These response graphs are made with frequency response measurements of the drivers, using a miniDSP UMIK-1 calibrated microphone into REW; along with impedance sweeps of the drivers using a Dayton Audio DATS V3. These measurements are what is required to design the crossover in XSim. These response graphs are generated by XSim.

I did this for the stock crossover, and then for the crossover mods.

Cheap Audio Man video about the Sony SS-CS5 mods

We have completed the design and testing of a series crossover for the SS-CS5. This is included in this v2.0 upgrade manual. If you bought the original version of the manual, but haven’t yet built the crossover, and are interested in the series, email us and we can send you the build information. (See photo)

The series crossover sounds excellent, and should cost about $45-70 less to build. It uses fewer parts, and they are smaller value - so they are also physically smaller. The coils are lower total inductance than just the woofer coil in the parallel design. No energy is shunted to ground, so the speaker is slightly higher sensitivity, and it has a higher minimum impedance.