I decided to make a cabinet for the center (as I figured a cabinet would make up for the gain the left and right had by being in corners, and I was right...we will see how much better they get when they are completely tuned.), and I like the way it turned out so... I will be building a cabinet for the left and right channels too. I am currently waiting to get my amp built, and then I will have Chris A.. tune them for me. Right now I am using a partial tune that was done with them as a open back version. Even the way they are now sounds even better than the open back version did, and it sounded pretty good. I hope to have the amp done early next month followed by 2 more cabinets by the end of August.
Several updates not seen in the pics...
35 degree chamfer on the ports for the woofer size...which gives the angle about 1/8" from the horn to the face of thewoofer side of the pads. I will see if I can dig up a pic of this to make it clearer.
I lined the entire inside of the cabinet with 2 layers of 80 mil of Noiko mat, and then a layer or 150 mil Noiko Red closed cell deadening foam. I used 36sqft of the 80mil to get 2 layers, and then did 1 layer of the 150mil. I am also using the 150mil to seal the removable rear of the cabinet.
I am using a single Speakon 4 connector for the speaker connection, and hockey pucks with felt bottoms for the feet.
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Several updates not seen in the pics...
35 degree chamfer on the ports for the woofer size...which gives the angle about 1/8" from the horn to the face of thewoofer side of the pads. I will see if I can dig up a pic of this to make it clearer.
I lined the entire inside of the cabinet with 2 layers of 80 mil of Noiko mat, and then a layer or 150 mil Noiko Red closed cell deadening foam. I used 36sqft of the 80mil to get 2 layers, and then did 1 layer of the 150mil. I am also using the 150mil to seal the removable rear of the cabinet.
I am using a single Speakon 4 connector for the speaker connection, and hockey pucks with felt bottoms for the feet.
View attachment 862018 View attachment 862020 View attachment 862019
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2nd cabinet was completed today.I will start assembly this next week.
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The centet channel cabinet arrived today. I will start the assembly Monday, and when my casters arrive for my rack, I will arrange the rack for the center channel. Once this is done I will be starting on a square version for my surrounds. Pics of the center are on it's side...the speaker will be installed laying down compared to my first 2 (just like most others install it.)
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I have the front 3 channels up and running now. I am now starting on a smaller pair which are being modeled off of the short side of tne k402. I am using bendable plywood and mdf. This pair will be 2' x2'. I never would have even started this build if it had not been for Cnris on the Klipsch forums. His work on the design and help has allowed me to get a speaker that I could make and sound better than I could buy. Hopefully the smaller version will sound as good, as it will be less expensive and smaller.
Everyone on this forum has been so helpful, and I want to thank everyone for there help as even though I went with the k402 The Synergy style is still what I ended up with and I might never have completed the journey without everyones help.
So far I have the bendable plywood held in place on a spare horn with bendable plywood taped to it. I've calculatedthe angles for the mdf and hope to start cutting the first side soon. I am staggering the woofer mounts (which will be a pert of the horn sides) so I could go with 4 woofers if I want. By going this way I think it will make the horn also race the cabinet.
So far I have the bendable plywood held in place on a spare horn with bendable plywood taped to it. I've calculatedthe angles for the mdf and hope to start cutting the first side soon. I am staggering the woofer mounts (which will be a pert of the horn sides) so I could go with 4 woofers if I want. By going this way I think it will make the horn also race the cabinet.
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It has been a long time, but I have 2 clamp molds made, and a bunch of 1/4" MDF being kerfed for the horn and also for the cabinets. plans have changed a little asI will also be making one wood full size k402 in addition to the mini version which will be a 60x60 synergy horn. in addition I am switching over to the Celestion FTR15-3070E as it digs deeper for the bass and it sounds much cleaner for the mids than the Kappa 15Cs do. I also am looking at getting the big boy Celestion AXi2050 drivers for my front 3 channels. I hope to have some prototypes completed sometime this month.