Keeley
Keeley Mag Echo
Here’s Keeley’s PT2399-based delay that aims to emulate old tape delays. I think it’s the first delay on the blog with built in modulation. It’s laid out with board mounted pots for a 125B enclosure with top mounted jacks. FYI, the trimmer controls the gain of the input stage.
Keeley Magnetic Echo
Original info: “The Mag-Echo pedal simulates tube tape echo sounds by using the delay circuit and a little bit of modulation. Tape echos have long been regarded as a warm and very guitar friendly form of delay. The Mag-Echo achieves similar results by using a touch of Lo-Fi delay, a slightly filtered echo response to … Read more
Keeley 1962/1962X
*Edit 20190915* Now a verified layout of Keeley 1962/1962x. The only difference between them is LED or MOSFET clipping in the feedback loop. So the switch alter between 1962 mode and 1962x mode. Schmidse noticed a couple of errors in the layout, a resistor and a cap across pin 6 and 7 of the op … Read more
Keeley El Rey Dorado
Here’s another Plexi-in-a-box overdrive, this time from the great Robert Keeley. It’s a cascaded opamp design running on a bipolar +/-9v supply. The Power Toggle as it’s known on the original selects between red LEDs or BAT46s for asymmetrical clipping.
