#1
Okay, I have found this Leslie simulator circuit, which, while may not be as good as even RT-20 or Univibe, seems simple enough:
http://www.generalguitargadgets.com/index.php?option=content&task=view&id=122&Itemid=140
However, is it possible to replace the light bulb/LDR with something else? (a good LED would also be acceptable).
Ibanez SA-120 (ed.2006)
BluesJr 1996-B + cathode follower + texas Heat
Crate CPB150
Homemade 4 x 10 cab Bass closeback
Metal Muff
#4
Quote by forsaknazrael
There's a Univibe work-a-like build called a Neovibe also, if you're interested.


I want to try a simple circuit first.

Anyway, based on your understanding, is the light bulb/ldr really need? The bulb seems to be just connected to the power supply, and does not vary its intensity... right?
Ibanez SA-120 (ed.2006)
BluesJr 1996-B + cathode follower + texas Heat
Crate CPB150
Homemade 4 x 10 cab Bass closeback
Metal Muff
#5
The light bulb or light source should be used to isolate the input from the rest of the circuit. The bulb's intensity fluctuates according to the input intensity. You could use an LED if you connect a resistor in series with it between the anode and the bridge rectifier +. A 1K resistor probably will be fine.