Tag: Eurorack

Division 6 CEM3340 VCO – DIY Build

Division 6 CEM3340 VCO - DIY Build

Completed CEM3340 Front

Summer is in full swing and we were craving some new oscillators to add to our modular rack. This need was fulfilled by Division 6 labs and Synthrotek with the new Division 6 CEM3340 VCO.

This voltage control oscillator is based off the famous Curtis 3340 IC which has been around for quite some time and have been utilized in many legacy synths.  Our build of the Division 6 CEM3340 was a quick and easy build and is recommended for anyone just getting into modular DIY. 

What is the Curtis 3340 IC?

Many synths today utilize chips that mimic the famous Curtis 3340. While this chip is no longer manufactured in mass volume, there is a few places that still sell the chip. What makes this chip so special is it is a self contained, precision voltage controlled oscillator. 

NoteThe chip used in this kit is not an original Curtis 3340 IC, but it’s damn close!  

It features both exponential and linear control scales and up to four buffered output waveforms. ( triangle, sawtooth, square and pulse). They do not require a temperature compensation resistor because they provide their own compensation. Multiple control voltages can be mixed within itself.  


Waveform Magazine Catwalk – DIY Builds

Waveform Magazine Project 4 - Calkwalk - DIY Build

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Catwalk - Project 4 - Arrival

As the latest Waveform Magazine hit both the digital and home mailboxes, we were anxious to see the gang had come up with for their latest DIY module. We had the opportunity to build, review and share all of the previous Waveform Magazine projects in previous months and needless to say our curiosity was struck by the new packaging of Project 3 – The Switchenator.

As you can see in our Switchenator build photos, the header card/packaging of the module listed all 3 of the previous projects (PT2399 Delay, Gateway Oscillator and The Switchenator)… but the card had another listing. What could the Catwalk be? Was the Catwalk the notorious “Project 4”? Could this be a clue to the next module or DIY project this amazing magazine has developed? The simple answer is yes! Ladies and gentlemen, Waveform Magazine has presented us with Project 4 – The Catwalk.

The Catwalk? What the?….


Rat King Modular GATES – DIY Build

Rat King Modular GATES - Eurorack Modular Build

As summer draws near and the hot weather rolls into California, it’s an optimal time to stay inside and catch up on some DIY modular kits.

When we heard that Rat King Modular was releasing a new module named GATES, we immediately hit up our friends at Synthrotek and ordered one up as soon as the kits were available. (The module had been released as a fully assembled version about a month prior and we were anxious to finally get our hands on the kit version).

Within a few days, the kit arrived and it was time to get busy building the Rat King Modular GATES!

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Completed Gates with Bag

Horstronic Cable Tester – DIY Build

Horstronic Cable Tester - DIY Build

As a DIY modular enthusiast, we are always looking for ways to help improve our efficiency when we are building modules. We recently ran into an issue where upon receiving a modular kit, the power cable wasn’t included. Now, this normally wasn’t a big deal, but it was rather annoying.

With that being said, we decided why not just make cables and sell them to our customers… so thats what we did. We knew that taking this on would be a fun endeavor and we needed to ensure that our cables were fully tested to protect modules from shorting. Finally after scouring the internet for a few hours, we came across the Horstronic Cable Tester.

Horstronic Kit Complete

After reading about the Horstronic Cable Tester over on the Muffs forum  we decided to order one up. There was only one problem though; there were none in stock anywhere. Stock notifications were signed up for everywhere so that we could order one up as soon as it arrived, somewhere.

A couple months had pass and then randomly we received an email that our friends over at SynthCube had a couple kits in stock…


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