Korg ARP 2600 availability

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deft_bonz
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Re: Korg ARP 2600 availability

Post by deft_bonz » Wed Oct 07, 2020 8:19 am

What? For real? Didn't know about this. That'd be awesome. Thanks for the hint 😍

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Re: Korg ARP 2600 availability

Post by deft_bonz » Thu Oct 08, 2020 2:58 am

Xmit wrote:
Wed Oct 07, 2020 7:49 am
^
you've still got the Auto Power Off function set to 'ON' maybe ?

you can change this with the DIP switches- see page 21 of the manual
:hail:

Would have never thought of a synth with Auto Power Off, my bad :doh: :hmm:
Skipped the new manual and just read (not even that entirely) the original manual :despair:

I believe it was running though, sequenced thru Metropolis. Testing it now again with Auto Power Off enabled, and running the sequencer for already 2 hours. It might be that only internal electronics are tracked, and not external CV. We'll see in about 2 hours.

Is there a reason why I should not let it be powered on for 4 or more hours?

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Re: Korg ARP 2600 availability

Post by Xmit » Thu Oct 08, 2020 4:32 am

^

hope this sorts it ?

tbh - I think Korg are just being 'green' here - the thing switches off to save energy !

it wasn't a feature on the original!

cheers

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Re: Korg ARP 2600 availability

Post by deft_bonz » Thu Oct 08, 2020 4:47 am

Thanks, hoped for something like this.

Test is still running, 12 minutes until 4 hours passed. The ARP is still on. Tension is rising... :eek:

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Re: Korg ARP 2600 availability

Post by deft_bonz » Thu Oct 08, 2020 6:21 am

Done: I can confirm that the Auto Power Off feature does not react to external CV, at least not for the Gate input.

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Re: Korg ARP 2600 availability

Post by KSS » Thu Oct 08, 2020 7:01 pm

deft_bonz wrote:
Thu Oct 08, 2020 2:58 am
Is there a reason why I should not let it be powered on for 4 or more hours?
No.

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Re: Korg ARP 2600 availability

Post by doombient.music » Fri Oct 09, 2020 1:22 am

Xmit wrote:
Thu Oct 08, 2020 4:32 am
^

hope this sorts it ?

tbh - I think Korg are just being 'green' here - the thing switches off to save energy !

it wasn't a feature on the original!

cheers
In Germany, it is often referred to as The Thunberg Function... to keep little Greta happy.

Stephen

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Re: Korg ARP 2600 availability

Post by deft_bonz » Fri Oct 09, 2020 1:53 am

It's actually a good idea, if you know about it and don't go crazy like me because you think it's a failure in your beloved new synth :doh:

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Re: Korg ARP 2600 availability

Post by Xmit » Fri Oct 09, 2020 4:53 am

In Germany, it is often referred to as The Thunberg Function... to keep little Greta happy.
oh - that's a bit disappointing - I thought the Germans had more sense... that's the sort of crap we have to put up with here in the UK.

I think turning devices off to save electricity is a pretty goog idea & 'little Greta' is pretty much spot on btw, unless a future where you're either on fire or underwater sounds good to you...

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Re: Korg ARP 2600 availability

Post by Licudi » Fri Oct 09, 2020 5:41 am

Xmit wrote:
Fri Oct 09, 2020 4:53 am
'little Greta' is pretty much spot on btw, unless a future where you're either on fire or underwater sounds good to you...
Greta is a child with what many medical practitioners regard as a mental disorder. She's being used by adults who should know better and is certainly not qualified to offer scientific advice. Nor are many musicians.

As for the Karp 2600, it's a simple regulatory matter. Manufacturers are obliged to put an auto-off in their products to comply with EU law.

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Re: Korg ARP 2600 availability

Post by Xmit » Fri Oct 09, 2020 10:17 am

aah. a climate change denier.

I'll bow out at this point then.

cheers

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Re: Korg ARP 2600 availability

Post by Efudd » Fri Oct 09, 2020 10:47 am

Folk,

How noisy is your reverb? If everything else is off/low/bottom/left slider wise, how far up can you turn reverb before you just hear buzzing noise?

It’s especially pronounced with headphones.

