Problems with ground (Fuzz tone)

[Alichino1]

Hi,

I'm trying to build a guitar fuzz, and have encountered a problem.
On the schematics several components are connected to ground (the whole bottom-left serves as "virtual" ground). I'm trying to build this project on a breadboard and I have no idea how and where to connect these grounded components, for example R11 or R2.
Can anyone help with this?

Alichino

 

[Harald Kapp]

Ground is the center connection of R12 and R13. This is a virtual ground, since its true potential varies with load (only buffered by C8...C11). If the circuit consumes little power, as I assume, this will be o.k. for that purpose. Connect all ground connections to this point. Since on a breadboard you can't use a ower plane (on a pcb you could), use separate wires for each ground connection and form a star connection at C8...C11)