Small room electrostat/ planar speaker?

You will NOT need a subwoofer with Maggie .7s, based on my experience in a 14x17 room. I have MMGWs in another, larger rooms but use a Martin Logan Dynamo 300 subwoofer with them, which they need. During recent auditioning I was very impressed with the smaller Wharfedale models, which are forgiving in placement based on my listening. And they're nice looking.

I’ll also go with Quad ESL 57s. As long as you pay attention you won’t arc a panel - the sound starts getting "hard" sounding - as any speaker does when you overdrive it - long before damage happens.

Having had 63’s in a small room , then in a larger room, and having a friend who used to own soundlabs in too small a room for them, I would not go with planars in That space. I feel planars really need space to breath.

maybe look into the new Elacs coming out with coincident drivers. 

If you want a pure single diaphragm electrostat, consider Sound Labs with Sallies (or the equivalent) behind them.  Many drive them with low wattage Atmasphere amps and are very happy. PrimaLunas are well-made valve amps. You can always get a larger amp if you need a higher SPL. If it's a small room the new U-4iAs (classic but contemporary look) or M545s (wood covered frames) are a final purchase. If you want the most transparent speakers those are the ones you should consider.  Set up properly they disappear and all you hear is music. They are true full range single driver speakers. As a dealer, I have clients who have had SL in the field for over 10 years without any problems. Unlike the speakers you have now you don't have to turn them up to enjoy them. I bought my first double set of ESL 57s in England used in '77, stacked 57s with JANIS woofers, had 63s, Maggies for a month and returned them, ML are fundamentally flawed, so I've been down the path others are speaking about now. SL never sound loud, the sound just gets larger and more enveloping. Since they are truly custom made the choice of grille cloth, frame wood, metal finish is a finitely large number sure to please your "boss." If you have any other questions send me a PM.

Apogee Stage