Saturday 17 August 2019

Earthquaker Devices Tentacle

Finally updated with orientation of Q2 corrected.

23 comments:

  1. Ha! I was just about to try and shrink the tagboardeffects layout down by a column to fit on the same piece of vero as a si bender (cause it wouldn't fit across a BB enclosure. Luckily I just checked here. Perfect!

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    1. Right on! I'm planning to build it as soon as PedalPCB upload the schematic for EQD/Sunn Life pedal which is a Tentacle, Rat and a FET booster...

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    2. Yep, I wanna build that too.

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  2. I might be wrong but i think q2 needs flipped so the collector goes to ground.

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  3. I tried it both ways and it works but if you flip it the octave is sharper and has more volume.

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    1. Thanks for the heads up, I'll update the layout soonish.

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  4. I think the LED+ and the Output (the words on the side) need to move up a row each. No?

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  5. Hi, I have no output. Checked for bridges and the usual subjects. I did notice i put a Diode (D1) backwards and fixed that but im not sure if i blew the diode or not. Any ideas?

    Also my LED is always on. Im using a DPDT Stomp switch. Any ideas for that also?

    Many thanks

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    1. Forgot to click notify me so thats the reason for this comment

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  6. I make it ,, great sound .. similar to green ringer but I think this is better … the green ringer have dry sound but tenacle have smooth and sustain sound … thanx again fuzzhead

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  7. Just built this. It's so kooky. I have no idea where you'd use it but it's fun. Pair it with a muff and make a mufftacle?

    Thank you as always

    Ian

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  8. https://youtu.be/lX__dLdjIjM

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  9. I think 9v is connected on the first row and the downside of d3 goes to ground.....

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    1. I've made this one and it works 👍

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    2. No, both 9v and Ground is at the right spots.

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  10. Made this one, it works pretty well. Honestly a little more subtle than I would have thought, and has a bit of gain/volume drop but my other green ringer was the same. I have to try running a boost after and seeing how that affects the circuit. But it definitely works

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  11. Hi! Can someone give me a hint on how to match the transistors in this circuit? Thanks in advance!

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    1. No need for transistor matching. But you D1 and D2 needs to be matched for strongest octave up effect.

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    2. These are great

      https://youtu.be/zDkU4M05DtA

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    3. Thanks guys! I was wondering if the trannies would make a difference, guess I was wrong ;-). Ian - your tentacle sounds great! Looks even better!

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    4. Thank you kindly. (I didn't know about matching the diodes... I'll look harder at them next time🧐😜)

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