The 4S is a lightweight 2-way passive loudspeaker housing a neodymium LF driver and coaxially mounted wide dispersion dome tweeter. It employs a 4” driver in a highly compact sealed enclosure and offers a symmetrical dispersion pattern in the horizontal and vertical plane while the cabinet may be mounted in either attitude. The 4S can be used stand-alone or supplemented by different subwoofers from the xS-Series. The enclosure is injection moulded with an impact and weather resistant (IP34 rating) black or white paint finish. The front of the loudspeaker cabinet is protected by a rigid metal grill backed by an acoustically transparent foam. Incorporated into the rear panel are two M8 threaded inserts, two NL4 connectors and a two pole screw terminal block. The loudspeaker cabinet and most accessories are also available with the Special Colour (SC) option that can be executed in all RAL colours.
The d&b audiotechnik loudspeaker range is designed exclusively for operation with d&b amplifiers. These provide power as well as comprehensive control and protection functions tailored to achieve the performance, reliability and longevity associated with the d&b System approach. The d&b 10D and D6 amplifiers are recommended to drive the 4S. The d&b 30D, D20 and D80 amplifiers can also be used with the appropriate loudspeaker configuration selected.
|Frequency response (–5 dB standard)||130 Hz - 20 kHz|
|Frequency response (–5 dB CUT mode)||180 Hz - 20 kHz|
Max. sound pressure (1m, free field)1
|Cabinets per amplifier channel||4|
|Configuration||Installation specific 2-way compact coaxial loudspeaker|
|Nominal impedance||16 Ω|
|Power handling capacity (RMS/peak 10 ms)||60/400 W|
|Nominal dispersion angle (h x v)||100° conical|
4" driver with neodymium magnet
0.75" dome tweeter coaxially mounted
passive crossover network
2 x NL4
screw terminal block
|Dimensions (H x W x D)||
150 x 120 x 102 mm
5.9 x 4.7 x 4.0"
Application information is presented for guidance only. d&b reserves the right to make any necessary changes to the products and the published specifications. As part of the ongoing development program d&b tries to maintain the highest degree of product compatibility.
The 2-way, passive loudspeaker shall consist of a 4" low frequency driver with a neodymium magnet assembly and a coaxially mounted 0,75" dome tweeter.
The sealed enclosure shall be injection molded with an impact resistant black paint finish.
Special colours according to RAL table shall be available upon request.
The cabinet shall be rated IP34 as a minimum.
The drivers shall be protected by a powder coated metal grill with an acoustically transparent foam.
The cabinet shall incorporate two M8 threaded inserts on the rear panel for the secure attachment of wall mounts.
The connection panel on the back shall be recessed and fitted with two NL4 sockets and a two pole screw terminal block.
A cover plate for protection of the connection panel shall be included.
The loudspeaker shall only be operated by a dedicated, compatible controller amplifier.
The loudspeaker shall have a nominal conical dispersion angle of 100°.
The power handling capacity shall be 60 W RMS and 400 W peak (10 ms).
The frequency response (-5 dB) measured on axis shall be 130 Hz to 20 kHz with a maximum sound pressure of at least 114 dB or 115 dB respectively when operated with one of its dedicated controller amplifiers.
The dimensions shall not exceed 120 x 150 x 102 mm (WxHxD) and shall weigh no more than 1.0 kg (2.2 lb).
The loudspeaker shall be the 4S by d&b audiotechnik GmbH.