Synthrotek DLY (Delay) - DIY Build
Delay, echo, reverb and distortion are all common effects for synthesis and in the world of modular synthesis, they make all the difference in the world. Synthrotek have had a long history of effects modules in their lineup and the DLY module is one of their finest.
The DLY is a PT2399 based delay module that can be dialed in to fit the users preferred range of delay due to the independent rate control.
Another rad feature of the module is that unlike the ECHO module by Synthrotek, the DLY has a true wet/dry mix knob, giving the module its unique character and allowing it to be chained within the effects loop. Since fall was upon us, we decided to take on a couple of the companies legendary effects modules for our latest builds.
Before we jump into the build video and all that jazz, let’s revisit an old friend of ours.. the PT2399 IC. You might recall a previous build of the Waveform Magazine PT2399 Delay module, where a karaoke module was converted into a delay module.
The Synthrotek DLY utilizes the same chipset. Aforementioned in the Waveform build, the PT2399 is a CMOS echo/delay processor developed by Princeton Technology Corp. It includes an ADC (Analog to Digital converter), 44Kb of RAM to store the samples and a DAC (Digital to Analog converter).
This chip was created as a simple solution to add delay/reverb/echo to karaokes and set-up entertainment systems. What does this all mean? This means that the chip is a perfect candidate for a delay module and the gang at Synthrotek decided to base a module around it.