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I'd check the wiring of the intensity and decay jacks and the soldering on the pads, sound like something could be grounding out in that section.  Hit us up on FB if you want talking through it

Also, Pins 5 and 6 on the rotary have continuity with no resistance, which seems incorrect. The status LED is lit up, dimmer in one position with full brightness in the other, which also seems incorrect.

*Edit*- Ended up switching the LM1458 for a NE5532, and the LED works as expected now, however, I'm still not getting any effect. This has also gotten rid of that short between pins 5 and 6. Gonna take another shot at the audio probe and see where we get.

Post some build pictures. 

The pcb is verified so there must be an error in how you put it together.

The envelope is sensitive to the IC, i'd recommend finding a legit 1458.  Have you checked the send / return is wired correctly.  if it isnt the envelope wont work.  It is also sensitive to the settings.  Make sure that the attack is set less than the decay and that the bandwidth swith is up or down (the envelope wont trigger if it's in the middle position)

Jimi, worth the google.  Was a Pink Floyd weapon of choice back in the day.  A little antiquated by today's standards but was WAY ahead of it's time.  The original looked like an ATM with foot controls.  And built by a drum company!!!  I've long sold my ARP Avatar but this is in that "holy crap...they could do THAT in the dark ages" vein.

The fact that it could be built into an enclosure this size is absolutely mind-blowing.  I think the original had a bazillion diodes just to make it work.

Aren't you confusing the Ludwig with the Synthi hifli, which had two 120 string diode ladders and was very much a pink Floyd thing. 
The Ludwig was used in the sonic youth song the diamond sea.

Putting the finishing touches to the prototype build for our updated Ludwig Phase II design.  I dislike offboard wiring bad enough to drive me to redesign the pcbs with headers for the cross board connections, a few cut outs allow access to the trimmers on the lower boards.  Just waiting for a psu to arrive before i can fire it up.

My problem is I have zero use for the 3d rubbish, it's nice to see the 3d stuff but in the end i can live without it.

I've been using the madbean library and it does 99% of what I need.  To use the 3d stuff there will need to be 3d packages added to all of the components in the library which I'm sure represents a significant amount of work.

Groan

https://knowledge.autodesk.com/support/eagle/troubleshooting/caas/sfdcarticles/sfdcarticles/Autodesk-EAGLE-now-included-with-Fusion-360.html

So Autodesk are getting rid of eagle and merging it with Fusion 360.

I'm not sure what this means in the long term and hopefully I'm worrying over nothing. But I can't help wonder why they don't just leave it alone.

I guess they need to justify the subscription fee somehow 😠😩😠

Dino and I should have some boards for sale soon for the infinite phase, this will include the sample and hold, rate switch and pseudo stereo output, + expression jacks for some of the controls.

This is a dual stackable board with the controls, S&H, CV and LFO on the lower board, and the PSU, audio and phaser on the upper.

Hopefully Dino will get through the verification build soon and we can get them up on the store

https://www.pedalpcb.com/product/duophase/

Here is what you need, the duo phase.


Sent from my iPhone using Tapatalk

Or a Biphase clone

https://www.deadendfx.com/product/lola-phase-defx-v-2-version

With the release of their 22nd album i stumbled on this new band, where have i been. By various names... Oh Sees, The Oh Sees, Thee Oh Sees, OCS...

dave

Hell yeah, the Oh sees rock.

I particularly like the albums Memory of a cut off head and Orc.

Dino and I will pitch in $25 store credit from Deadendfx.

Nicely done indeed

We've added a few new Spaceman boards recently 😉

Tucked away in one corner of my living room, wish i had more space

Get well soon Rej

Hope your are feeling better soon Brian