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Old 19th December 2002, 01:24 PM   #11
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alright, submitted for your approval, and reccomended by psychokids.... here's a picture of the simplified version of this circuit.

My question : am i going to lose the vintage tonality of this box by making it by these specs vs. the other?
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Old 19th December 2002, 03:09 PM   #12
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Of course you will lose the vintage "tonality". Don't you know by now that nothing new is ever as good and the old thing it replaces. When things like color of wire insulation affect sound, it is a wonder than anyone bothers to build anything, because nothing is predictable or repeatable.

Of course it doesn't really matter if you lose the original vintage tonality. What matters is how you FEEL about it. If it makes you FEEL good, then it is OK.

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Old 19th December 2002, 03:16 PM   #13
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Default schematic

On a more technical level, one thing that will be different is the "attack" and "release" characteristics, because the characteristics of the lamp and VDR is different than that of the LED and VDR. You just will have to try and fiddle with the other circuit constants, depending how it sounds. But I understand that this is a proven design so it may be OK.

BTW, I would forget about the VDRs and use fets as variable resistances with the gates driven from the oscillator. But that means more fiddling and you may not want to do that.

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Old 19th December 2002, 03:19 PM   #14
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CDS cells react to changes rather slowly compared to FETs. So do incandescent lamps compared to LEDs. That's where some of that "vintage tonality" comes from...

You could use thermisters glued to a resistor...

MR
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Old 19th December 2002, 05:09 PM   #15
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Quote:
Originally posted by MRehorst
CDS cells react to changes rather slowly compared to FETs. So do incandescent lamps compared to LEDs. That's where some of that "vintage tonality" comes from...

You could use thermisters glued to a resistor...

MR
You got a point there, Mark


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