Need some Amp help - a little new to properly powering speakers

Very few have done wrong by using tubes over transistors. My (now unused) 70watt KT88 tube amp drove my Spendors to deafening levels with serious bass. The Polks being 88dB at 8R should sound great with even a 30w integrated tube amp especially if the OP isn't cranking it.

Amojan,
It was atmasphere who made the positive comment regarding tube amplifiers in his post yesterday. Did you not see this? I personally believe that the key issue here is amplifier "quality " be it tube or transistor. People suggesting just get a more powerful amplifier (quantity) and throwing more watts at the speaker aren't  helping moskaudio (OP).

Moskaudio, I don’t have experience with tube amplifiers in that particular price range. I would look into known reputable brands such as Cayin, Quicksilver and Primaluna on the used market. Those 3 come to mind but I’m sure there are other candidates as well.
1 Regarding tube amplifiers qualify output transformers and power supplies are essential for good sound and performance.
2 Push pull topology with minimum 30 to 35 watts and up (assuming good quality) should work well for you. If you have to exceed the budget a "bit" I’d do it to ensure that the quality of the amplifier is good.
Charles

Although I almost always agree with my esteemed Audiogon friends and colleagues Atmasphere and Charles, and although I am definitely a fan of tube amplification, I would be hesitant to pair a tube amp with these speakers, at least without an in-home trial having return privileges.

While the speaker’s published specs indicate a nominal impedance of 8 ohms, the measurements shown here indicate as follows:

Impedance reaches a minimum of 3.75 ohms at 66 Hz and a phase angle of –47.96 degrees at 83 Hz.

While that information is not nearly as complete as I would have preferred to see (a graph of impedance magnitude and phase angle covering 20 Hz to 20 kHz would have been more informative), it is suggestive that these are probably not tube-friendly speakers, especially when it comes to tube amps in a price range that would make sense. (As opposed, for example, to a vastly more expensive Audio Research Reference series amp, which I suspect would do ok with these speakers).

The problem with the 3.75 ohm figure is not necessarily that value in itself, but rather that given the 8 ohm nominal impedance there is likely to be a wide **variation** in impedance between the bass region and the impedance at higher frequencies. And given also the likelihood that the speaker was designed with the expectation that it would probably be driven with solid state amplification that variation is likely to result in unintended tonal aberrations, such as weak bass, if it is driven via the higher effective output impedance of most tube amps.  And the fairly severe -47.96 degree capacitive phase angle at 83 Hz would most likely add to the problem.

I can also say specifically that based on measurements I’ve seen in Stereophile many PrimaLuna models, especially the lower priced ones, have particularly high output impedances, even for a tube amp, which casts further doubt on their suitability for use with these speakers.

Good luck. Regards,
-- Al

@Almarg even more light shed and more difficulty added to the mix =).

Although, this would make sense. The tweeter and small mid woofer appears to be the same exact design as the LSI25s, which are rated at 4ohms.....most likely due to the woofer being self powered. 

So many fun things to play with =D. Now.....to study up on capacitive phase angles at certain critical sound frequencies.....