Wednesday 18 November 2020

Ghost Effects Warmjet V

 Ghost Effects take on the rare and elusive WEM Project V Fuzz. Compared to the original, some overkill filtering has been removed and Edge and Drive switches has been replaced with a tone control labelled Edge.

Information regarding mods and trimpot setup is avaiable HERE.

 
 

 
 


 

 


10 comments:

  1. Now verified and it sounds massive! And the Edge control is really useful.
    Will experiment with transistors though since there are some fizz in the decay with BC108Bs...

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    Replies
    1. Hi Anders,
      Did you ever try any different transistors with this?
      Cheers
      Ben

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    2. I've built this a few times - easily one of my favourite fuzz circuits - and have used just about every transistor type on hand, and none of them have sounded bad. Generally, I like the dynamic breathing room that lower hfe transistors give the circuit (e.g. PN2222, 2N4123). If you want it gnarlier, bump the gain in the Darlington pairs (Q1&2, Q5&6). Also, the mods on the Ghost Effects build doc for bigger low-end are VERY well worth it - it sounds way bigger without getting farty at all.

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    3. Just had a peel inside my favourite build of this and all the NPNs are PN2222As and the PNP is a metal-can 2N2907A.

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    4. Thanks Sebastian. I’ll try that 👍.

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  2. Awesome, thanks. The original was on my to do list, but if This one has some improvements,€'d rather make it.

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  3. What function do those 4.7r resistors have? I can get to 4.4r and wouldn't have thought 0.3r would do anything, but would it?

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  4. Im counting 11 links? Am I wrong?

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    Replies
    1. Correct, there ARE actually 11 links. By the way, try wiring the 50k bias trimmer as an external B50k pot—it gives you access to a much wider array of sounds (and there are a LOT hiding in this circuit).

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    2. Yes, 11 cuts it is, layout is updated.

      An external Bias pot is really useful in this circuit. If doing so, I highly recommend replacing the link connecting to the base of Q3 with a 1k-4,7k limiting resistor. Otherwise the transistor will be fried when the wiper of the Bias pot hits one of its outer lugs...

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