Pairing Planar Speakers With A Subwoofer (Eminent Technology)

Here is another video of the LFT-8b and F25

@bdp24 Yes, that is a Yorkie.
Regarding the positioning of the speakers. There is a panoramic picture in that link, it shows a sofa with a pillow on it. That is the listening position. As you can see there isnt much space to give the Eminents. They need 3-5 feet behind them and the listening position should have at least that from the back. I guess I should have placed the speakers on the left. Then there would have been plenty of space behind them and also behind me. But when I tried that the sound became muddy, but with excellent depth and imaging. I prefer resolution and details, so I left them almost against the wall.
About the sub placement. I am afraid the speed of the sub or lack of thereof cannot be improved by positioning. Yes, it may become less muddy, but it still will have a heavy woofer that is slow to respond. It will swallow some bass notes. It is all about engineering. A slow sub will create a loud boom. A faster and more resolving sub will create different notes, you will be able to her a pluck of bass guitar or even several guitars just from the sub alone, the attack and decay are clearly heard. Even a better sub with a light driver will create more details, you will hear your midrange (violins, trumpets and voices) with more body, more space, more palpable. It will not be earth shattering, but that is precisely the point.
I m afraid if a sub cant reproduce bass correctly it doesnt matter where you placed it. This video explains how a subwoofer should be used in an audiophile setup.
https://www.youtube.com/watch?v=5YvlxKb1fp4

@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.