The first thing one notices about the CASABLANCA IV cabinet is its striking design.Characteristics and sound properties
The first thing one notices about the CASABLANCA IV cabinet is its striking design. This cabinet shape, however, has more than just eye-catching qualities, its acoustic qualities have to be heard to be believed.
The speaker consists of a large lower chamber and a top-mounted upper chamber and the two are interconnected through an opening that has been exactly calculated. This is, in fact, a twin-chamber bass reflex cabinet. As a result of the twin-chamber arrangement, it is possible, in comparison with a conventional bass reflex cabinet, to extend the range downwards by a considerable amount. The Helmholtz resonance of the upper chamber is around 90 Hz, that of the lower chamber around 33 Hz.
The woofer in the CASABLANCA IV is the AL 200 8 OHM, which is so popular among connoisseurs of high-end technology. Thanks to its long-stroke woofer, the AL 200 8 OHM helps the CASABLANCA IV achieve unbelievably low-range bass levels and, at the same time, producing remarkable maximum volume levels for a speaker of this size. Another "first" in this model is the two tried-and-tested DSM 50 FFL 8 OHM and DSM 25 FFL 8 OHM titanium dome units, that guarantee transparent, rounded sound qualities across the entire mid- and high-range.
Results: The result is an unusual speaker both as regards its design and its construction principles with excellent low-range bass reproduction coupled with tremendous signal fidelity.
ATLANTIS CLASSIC 200
CONCORDE MK II COUPLET
COUPLET CENTER VIB 130 TL
VIB 170 AL VIB 2000 GF
Although the design of this cabinet may appear at first sight to be complex, it is, in fact, made up of simple, rectangular panels and only the radii and openings need more careful attention. The crossover is mounted on the rear wall behind the bass vent.
When damping this cabinet, remember that the opening between the larger and smaller chambers of the cabinet (diameter 100 mm) must remain free. One bag of damping material is inserted into the upper cabinet. The lower cabinet chamber remains free.
Component parts list for 1 box
The kit includes all necessary components (see list below). Cabinet parts are not included.
Tweeter: DSM 25 FFL 8 Ohm 1 piece
Midrange: DSM 50 FFL 8 Ohm 1 piece
Woofer: AL 200 8 Ohm 1 piece
Crossover: Crossover CASBLANCA IV
Bass reflex tube: BR 15.34 (full length) 2 pieces
Terminal: ST 77 1 piece
Damping material: 1 bag
Wood screws: 4 x 20 mm 14 pieces
Countersunk screws: 3,5 x 25 mm 4 pieces
Cable: 2x 1,5 mm2 3,4 m .................
Parts Size (mm) Quantity
Material: 19 mm MDF or chipboard
Lower top, bottom panel 381 x 350 2
Lower front panel 550 x 350 1
Lower rear panel 512 x 312 1
Lower side panels 512 x 381 2
Front for AL 200 700 x 230 1
Insertion panel 235 x 230 1
Front for DSM 50 FFL 413 x 230 1
Front for DSM 25 FFL 555 x 230 1
Upper Front panel 574 x 230 1
Top panel 181 x 230 1
Upper side panels 181 x 555 2
Upper rear panel 192 x 555 1
Base 50 x 312 2
Base 50 x 324 2