With this one if I turn it up at all with good headphones on, there is a lot of cycling and buzzing noise.

Short version: I’m currently holding two 2600s, my original one with a broken taken and a returned that supposedly has had the reverb tank replaced/fixed.

Trying to sanity check how things are supposed to work before I send one of these back.

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Re: Korg ARP 2600 availability

Post by doombient.music » Fri Oct 09, 2020 1:14 pm

Xmit wrote:
Fri Oct 09, 2020 4:53 am
In Germany, it is often referred to as The Thunberg Function... to keep little Greta happy.
oh - that's a bit disappointing - I thought the Germans had more sense... [...]
... of humour?

Well, yes, but certainly not cynical old sods like me.

Stephen

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Re: Korg ARP 2600 availability

Post by Analog Prophet » Sat Oct 10, 2020 5:21 am

Xmit wrote:
Fri Oct 09, 2020 4:53 am
In Germany, it is often referred to as The Thunberg Function... to keep little Greta happy.
oh - that's a bit disappointing - I thought the Germans had more sense... that's the sort of crap we have to put up with here in the UK.

I think turning devices off to save electricity is a pretty goog idea & 'little Greta' is pretty much spot on btw, unless a future where you're either on fire or underwater sounds good to you...
Hurrah for Little Greta (from my city) who is doing a great work for all the synth community as she makes people saving energy to instead be used for better and more important things: To feed more voltage controlled oscillators, more voltage controlled filters, more voltage controlled amplifiers and more hungry analog devices with heavier transformers eating plenty of power to breakfast, lunch and dinner. Auto power off? How dare you? Nae, auto power on!
The best beat of any music
is the beat of your own heart


http://www.analogprophet.com

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Re: Korg ARP 2600 availability

Post by jdkJake » Sat Oct 10, 2020 12:18 pm

Efudd wrote:
Fri Oct 09, 2020 10:47 am
Folk,

How noisy is your reverb? If everything else is off/low/bottom/left slider wise, how far up can you turn reverb before you just hear buzzing noise?

It’s especially pronounced with headphones.

With this one if I turn it up at all with good headphones on, there is a lot of cycling and buzzing noise.

Short version: I’m currently holding two 2600s, my original one with a broken taken and a returned that supposedly has had the reverb tank replaced/fixed.

Trying to sanity check how things are supposed to work before I send one of these back.
The reverb is far from quiet if you enable it even at the lowest of settings. There are far better spring reverb implementations.

That said, it adds a certain character. Not sure I would use it much for recording.

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Re: Korg ARP 2600 availability

Post by KSS » Sat Oct 10, 2020 5:33 pm

@Efudd
It may be possible you're hearing the SM PSU. If the person who did the tank exchange didn't route the tank wiring correctly. That's even a problem with the EI transformer of the OG 2600s.

Can you put a 'frequency' on the noise you're hearing?

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Re: Korg ARP 2600 availability

Post by Licudi » Sat Oct 10, 2020 7:45 pm

Xmit wrote:
Fri Oct 09, 2020 10:17 am
aah. a climate change denier.

I'll bow out at this point then.

cheers
If that's aimed at me then you're mistaken; I've worked with people on all sides of the debate from Sir John Rose to Caroline Lucas. However, when Western society venerates a child who claims she can see carbon dioxide it's not just disappointing, it's dangerous. Like the Age of Reason never happened.

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Re: Korg ARP 2600 availability

Post by luketeaford » Sat Oct 10, 2020 9:13 pm

Licudi wrote:
Sat Oct 10, 2020 7:45 pm
Xmit wrote:
Fri Oct 09, 2020 10:17 am
aah. a climate change denier.

I'll bow out at this point then.

cheers
If that's aimed at me then you're mistaken; I've worked with people on all sides of the debate from Sir John Rose to Caroline Lucas. However, when Western society venerates a child who claims she can see carbon dioxide it's not just disappointing, it's dangerous. Like the Age of Reason never happened.
Please everyone refrain from discussing politics here and keep this post relevant to the 2600 and its auto-off functionality.

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Re: Korg ARP 2600 availability

Post by galanter2 » Sat Oct 10, 2020 11:53 pm

If auto-off can itself be turned off, then I'm not sure there's much to talk about.

