Patriot, the PSB's are quite insensitive, and will require a powerful amp in order to open up. They feature a difficult 4 ohm load(dipping even lower in some regions), with a phase angle equally as daunting.
While PSB lists their sensitivity as something like 90 dB/2.83 V, I always argued this. Measurement by Stereophile's John Atkinson confirmed my suspicions. The values he observed were closer to 83 dB/2.83 V. With the aforementioned impedence/phase angle.
I have personally spent a lot of time with these speakers. Coupled with electronics by Sony, Adcom, and Carver. Of the myriad amps I mated to these speakers, I only saw the true beauty of this speaker with the now defunct Carver Lightstar. Everything else, including the behemoth Adcoms never allowed this speaker to come to life.
In those times when I drove these speakers by the Lightstar, it was absolute magic. No, they aren't perfect. No speaker is. They can be a bit bright, and the sound is not the most refined. But, at their price, with the right amplification, you have a wonderful speaker. Dynamic, deep, fast, and open. In fact, at times, I was even awestruck. Build quality is very good, as are their looks/WAF. I would caution you to keep a keen eye on making sure the driver's bolts are tight. Rigorous exercise loosens them up faster than one might expect.
I would suggest that if these speakers are keepers(and they SHOULD be), please look into a Carver Lightstar or Sunfire power amplifier. Otherwise, you are selling yourself, and, especially, these speakers short. I cannot think of an integrated(and I am a huge fan of integrateds) which will do these speakers justice, so I am recommending you rethink your choice in amplification