#206

I know it’s been stated that there’s no temperature compensation for frequency in the design. Others in the thread have mentioned this was very apparent when trying to calibrate their module, which was also the case when I calibrate the two I had (i.e. just touching the PCB can cause the pitch to drift significantly). I’d imagine that the heat within you case probably changes a fair amount after being on for 90 minutes, and what kind of case you have probably affects the internal temperature.

Not to say it’s normal, but there’s precedent for the frequency to change over time.

1 Like
#207

Okay, I guess that might just be the root of the problem. After running for about two hours, the frequency got relatively stable. There are still some deviations in both directions, but no longer that continuous drifting upwards. Actually the frequency started drifting back downwards after leaving my windows open for a while, causing the room temperature sink a couple degrees.

So yes, seems as if the module is very sensitive to changes in temperature.

My Euroroack case still has a lot of free space, which I guess leads to even more unwanted air circulation. So I guesss the only solution is buying more modules until both rows are completely closed :sweat_smile:

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#208

Yeah an open case will definitely make it worse! But remember, blind panels are cheaper than modules :wink:

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#209

Just checking, are you monitoring the Low out? Only Low is calibrated for v/8 :slight_smile:

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#210

Yes, I’m using the low out. With 0V into V/oct (actual zero-voltage, not just without cable) I’m getting 88hz, with 2V it’s 341hz, which makes a deviation of 11hz.

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#211

I was thinking about giving calibration a try, but if it’s a bit tricky I’ll maybe leave things as they are.

Since I’m mostly doing drones with static pitch (or alternating between two, maybe three pitches) at the moment, and I’m using Teletype for sequencing, it’s probably easier to use something like CV 1 ADD JI x y VV z and then adjust z by hand.

Tuning Three Sisters with it’s frequency knob can be tricky anyways, so usually I use the FM input (with very low attenuation) for fine tuning.

#212

thought i’d revive some energy into the thread w this simple yet affective 6Sis patch. for all you insect lovers out there

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29 Likes
#213

a living and breathing ecosystem

-crickets & frogs @ the mannequins pond

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#214

Great now I need another Three Sisters!

#215

The first Three Sisters here is basically just self-oscillating aka acting as a ~sine wave VCO (almost slow enough to be a LFO, from the looks of it), yes? So if I don’t have a second Three Sisters I could just use any VCO?

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#216

Looks like the output is being taken from the ALL output, with span close to where the filters cutoff frequency overlaps, so it would actually more like 3 LFOs in a cluster into the QUALITY input.

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#217

You can get fairly close to that with a JF into 3Sis. Slightly different but gets you into the ballpark.

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#218

mixing 3 outputs of Instruo Ochd also works quite well :slight_smile:

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#219

LP makes extremely good kick/ drum/ membrane type sounds. i like using it as a voice so much that I want a second to use as a filter

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#220

Does anyone know when these will be back in stock? I know all the supply chains are messed up right now, just wondering. Website still says “back in Spring”.

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#221

How’s this going? Strong interest in complex osc zones and currently sitting at 2 x mangroves, 2 x sisters, and CM… the dual mangroves I end up love love loving when I accidentally wiggle one out of the stream entirely and am only hearing one mangrove D:

#222

There’s one available on reverb right now for $600 :flushed:: https://reverb.com/item/33896813-mannequins-three-sisters

#223

Yeah, I saw that. Boo!

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#224

That’s ridiculous! I hope nobody shells out that much :angry:

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#225

I saw somebody trying to sell one for 650 on reverb too, I find that type of gouging extremely distasteful

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