Eminence pxb board-only crossovers are a lower cost alternative to the ""cabinet ready"" models and are targeted specifically for custom cabinet projects as they do not include the terminal cup, input connectors or L-pad found on the ""cabinet ready"" models, They feature advanced circuit design to both preserve the crossover and your drivers, A benefit of the design is to form a voltage divider across the high frequency driver, The high-pass protection uses custom-built aerospace lamps, The tungsten filaments effectively track the program material, dynamically maintaining a safe maximum current level to the high frequency driver without introducing distortion, This circuitry provides smooth 3:1 analog compression during input overload conditions over 250 watts RMS, At full drive level approaching clipping, the electrical attenuation to the protected high frequency driver is -4, 5 dB, In every way, Eminence pxb crossovers are a technically superior product, For use with 8 ohm drivers, Crossover type: Low pass, board only, Low pass frequency: 250 Hz, 12 dB/octave, Power handling: 600 watts RMS, Made in the U, S, A, SKU: TBALL8482