The goal of the entertainment center was to elevate the speakers and hide the components and cables. Since none of the Besta doors fit the Besta Jagra bench, I purchased sliding door hardware from Rockler.com and some 1/4" dark gray plexiglass cut to size from eplastics.com. I also purchased a pair of cabinet cooling fans that switch on when the temperature in the entertainment center rises.
The Besta Jagra bench on the left was modified to allow for greater air movement around the components, especially the receiver.
I installed heavy-duty drawer slides to create a sliding shelf for the receiver, which made making the connections to the back of the receiver a lot easier.
The Besta shelf extension in the middle was cut down to the same height as the Jagra benches, and Perfekt Nexus plinths were cut and mounted to the bottom of the entertainment center to hide cables and the metal brackets.
Last but not least, I routed a channel into the back of the Perfekt Nexus rounded deco strips and mounted them to the top of the entertainment center to hide the speaker wires and installed the dioder strip lights to the back of the t.v.
2 IKEA Besta Jagra TV benches
1 Besta shelf unit/extension
Perfekt Nexus plinth
Pefekt Nexus rounded deco strip
Dioder lighting strip