Mxr Carbon Copy Schematic | Limited

The Carbon Copy is designed to run on a standard 9V DC

This article explores the circuit theory behind the M169, dissecting its signal path, power management, and the modification potential that has made it a favorite on workbenches worldwide. To understand the Carbon Copy schematic, one must first understand the component around which the entire circuit is designed. At the center of the board lies the MN3005 integrated circuit. Mxr Carbon Copy Schematic

The MXR Carbon Copy schematic revolves around this chip. The guitar signal enters the BBD, gets discretely sampled and passed down the line, and exits milliseconds later. This physical travel time creates the delay. The Carbon Copy is designed to run on

By filtering out the clock whine, they also filter out the high frequencies of the guitar signal. As the repeats decay, they get darker and darker. In the schematic, you will see specific capacitor and resistor values that determine this cutoff frequency. This is why the Carbon Copy never sounds harsh; the circuit inherently smoothes the edges. A delay with a single repeat is a slapback. A delay with infinite repeats is self-oscillation. The "Regen" (or Feedback) control on the schematic determines how much of the delayed signal is fed back into the input of the BBD. The MXR Carbon Copy schematic revolves around this chip