The Morley Tel Ray PWO Power Wah is a wah pedal made by Morley sometime in the 1970s, around 19701. It is a strictly a wah pedal, with no volume or other functions built in1.
What it does
Like other wah pedals, the PWO shapes a frequency peak that you sweep with your foot to create the wah effect. What sets the Morley approach apart is how the pedal reads your foot position: instead of a mechanical potentiometer, it uses a light sensor. On the PWO, that sensor can be moved around inside the pedal, which lets you adjust the range of the wah sweep to taste1.
In a demo video, Ron McCann described the pedal and its origins:
"we have a Morley power wah make some time in the 70s"1
He also noted its single purpose plainly: "this is a strictly a wah pedal"1.
The PWO is a vintage pedal from around 19701. Morley's current wah lineup, such as the Morley 20/20 Power Wah and the Morley Classic Wah, carries on the Power Wah name in modern form.
The light sensor that controls the sweep is adjustable, so a player can move it to change where the wah sweep sits1.
Videos
Ron McCann
Fuzzywallz Mastering
Alexandre Marinho
Sources (1)
- Morley Tel Ray PWO Power Wah '70s, youtube.com, 2017-06-20
