or back it off to make the Triumvirate more of a multiband overdrive. The CUT control affects a master treble cut filter that smooths out any distortion artifacts. Crank it for extra bit, or pull it back to really smooth out the top end.

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  6. Id build this just for that sexy line of trimmers! Lol

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  7. Hey this is similar in concept and execution to the zorg glorious basstar isnt it?i have made a couple of those for my two favorite local bass players they love them

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  8. Hey this is similar in concept and execution to the zorg glorious basstar isnt it?i have made a couple of those for my two favorite local bass players they love them

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  9. how would I add an 'over all' volume to this? as if 6 knobs aint enuff.

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  10. 1) build complete. It passes a clean signal. Break time. Back in a few to see if (as Mr. Wilder would say) "It's aliiiiivve."

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  11. UGH! I 'm using TL084's..is that maybe why no effect signal at all. no debugging yet as I built the board with the pix downsized and attached. probly my 200th build too so joints look good. 7660s is good. again can I use 074's/084's theoretically speaking?

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  12. voltage settings on trimmers??

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  13. Jeff, i think you need TLE2074 ICs for this not TL074s.

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  14. Gotta order a few. Do you have it working?

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    1. I think TL074 may sound slightly different but should still work. Do you have voltages?

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    2. aliexpress you can get 10 for 9 dollars.The tle2074 is a way better chip and sounds a lot better. It has much more range for gain and EQ

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    3. I agree.
      Could use TL074 just to test it while waiting the original ICs.

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  15. if someone here has time and interest, I would love to get the multiband outs separately, and make a pedal of that (without the distortion part) = one input, three outputs so I could use the multiband outs to drive different fuzz/overdrive/distortion/chorus/compressor chains.

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    1. From the schematic:

      BASS MOD - Double the value of LOW, LO MID, and HIGH
      trimpots. HI MID trimpots are 5K & 50K. PRE trimpot is 5K.

      BOOST MOD - Remove all clipping components. Change
      GAIN trimpots to A100K.

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  16. has anyone built this and have it working??

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    1. So built this up using TL074s and it worked but it was very glitchy and didn't sound correct. Had one spare TLE2074 so took the other one out my VFE Dark Horse and it sounded a lot better. Still has some glitchiness but those trimpots are a challenge in themselves.
      Cheers Alex & VFE

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    2. Ok, got something weird going on. The pedal seems to power off by itself and makes a thump sound and then powers back on again. Only does it in a millisecond but its really annoying. It also only seems to do it with bassier strings. Checked all the usual culprits, shorts, component placement, etc. but no luck. Any ideas?

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    3. Did you double check the schematic?
      Should be ok but you never know.
      What are your voltages?

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    4. Should the circuit from the IN not goo to 1k, 220n, 2.2M to ground and then to pin 3 of IC1? At the moment i see it going to pin 5. Is that correct or am i missing something? Also should the 220n, 22n and two Lo Mids not go to pin 5? Sorry if this is BS as my schematic reading skills are quite basic.

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    5. Not a stupid question.
      I just swapped pins to draw a smaller layout.
      Swapping pins 1-2-3 with 5-6-7 would give the same result.
      I do it most of the time.
      Schematics come from PCBs most of the time.
      Sometime changing IC's pins helps drawing a smaller layout.

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    6. Haven't a clue what happened but all the problems just vanished when i plugged it in. Must of had a rogue bit of copper or something floating about. Still get an unusual random tick in the background when pedal engaged but not playing. Other than that it seems verified.

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    7. Must add after playing for a bit that its a very useable and tweakable distortion which IMO has a really nice sound. Found the tick is only present when Bass Gain is maxed.
      Thanks Alex.

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    8. Hi Gavin.
      Can you try to sub the 10uF cap at the bottom of the board with a bipolar 10uF cap to see if it fixes your problem?
      That's what Brian suggested but I thought it was a regular elctr. cap on the schematic.

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  17. I've been waiting for this!!!! Now to see if it sounds exactly like my 1st-Gen or my Final-Run Triumvirate.

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  18. Cheers Alex. Will need to order some in.

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