Fmod Inline Audio crossovers

FMODs (Filter MODule) are sold in pairs. The input is the female RCA jack and the output is the male RCA plug. The crossover frequency is fixed and each frequency is color coded. The high pass has a red label and the low pass label is black. The slope is 12db per octave. The input impedance can be 600 to 50K ohms. The output impedance will work with pre-amp or amplifier inputs with impedance range from 10K ohms minimum to 100K ohms. The design frequency is 20K to 50K impedance load. Outside this range there is a slight frequency change. Please refer to the Frequency shift chart.