The complete preamplifier (2):

Following the circuit description in our January 1991 issue, we will now focus our attention on the practical construction of the preamplifier. The busboard and the motherboard is shown in this article. The bushoard contains all the components and the SOURCE SELECT and RECORD SELECT switches. These switches are fitted with extension spindles toenable them to be controlled from the front panel. The motherboard contains the components with the exception of the controls, which are fitted on the front panel. By virtue of its double-sided and through plated design, this board will be fairly easy to populate. Most of the work lies in preparing the enclosure and connecting the controls to the motherboard.