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Thread

Wow?

2008-09-25 by Paul Lord

I have a Classic VCO and a WFC, which were built at different times (months apart) and have been racked up in my basement for about 6 months. I set the tuning on them last night before I had audio flowing (coarse tune 9 o'clock, fine at noon on both), and was somewhat shocked at the accuracy. It was closer than my Korg tuner could resolve, I had to go to a strobe!

Given all the net chatter about osc stability for modular oscillators both vintage and modern, I was very impressed :) Is this normal? That is, if you had a Serge PCO and NTO (two different circuits like the WFC and VCO), and set the tuning to the same settings, would you get two tones that were within 1 cent? Or any two oscs in your system? Or am I correct is assuming that what I have witnessed here is superior design and calibration?

Either way, Grant, that's some neat trick! Thanks again for your unparalleled commitment to quality :)

regards,
Paul

Re: Wow?

2008-09-27 by Grant Richter

They were designed to be similar tunings at similar knob pointer settings, for familiarity 
and ease of use.

But smack on tuning is just a fluke. Like landing a thrown quarter on it's edge.

STAYING smack on tune over time and temperature is what is important, they do that 
extremely well, if they do not, tell me and I'll fix it.

Also I have had multiple reports that oscillators tuned 6 months ago are still in tune when 
power up again 6 months latter (after warmup of course).

There was a case where the system had been hit by lightning which completely blew out 
the powers supplies, the VCOs were running on unregulated +/-18.2 volts and they still 
stayed in tune and tracked a keyboard.

I don't recommend that though.

--- In wiardgroup@yahoogroups.com, "Paul Lord" <plord@...> wrote:

Show quoted textHide quoted text

>
> I have a Classic VCO and a WFC, which were built at different times (months
> apart) and have been racked up in my basement for about 6 months.  I set the
> tuning on them last night before I had audio flowing (coarse tune 9 o'clock,
> fine at noon on both), and was somewhat shocked at the accuracy.  It was
> closer than my Korg tuner could resolve, I had to go to a strobe!
> 
> Given all the net chatter about osc stability for modular oscillators both
> vintage and modern, I was very impressed :)  Is this normal?  That is, if
> you had a Serge PCO and NTO (two different circuits like the WFC and VCO),
> and set the tuning to the same settings, would you get two tones that were
> within 1 cent?  Or any two oscs in your system?  Or am I correct is assuming
> that what I have witnessed here is superior design and calibration?
> 
> Either way, Grant, that's some neat trick!  Thanks again for your
> unparalleled commitment to quality :)
> 
> regards,
> Paul
>

Re: [wiardgroup] Wow?

2008-09-27 by watson

what is your wiard doing in the basement for 6 months =P

i am currently waiting on mine to be built. i cant wait.

btw, to stay on topic. no i have no two osc that tune like that, but there are things to keep in mind, pots are a lot less than 100% accurate, plus you have chances of knobs pointers being int he definite same place? so im kinda thinkin that the design is great and you got lucky as hell.

watson

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On Thu, Sep 25, 2008 at 12:37 PM, Paul Lord <plord@there.org>; wrote:

I have a Classic VCO and a WFC, which were built at different times (months apart) and have been racked up in my basement for about 6 months. I set the tuning on them last night before I had audio flowing (coarse tune 9 o'clock, fine at noon on both), and was somewhat shocked at the accuracy. It was closer than my Korg tuner could resolve, I had to go to a strobe!

Given all the net chatter about osc stability for modular oscillators both vintage and modern, I was very impressed :) Is this normal? That is, if you had a Serge PCO and NTO (two different circuits like the WFC and VCO), and set the tuning to the same settings, would you get two tones that were within 1 cent? Or any two oscs in your system? Or am I correct is assuming that what I have witnessed here is superior design and calibration?

Either way, Grant, that's some neat trick! Thanks again for your unparalleled commitment to quality :)

regards,
Paul

Re: [wiardgroup] Re: Wow?

2008-09-28 by sascha victoria

If my EML 101 is in tune when I turn it off the next time I turn it on it will still be in tune after it warms up. Same with my Synthacon.

Wiardgroup

Wow?

Wow?

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Re: [wiardgroup] Re: Wow?

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