Clayton Shaw (Spatial Audio) visits Danny Richie (GR Research), with his X4 loudspeaker.

I have the Spatial X5s in my reference system.  They are superb speakers with an expansive, clean/pristine soundscape with nice energy.  I love these speakers.  Do they have a downside?  Well yes, they take forever to break in with the bottom end being the last thing to fill in.  To my ears, over 500 hours.  Nevertheless, the wait was well worth it.

Good points fellas. That's why I use the GR Research/Rythmik Audio Servo-Feedback OB/Dipole Subwoofer with my dipole planar loudspeakers.

By the way, unlike a "normal" sub, the GRR/Rythmik OB Sub may be used up to 300Hz. If you have a planar that will play down that low, mate it with the OB sub for a marriage made-in-Heaven!

The Eminent Technology LFT-8b uses a planar-magnetic midrange driver for frequencies 180Hz to 10kHz (with no cross-over in its passband!), a ribbon tweeter for 10k up. The sealed box 8" woofer has it's own binding posts, so the OB sub may be used in place of the stock woofer. This combo replaced the Infinity RS-1b in my music room.

That was the fly in the ointment for me. Using a 12” driver to reproduce the crucial midrange. As much as I liked many aspects of the speaker, the midrange left me cold. It just never sounded convincing.

Looks nice, probably better as a 3 way then a 2.5 way. I question running a 12” driver up to 1khz but I am just a keyboard warrior lol. 

agree

clayton is a really good guy, knowledgeable but modest, and importantly very responsive and conscientious as a vendor -- like oz, i tried his spatials, but eventually moved on

he should keep better company though... 😆

I had the X3 for about a year. While it did some things very well, the bass was excellent, ultimately I moved on. I think it’s a great speaker and Clayton is a class act.