This is a high end low cost precision product that generates no noise or distortion. The male RCA plug is the output that points toward the amplifier and the female RCA connector accepts the input audio signal up to 15 volts RMS. They are sold in pairs with color rings to indicate the crossover frequency value. The slope or rate of roll off is 12 db/octave. The low pass blocks high frequencies.
MADE IN USA
FinishStyle: Gold Finish
Custom Values: Your choice of custom frequencies with an adder fee.