Acoustic B200 and MXR Phase 90 pedal

I have an acoustic b200 and have been playing with it for awhile, clean, with no effects. I have never used any pedals or any other effects with my bass before and I recently bought the MXR phase 90 phase shifter pedal. I played with it at Guitar Center and fell in love with the sound. I plugged it in for the first time on my amp yesterday and did not get the results I was hoping for. I then realized that I had mess with the frequency settings on my amp to get a better sound using the pedal.

Does anyone that's familiar with the B200 have any recommendations for the frequency settings to get the best sound using the Phase 90 pedal with my amp? I also play with a Fender Jazz Bass and the type of music my band plays is kind of indie rock, I don't know if that's important or not.