Pairing Planar Speakers With A Subwoofer (Eminent Technology)

@bdp24  Good to know, thank you. 
I wonder if @mitch4t ended up buying both the Eminents and the Rythmiks?  What are his thoughts?
The Eminents are notoriously inefficient. Before them I had Polk LSiM705's with sensitivity of 88dB/W/m. Room calibration set them at -7dB (from -12dB to +12dB). The Eminents are rated 84dB/W/ml. So, naturally I assumed that auto calibration will set them at -3dB to create the same sound level, to compensate for low sensitivity. Guess what. It set it at +7dB, a whole 14dB louder! You need a lot of juice to power them, the 75W minimum power rating isn't realistic. I had a 600W@8ohm power amp and it barely did the job. They also took around 6-7 months to break in.

Yup, they like juice. The Maggies are far hungrier, though (I’ve owned four pair, including the Tympani-IVa’s I now have). The ET"s have a nominal impedance of 8 ohms to the Maggies 4 ohms. The LFT panels on their own are an 11 ohm load, so a moderately powered tube amp works great with them. Then a solid state amp can be used for the woofers.

@bdp24 What is amazing about the Eminents is that their midrange driver handles the range of 180Hz to 10kHz without a crossover. The Absolute Sound review is right on target. Such open and transparent speakers. But as ugly as genital warts. Their WAF is negative one million.

They're not too terribly bad with the grills in place, but without them they're about as ugly as speakers get! I'm thinking about taking off the stock cloth, and putting on some real sheer stuff that's acoustically transparent. 

I have paired them with  a pair of Vandersteen 2Wq subwoofers. Superb, seamless and I consider it a 3-in-1 upgrade as the unique feedforward design of the 2Wq's frees up more juice for these power hungry speakers, which benefit also by only having to play from 80hz upward- less juice required. My amps don't work as hard.
My brother walked into the house and commented, without entering my listening room, how effortless my hi-fi sounded.