Troels,

I wanted to update you on the latest status of my build.  My first experiment was building a pair of the Revelator 51 a few months ago.  I was very happy with how they turned out, and how they sound.  I’m updating you now with part two.  I completed a pair of your Ellipticor 3  speakers.  I’ve always been a fan of first-order crossovers, and your Ellipticor 3 design really sounds impressive.  I’m currently on the break-in phase, have installed the speakers in the extra room over our garage. This is a combination guest room and extra stuff storage room.  So forgive the mess in some of the photographs.

I built the Ellipticor 3 per your instructions with a few minor changes. The biggest change is I split the cabinets in half, to make them easier to move.  I had a funny feeling that if I built them as a single piece, each cabinet would weigh 125 to 150 pounds.  And since I have to go up a set of stairs to this room over the garage, the weight would be a challenge.  The second change to your design as I used Jotoba (Brazilian Cherry) for the fronts of the speakers.  It is very dense and provides a good surface to mount the drivers.  Plus I like how it looks.

Here in the US, I cannot find Baltic birch plywood thicker than 3/4” (18mm). My solution was to laminate the plywood before I started to make sheets that were thick enough, 27mm.  Construction was a bit of a challenge, because of all of the angled sides of the cabinets.  My lesson learned here is to glue the back, sides and bottom of the cabinet first.  Then when that is complete, glue on the top.  Because the top has joints that are not square, breaking the process into two phases makes the clamping much simpler. 

I’ve been listening to the completed Ellipticor 3 speakers now for a few hours. They are still in their break-in period, but what I’ve been hearing so far is very impressive.  The sound stage depth is very deep.  I positioned the speakers in the room in accordance with Cardas Audio’s recommended guidelines.  I have found this setup gives me the best image depth, and holographic imaging.  The adjustable plate amplifier allows me to set the bottom end in accordance with the room. 

Part three of this project is to build four more pairs of Revelator 51 speakers to create a Dolby Atmos surround setup for music and home theater.  You can see in the attached photographs my progress during the build, and also the additional face plates that I’ve cut for the four addition pairs of Revelator 51s.  I’ve already purchased the additional kits from Janzen Audio, I just need to get back to the workshop and cut the rest of the parts.  This might not happen tomorrow, because we are having a heat wave right now.  My garage workshop is oppressively hot. 

Thanks for a great design, supporting your designs with thorough webpages, and Janzen Audio’s great support.  I would not have been able to make this project happen without your talented designs and detailed support.  Thanks you!