Summary of Big Kat North D28
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The woodworker's kit portion of this loudspeaker system was shipped in two cartons. Carton #1 contains: (1) instruction package. Cabinet manual response curves the north creek cabinet handbook the north creek wiring guide (2) 3" x 5" flared port tubes assemblies. (150) drinking straws (1) bottle of ...
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This publication is copyright august 1, 2008 by north creek music systems. The cabinet design is the intellectual property of north creek music systems. Sides 4 pieces 3/4" mdf (may be pre-veneered) 10 1/2 x 42 top/bottom 3/4" mdf 10 1/2 x 6 3/4 6 pieces.
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Inner front, inner back 3/4" plywood 6 3/4 x 39 3/4 4 pieces.
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Horizontal shelf brace 3/4" plywood 6 3/4 x 8 1/4 2 pieces ladder braces 3/4" plywood 1 1/4 x 28 1/2 4 pieces 1 1/4 x 6 1/2 16 pieces.
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Lower back cover 3/4" mdf 6 3/4 x 11 2 pieces outside upper back 3/4" mdf 6 3/4 x 28 3/4 2 pieces port cut out:: countersink to be deterimined.
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Fascia 1½" mdf (may be double 3/4", laminated) if laminating, use a hard glue such as titebond. Or solid hardwood 8 1/4 x 42 2 pieces (4 if using 3/4" mdf).
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Plinth and plinth detail 3/4" mdf 12 x 13 3/4 4 pieces (laminated) spike holes are on the outside corners, 1/2" diameter, 1" deep. Spike inserts are installed with a 10 mm hex drive. Four holes to attach to the bottom of the cabinet take #10 - 2" deck screws..
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Fascia detail fascia: material is 1 1/2" mdf, cut 8 1/4 x 42 and rounded over 1" on the front side edges. It is much easier to lay out the driver and screw hole positions before this piece is machined. The woofer screw holes need to be drilled at a slight angle for the screws to bite fully. Cut outs...
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Inner front detail cut outs: scan-speak 15w-4530sc: through diameter 5 3/4" , flared on the inside edge of the cabinet. The flare bit should be a quarter round of 3/8" radius. See below for a detailed drawing. D28 through diameter 3 1/2"..
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Driver cut out close-up top view note that we suggest a "double flare" - the first immediately behind the front edge of the driver, the second as the inner front meets the cabinet. The magnet is quite large and the double flare is required to allow the cone to breath..
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Inner back detail the cut outs are large enough to allow mounting of the crossover boards..
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Lower back cover detail the holes along the edge are sized to accept #6 x 1 5/8" drywall screws. The center holes are 9/32" to accept north creek texas posts. Drill two holes for single wiring or four holes for bi-wiring..
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Shelf brace detail the through hole is 3/4" diameter.
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Cabinet assembly 1) pre-assemble all parts without glue, to view the cabinet inside, bracing structure, and test the fit. 2) mark "front" and "top" directions (and use arrows) on the inside of all panels. Use a large black marker. 3) mark the ladder brace edge and corner distances from the front of ...
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Brace positions this detail is a side-view of the center of the cabinet. The measurement is taken from the front edge of the cabinet, before the fascia is attached..
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Fascia installation the main cabinet and fascia should be finished separately. The fascia should be filled, primed, and painted prior to attachment to the main cabinet. 1) coat the rear of the fascia with a thin layer of aleene's super tacky, and lay it face down on top of a heavy plastic bag, on a ...
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Plinth installation the plinth should be finished separately. The best results are by rounding, filling, and sanding smooth the top edged, then painting black. 1) lay the cabinet on its back, resting on several slats of 3/4" material. 2) position the plinth and drill pilot holes through the bottom o...
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Connecting to the binding posts binding posts fit in the horizontal holes of the rear cover, as follows: on the outside goes the hex-head, ring and stop. On the inside goes the gold-plated star washer and one nut. Tighten to prevent spinning. Next comes the gold-plated crossover connector (described...
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Driver chamber stuffing 1) carefully place the cabinet on its back. Locate the white and blue wires terminated with .110" quick-connects. Extend these wires through the tweeter cut-out. 2) locate the red and black wires terminated with the .250" quick-connects. Extend the red through the upper woofe...
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- . North creek loudspeaker kits can be tuned over about an octave by adjusting the length of straws inside the port tube. The following facilitates port tube removal: 1) add a 2" section of straight tube to the flared port tube assembly. Reserve the rest for later. 2) cut the straws into 5" lengths...
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/ 0 / 0 / 0 / 0 there are two adjustments that can be made to "fine tune" the sound of the loudspeaker system to match the sound of the room and associated equipment. These are as follows: low frequency balance: the extreme low end output of the big kat loudspeaker is controlled by the length of str...
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Po box 1120 old forge ny 13420 www.Northcreekmusic.Com.