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Re: Korg ARP 2600 availability

Post by Dave Peck » Sun Oct 11, 2020 12:29 am

galanter2 wrote:
Sat Oct 10, 2020 11:53 pm
If auto-off can itself be turned off, then I'm not sure there's much to talk about.
But - can it be turned off.....automatically?

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Re: Korg ARP 2600 availability

Post by Efudd » Sun Oct 11, 2020 12:46 am

KSS wrote:
Sat Oct 10, 2020 5:33 pm
@Efudd
It may be possible you're hearing the SM PSU. If the person who did the tank exchange didn't route the tank wiring correctly. That's even a problem with the EI transformer of the OG 2600s.

Can you put a 'frequency' on the noise you're hearing?
@KSS - Not yet -- I'm hoping to get some time in the next day or so to open it up and look. I was thinking similarly but couldn't identify a frequency/pattern when I posted. I have mentally planned to take a look at the work, make a small recording, and potentially run it through the scope for anything my ears can't discern.

as a data point, serial number 7xx was made 4/2020 and serial number 8xx has 7/2020 on it.

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Re: Korg ARP 2600 availability

Post by doombient.music » Sun Oct 11, 2020 5:22 am

Licudi wrote:
Sat Oct 10, 2020 7:45 pm
[...] If that's aimed at me then you're mistaken; I've worked with people on all sides of the debate from Sir John Rose to Caroline Lucas. However, when Western society venerates a child who claims she can see carbon dioxide it's not just disappointing, it's dangerous. Like the Age of Reason never happened.
I give you a big hug for these words of wisdom... at least someone bothered to understand.

Of course, it wasn't aimed at you but at me -- I am no climate-change denier, I am a Greta Thunberg denier, for obvious reasons (or which should be obvious to any thinking person).

That's a huge difference.

Back on topic -- I am fan of hardware I can turn off when I need to turn it off, not when it decides when it's time to be turned off.

Stephen

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Re: Korg ARP 2600 availability

Post by TheDegenerateElite » Sun Oct 11, 2020 9:36 am

There is no real way to mess up the wire routing of the replacement reverb tank because its all tied to the board and posts ans you don't need to undo any of that to unplug the tank.

I do wonder if maybe the plugs were reversed though. That can make a tank sort of work depending on the input/output impedance.

Remember that the accutronics tanks have the color of the jacks switched from the belton tanks, so if you match up red to red and white to white, then you've reversed the in and out. You need to hook them up with the left and right side identical not the colors.


Old tanks often had no color coding and you had to rely on knowing which cables from your preamp and mix were which.

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Re: Korg ARP 2600 availability

Post by Efudd » Sat Oct 17, 2020 8:48 pm

TheDegenerateElite wrote:
Sun Oct 11, 2020 9:36 am
There is no real way to mess up the wire routing of the replacement reverb tank because its all tied to the board and posts ans you don't need to undo any of that to unplug the tank.

I do wonder if maybe the plugs were reversed though. That can make a tank sort of work depending on the input/output impedance.

Remember that the accutronics tanks have the color of the jacks switched from the belton tanks, so if you match up red to red and white to white, then you've reversed the in and out. You need to hook them up with the left and right side identical not the colors.


Old tanks often had no color coding and you had to rely on knowing which cables from your preamp and mix were which.
I finally got around to working on this a few minutes ago. I took a picture of what they had installed and came to this thread to post it, then pack it all up as it was impossibly noisy.

I didn’t really see any wackiness in the routing and could only think to potentially make a shield to mount over the psu.

.... and then I switched the leads. Yup, they had installed the wires reversed. Wow. What a difference lol.

Thank you for that suggestion!

Frankenstein lives with parts from a 7xx and 8xx serial number in reasonable shape now.

As for the tank they used...
752637C5-1C5B-4DAE-BD2E-B238641819DE.jpeg
Completely different sounding device with the reverb functioning. :)
You do not have the required permissions to view the files attached to this post.

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Re: Korg ARP 2600 availability

Post by KSS » Sun Oct 18, 2020 3:29 am

So glad to hear you've arrived past the initial issues! Congrats!

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