Thumbnail Filmstrip of Casablanca MK IV Speaker Kit Images
Visaton Speaker Kit - Casablanca MK IV
Art. No. 5979
Visaton Casablanca MK IV - shown assembled with suggested cabinets, not supplied.
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.
Technical Specifications
Rated power | 120 W |
Maximum power | 180 W |
Nominal impedance Z | 8 Ohm |
Frequency response | 25-30000 Hz |
Mean sound pressure level | 84 dB (1W/1m) |
Cut-off frequency | 700 / 6500 Hz |
Principle of Housing | Double Chamber Bassreflex |
Net volume | 70 litres |
Outer dimension height | 1174 mm |
Outer dimension width | 350 mm |
Outer dimension depth | 400 mm |
Frequency and Impedance Response
Frequency Response and Impedance Graph
Exploded Cabinet Drawing
Exploded Speaker Box Drawing
Assembly
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.
Internal Damping
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 Each Box - Supplied with Kit
The kit comes with all necessary components (see list below for one box), one set if the speaker is an each, or two sets for a pair, see price above for details.
Tweeter | DSM 25 FFL - 8 Ohm | 1 pc. |
Midrange driver | DSM 50 FFL - 8 Ohm | 1 pc. |
Woofer | AL200 - 8 Ohm | 1 pc. |
Crossover | Casablanca IV | 1 pc. |
Bass reflex tube | BR 15.34 (full length) | 2 pcs. |
Terminal | ST 77 | 1 pc. |
Damping material | Polyester wool | 1 bags |
Wood screws | 4 x 20 mm | 14 pcs. |
Countersunk screws | 3.5 x 25 mm | 4 pcs. |
Cable | 2 x 1.5 mm² | 3.4 m |
Speaker Cabinet Material List to Make 1 Box - Not Supplied with Kit
Parts for One Box (not supplied) | Size (mm) | Quantity |
Material: 19 mm chipboard or MDF recommended | ||
Lower top and 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 panel for AL 200 | 700 x 230 | 1 |
Insertion panel | 235 x 230 | 1 |
Front panel for DSM 50 FFL | 413 x 230 | 1 |
Front panel 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 |
Speaker Cabinet Dimensions
Loudspeaker Box Construction Diagram - all dimensions in mm.
Crossover - Supplied with Kit Already Assembled
Speaker Kit Crossover Circuit