Text-to-phoneme conversion is a common problem in speech processing. This can be done using a rule-based system or a neural network. In this paper, we propose a solution to this problem using a modular hybrid system that uses basic rules to subdivide the original problem into easier tasks, which are then solved by dedicated neural networks. Such a solution can be more rapidly constructed, and is easily extendable. A voting committee concept is used to enhance generalization abilities of the system.