Demeter - Tremulator  [traced]

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monkeyxx
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Post by monkeyxx »

one more try :scratch:
DEMETER TREMULATOR schematic.gif
DEMETER TREMULATOR adapted from supa trem layout.gif
DEMETER TREMULATOR trace artwork.gif
DEMETER TREMULATOR trace artwork.gif (6.25 KiB) Viewed 3743 times
tremulator2.JPG
tremulator1.JPG

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Barcode
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Post by Barcode »

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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monkeyxx
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Post by monkeyxx »

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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monkeyxx
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Post by monkeyxx »

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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Barcode
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Post by Barcode »

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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monkeyxx
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Post by monkeyxx »

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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monkeyxx
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Post by monkeyxx »

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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roseblood11
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Post by roseblood11 »

Can somebody compare Bajamans Trembulator to the original Tremulator? Maybe make a soundsample?

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roseblood11
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Post by roseblood11 »

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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Post by modman »

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
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