How do I test the PHOENIX crossover/equalizer circuit board?
A27 – Dave Reite contributed the following method for testing the circuit board. “Once you have your active crossover/equalizers constructed heres a simple testing procedure using a PC based sound card spectrum analyzer. Youll need two each, standard 3.5mm stereo mini plug / two RCA plug cables, and one each double female RCA adapter. Connect one cable to your line out jack and the other to the line in jack on your soundcard. Connect the two white (left) RCAs together with the double female adapter. The red (right) plug from the line out jack goes to the Phoenix crossover input and the red (right) plug from the line in jack goes to the selected crossover output. Download a demo copy of SpectraPlus . This is a 30 day fully working copy of the best soundcard based spectrum analyzer program I have found. Once you have the software installed, set it up as follows: Mode: realtime View: spectrum Options: settings: Sampling format: 16 bit stereo Dual channel options: Real transfer function (r
