The Morley EVO-1; one of the holy grails of stupid, antiquated pedal-collecting. It’s a monster-sized beast that accomplished one tiny effect. It has… a really, really short echo. But when it came out, how fucking novel! In a world before BBD chips, in a time of oil… this is the oil can echo.
This was a broken EVO-1 that I picked up online. The base was rotten and the echo did not echo. I fixed it all up and did meticulous work photographing everything. And then my computer crashed. This was in 2014. So, it’s been awhile. In lieu of the gigantic photo essay I had planned, I’m gonna take my time and retrace my steps. If you want to know more about oil-can audio technology now, see my previous article on the Morley RWV Rotating Wah I refurbished. If you want to see a simple way to mod the circuit board to make an EVO-1 more powerful, for the 2-6 people who actually own one that works, read on!
So you think you’re analog, eh? You always use physical faders for your volume swells, you only record to tape, and you have that nifty vibrato guitar pedal with a BBD IC chip. I call bullshit. That’s not analog enough! An IC chip? Well, domo arigato, Mr. Roboto, but no arigato. If you want that pedal to be even more analog, you need to send your guitar signal through an aluminum disc covered in oil to rubber pickups. WTF? Here’s one of the biggest stomp boxes you’re likely to ever see, the Tel-Ray Morley RWV Rotating Wah.
Raymond Lubow invented the oil can echo in the 1960s for his company, Tel-Ray Electronics, to be a more reliable device than the tape-based echoes of the time. Smaller than a tape echo, it was also able to be added by amplifier manufacturers to their products. It uses an aluminum disc rotating in an electrostatic oil which brushes against conductive rubber pickups to carry the sound. Raymond used the same technology to create the Morley rotating speaker simulator and shove it into a pedal. The name was a pun on the Leslie (less-lee) rotating cabinet speaker. Thus a company was born and we all got ever-so confused. Now imagine you have a broken one. Fuck.