Synth-DIY Yahoo! Groups Archives

hard sync on NTO, PCO...

2004-12-07 by James R. Coplin

This isn’t an approved mod or anything and I don’t know what problems it may cause. I have *NOT* run it past Rex. I *AM NOT* an electrical engineer or anything so you have been warned.

But, if you hate the soft sync on the osc. as much as I do, here is a potential remedy. If you remove the 22k resistor on the sync input and just strap the connection with a wire, you will get hard sync behavior from the osc. I have done this to my osc and I am happy with it but...

Thought others might be interested.

James R. Coplin

***************

If anyone asks of my whereabouts,

simply tell them i've gone out the window

for a spot of tea and am not

expected back any time soon.

***************

Re: hard sync on NTO, PCO...

2004-12-08 by sasami@hotkey.net.au

From: "James R. Coplin" <moog@...>

>This isn't an approved mod or anything and I don't know what problems it may
>cause. I have *NOT* run it past Rex. I *AM NOT* an electrical engineer or
>anything so you have been warned.
>
>But, if you hate the soft sync on the osc. as much as I do, here is a
>potential remedy. If you remove the 22k resistor on the sync input and just
>strap the connection with a wire, you will get hard sync behavior from the
>osc. I have done this to my osc and I am happy with it but...

Thoughts from someone who does electronics, but hasn't looked at the sync
circuit - using a 220 ohm resistor would be better than a piece of wire. It
will give the internal circuitry some protection, and being 100 times
smaller than the original resistor, will act like a "piece of wire" for all
other intents and purposes.

Ken
_______________________________________________________________________
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: hard sync on NTO, PCO...

2004-12-08 by John P

Does this actually cause the cycle to reset? Have you tried it at LFO
frequencies?

I was hot to trot to have Rex offer a hard sync mod... but then I got my
Nord Micro Modular & played with the hard sync on that. I don't know
what I expected but it was underwhelming.

On the Aries they had a Phase Mod Sync... and there have been some other
hard sync variations over the years that might've been more interesting.

I have used soft sync on occasion... It does a good job of locking
oscillators together so you can build up complex waveforms that don't
phase from being asynchronous.

James R. Coplin wrote:

Show quoted textHide quoted text

> This isn’t an approved mod or anything and I don’t know what problems
> it may cause. I have *NOT* run it past Rex. I *AM NOT* an electrical
> engineer or anything so you have been warned.
>
> But, if you hate the soft sync on the osc. as much as I do, here is a
> potential remedy. If you remove the 22k resistor on the sync input and
> just strap the connection with a wire, you will get hard sync behavior
> from the osc. I have done this to my osc and I am happy with it but...
>
> Thought others might be interested.
>
> James R. Coplin
>
> ***************
>
> If anyone asks of my whereabouts,
>
> simply tell them i've gone out the window
>
> for a spot of tea and am not
>
> expected back any time soon.
>
> ***************
>
>
>
> Keep on Patchin'!
>
>
>
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m/n/m/l
surreal electronic music, sound, noise
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