Demeter - Tremulator

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Re: Demeter - Tremulator

Postby monkeyxx » 25 Oct 2011, 20:11

one more try :scratch:

DEMETER TREMULATOR schematic.gif

DEMETER TREMULATOR adapted from supa trem layout.gif

DEMETER TREMULATOR trace artwork.gif

tremulator2.JPG

tremulator1.JPG
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Re: Demeter - Tremulator

Postby Barcode » 26 Oct 2011, 06:37

My layout is weird?

Anywho, so it was pretty simple to change the full-tone to the demeter, eh? That layout was based heavily on the actual board layout in the Supa-Trem...
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Re: Demeter - Tremulator

Postby monkeyxx » 26 Oct 2011, 07:18

sorry, it was a good layout, it just lacked a few labels to tell what certain solder pads went to, which way to put in the vactrol, and the blend pot was wired in wrong resulting in no tremolo sound. I went nuts though and put all kinds of labeling all over it, I guess I like to do that. thanks for the layout by the way, I used yours over two other options I had
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Re: Demeter - Tremulator

Postby monkeyxx » 26 Oct 2011, 07:20

yeah it was a very straightforward modification... just omit one capacitor (no trace modifications) and go through and trace the rest of the circuit and put in the Demeter values part by part. I was surprised at how many differences there were in part values, given that the sound ends up being quite similar between the two. I like having the volume trim pot from the Fulltone, even though I just leave it on full anyway.
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Re: Demeter - Tremulator

Postby Barcode » 27 Oct 2011, 03:04

monkeyxx wrote:sorry, it was a good layout, it just lacked a few labels to tell what certain solder pads went to, which way to put in the vactrol, and the blend pot was wired in wrong resulting in no tremolo sound. I went nuts though and put all kinds of labeling all over it, I guess I like to do that. thanks for the layout by the way, I used yours over two other options I had

The only thing wrong with the blend pot wiring on the layout is that I didn't note that blend lug 2 also connects as effect output. Otherwise, I've built that layout as is, so I can guarantee you aside from that note that it works as indicated.
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Re: Demeter - Tremulator

Postby monkeyxx » 27 Oct 2011, 03:27

Barcode wrote:
monkeyxx wrote:sorry, it was a good layout, it just lacked a few labels to tell what certain solder pads went to, which way to put in the vactrol, and the blend pot was wired in wrong resulting in no tremolo sound. I went nuts though and put all kinds of labeling all over it, I guess I like to do that. thanks for the layout by the way, I used yours over two other options I had

The only thing wrong with the blend pot wiring on the layout is that I didn't note that blend lug 2 also connects as effect output. Otherwise, I've built that layout as is, so I can guarantee you aside from that note that it works as indicated.


really? I thought 1 and 3 and 2 of that pot at least two were going to the wrong place. maybe it was something else in my build that caused the hiccup when I was also changing that part of the build. if you built it and it worked i guess that speaks for itself
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Re: Demeter - Tremulator

Postby monkeyxx » 19 Nov 2011, 05:54

here's my build... the guts aren't worth seeing. I added the hard/soft switch from the Fulltone, it's pretty subtle, but there is a difference. It's a little smoother than other hard chop tremolo sounds I've heard

COLD STEEL HARD TREMOLO dogs circuit boards 032.JPG
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Re: Demeter - Tremulator

Postby roseblood11 » 19 Nov 2011, 09:36

Can somebody compare Bajamans Trembulator to the original Tremulator? Maybe make a soundsample?
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Re: Demeter - Tremulator

Postby roseblood11 » 30 Nov 2017, 23:58

There's a new version with some useful additions:
http://www.demeteramps.com/index.php?ro ... duct_id=99

I'd really like to see the schematic.
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Re: Demeter - Tremulator

Postby modman » 01 Dec 2017, 12:30

roseblood11 wrote:There's a new version with some useful additions:
http://www.demeteramps.com/index.php?ro ... duct_id=99

I'd really like to see the schematic.

This is a different pedal than the V1, it should get its own thread -- if there is any info
"The whole point of diy is diy. It's not dsoiyathodtr - do some of it yourself and then have others do the rest" (paulc)

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roseblood11 (05 Dec 2017, 00:51)
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