Noise Terminator (Decimator 2 Gstring) jn Effects loop problem

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es335
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Post by es335 »

Hi,

I build this pedal from PCB Guitar Mania and if I use it with a dirt pedal in the loop of the Terminator itself all works well.
However, when I try to use it in the Serial Effects send / return of my Amp the signal of the guitar is sent straight to the effects return, instead of the guitar out of the Noise Terminator.

Anyone experienced this problem?

Thanks, Ron

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plush
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Post by plush »

Draw connection scheme and post your amp's model.

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es335
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Post by es335 »

It is a Mesa boogie Fillmore 25 with a Serial Effects Loop.

Problem is that in this situation the sound from the guitar is coming through the effects return of the amp and so bypassing the OUT on the Terminator.
So the guitar sound is not coming through the IN (pre-amp) of the AMP.

The only sound coming in through the effects return should be the delay sound.
Also without the delay and just connecting the Dec IN and Dec OUT to the send and return I have the same problem.

Maybe there is a flaw in the Design of this Noise Terminator?
As I said it works properly when just running a Dirt pedal between the Dec IN and Dec OUT, so when not using the Effects loop of the Amp.


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plush
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Post by plush »

I believe it should be connected the other way

Guitar ---> Noise Terminator In (Guitar in)
Noise Terminator Send (Guitar out) ---> AMP Input
AMP Loop Send ---> Noise Terminator Return
Noise Terminator Out ---> FX pedal in AMP Loop or AMP Loop Return

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es335
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Post by es335 »

Ok thanks I will try that and let you know.

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es335
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Post by es335 »

Well got it figured out...

Guitar ---> Noise Terminator IN (Guitar in)
Noise Terminator OUT ---> To FX pedal IN and FX Pedal OUT ---> AMP Return
Noise Terminator SEND ---> To Dirt pedals ---> Amp IN
Noise Terminator RETURN ---> Amp Send

Very weird as there is no Documentation on how to connect this PCB
(the Manual of the Decimator itself also show different configurations)

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JorgeRodriguez
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Post by JorgeRodriguez »

What's up people, I hope you're all well

Here I leave some rar of Decimator projects that I found on the web

The second file is a modification that I'm doing to make it as similar to the original as I want to add the link in and link out, I have those link ports on another board so it was just a matter of adding some pads, I added them but I don't know how to use Kicad 7 much and I would like someone to review it and see what is wrong.

Greetings!

https://mega.nz/file/aE5FQa7I#KHZKmM_3y ... 8zpheBk-rI

Mod

https://mega.nz/file/7VZ31T5Q#RIv2tGtpl ... X1AQL3OTZA

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