Emerald Physics history and model progression

Never heard of these. You can usually find measurements of gear online if you search hard enough. This will also give you a good understanding of the actual level of performance. When you say milestones, I’m assuming you’re talking about a flagship product.

Most companies respond well to questions like this. If you’re not sure you could email them.

Audio Science Review is a great place to start...if you want to learn about why measurements matter.

Contact Wally, at Underwood.  https://www.underwoodhifi.com/content/contact     He bought the company from Clayton Shaw (the founder/owner of Spatial Audio Lab).      https://www.youtube.com/watch?v=lYaYCgwmHi8           https://www.spatialaudio.us/contact 

I had EP KCIIs that I paid extra for the factory to upgrade with Clarity Cap and Wire World OCC. While really nice in a much smaller room,  they could not fill my very large room, even with 2 @ 12" SVS powered subs. I replaced them with 3.4s with XO upgrades. These are really amazing, but still need the 2 subs in my room. Now. I have a pair of 2.8s coming which in addition to the same 12" concentric drivers there are 2 @ 15" carbon fiber woofers per cabinet. Hoping they will eliminate the need for the subs.


Both the KCIIs and 3.4s come stock with crap wiring. The 3.4s wiring is inside the 2 sandwiched sections, but, the jumper wire to the external XO is easy to access and needs to be upgraded. I recommend ~ 2ft of wires per connector to get the XO off the speaker base, which vibrates like crazy. I chose WW OCC for this. THE IMPROVEMENT IS NOT SUBTLE

This line has been discontinued, and the factory blew out the remaining inventory at stupid low prices. You can find used pairs at great prices


hth