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The d&b audiotechnik E4 is an 60/400W, compact 2-way coaxial point-source loudspeaker with a 4″ LF driver and 3/4″ HF driver with rotatable horn—black impact resistant finish.
Offering distinct advantages for fixed installation, including smaller cabinets, horizontal or vertical placement, and greater clarity than traditional designs, the point-source E4 is a lightweight 2-way passive loudspeaker using a neodymium LF driver and a coaxially mounted wide dispersion dome tweeter. It offers a wide symmetrical dispersion pattern in the horizontal and vertical plane while the cabinet may be mounted in either attitude. The E4 is intended for mobile near-field applications for speech and music reinforcement in theaters, conferences, industrial presentations, broadcast studios, and as surround sound, delay, and fill systems.
The E4 cabinet is a light-weight 2-way passive loudspeaker using coaxially mounted, wide dispersion dome tweeters. The coaxial design offers a symmetrical dispersion pattern in the horizontal and vertical plane while the cabinets may be mounted in either attitude. The E4 features a 4″ neodymium LF driver in an ultra-compact, sealed enclosure. Its frequency response extends from 130Hz to 20kHz.
The enclosure is injection molded with an impact-resistant black paint finish. The front of the loudspeaker cabinets are protected by a rigid metal grill.
The E4’s rear panel has an M10 threaded insert to accept the Z5356 E4/E5 Ball joint adapter. The cabinet is fitted with a pair of NL4 connectors and a two-pole push terminal block.
The E4 can be used in standalone or supplemented by different subwoofers from the E-Series. Set to CUT, the low-frequency level is reduced, enabling the E4 to be used with d&b active subwoofers.
In HFA mode (High Frequency Attenuation), the HF response of the system is rolled off. HFA provides a natural, balanced frequency response when a unit is placed close to listeners in near field or delay use. High Frequency Attenuation begins gradually at 1kHz, dropping by approximately 3dB at 10kHz. This roll-off mimics the decline in frequency response experienced when listening to a system from a distance in a typically reverberant room or auditorium.
The CPL (Coupling) circuit compensates for coupling effects between the cabinets when building closely coupled arrays. CPL begins gradually around 1 kHz, with the maximum attenuation below 200 Hz. To achieve a balanced frequency response, the CPL circuit can be set to dB attenuation values between 0 and –9. Positive CPL values create an adjustable low frequency boost (0 to +5dB) and can be set when the system is used in full range mode without subwoofers.
The E4’s highly compact sealed enclosure is injection-molded with an impact resistant black paint finish. The loudspeaker cabinet is weather protected and suitable for outdoor use as standard and is also available with a Special Color (SC) option.
Advantage of coaxial speakers for fixed installation
The holy grail of speaker design, coaxial speakers, otherwise known as point-source, offer at least two distinct advantages over traditional designs. Since the high- and low-frequencies emanate from the same point, the speaker delivers full range sound in phase, resulting in a smoother overall frequency response and greater clarity that traditional designs. The second advantage impacts installation. Because there is no physical distance between drivers, the cabinet can be smaller, which allows you to take advantage of limited real estate. Also, thanks to the coaxial design, the cabinet can be oriented horizontally of vertically with no change in performance.
Recommended d&b audiotechnik amplifiers
The d&b D20, 10D and D6 amplifiers are recommended to drive the E4. The d&b D80 and 30D can also be used.
Architectural specifications for detailed project planning
If you require architectural specifications for a d&b system or a specific d&b Series, you can find the most important technical specifications ready for download on the d&b audiotechnik website
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