Maxamillion
Super Member
I've received all the parts for the x-overs: Northcreek and Solen Heptalitz inductors, Mundorf Supreme and Solen caps, Cardas copper litz wire, 5-way binding posts and mounting plate, etc.
After much sketching and thinking, I came up with a design for the x-over cabinet that's the same width as the back of the RSIIb's (8 1/4"), 24" high and 19" deep. That width will allow the cabinet to be placed behind the speakers and look like an extension of them - if I can get the veneers to match. In that position, the x-over cabinet will completely cover all the fuses, speaker jacks, and level controls on the back of the speakers, giving a nice neat appearance. Because of the very large size of some of the components, and the fact that there are 10 inductors, 9 capacitors and several resistors per speaker, I decided to place a partition in the cabinet so that half the components could be mounted on one side and the rest on the other side. This should allow for plenty of room between the big inductors and other components to prevent interference.
Below are pictures of the boxes. They are constructed of 1/2" MDF with 1" square hardwood glue blocks in the corners (which double as stops for the side covers), brass wood screws and urethane glue. The first two pictures are of the boxes without covers, showing the partition in the middle, and the third shows one box with the side cover on. I intentionally left a 1" gap on the sides of the partitions for wiring purposes. I included one of the Northcreek inductors in the pictures for scale (4.3mH, 12 ga.).
Next up is to fill the screw holes, plane and sand everything smooth and veneer the boxes in oak to match the speakers as closely as possible, then wire everything up! It's getting there....
After much sketching and thinking, I came up with a design for the x-over cabinet that's the same width as the back of the RSIIb's (8 1/4"), 24" high and 19" deep. That width will allow the cabinet to be placed behind the speakers and look like an extension of them - if I can get the veneers to match. In that position, the x-over cabinet will completely cover all the fuses, speaker jacks, and level controls on the back of the speakers, giving a nice neat appearance. Because of the very large size of some of the components, and the fact that there are 10 inductors, 9 capacitors and several resistors per speaker, I decided to place a partition in the cabinet so that half the components could be mounted on one side and the rest on the other side. This should allow for plenty of room between the big inductors and other components to prevent interference.
Below are pictures of the boxes. They are constructed of 1/2" MDF with 1" square hardwood glue blocks in the corners (which double as stops for the side covers), brass wood screws and urethane glue. The first two pictures are of the boxes without covers, showing the partition in the middle, and the third shows one box with the side cover on. I intentionally left a 1" gap on the sides of the partitions for wiring purposes. I included one of the Northcreek inductors in the pictures for scale (4.3mH, 12 ga.).
Next up is to fill the screw holes, plane and sand everything smooth and veneer the boxes in oak to match the speakers as closely as possible, then wire everything up! It's getting there....