Active Nearfield Monitors
The Genelec 8040B is a compact bi-amplified active monitor system with performance comparable to much larger systems. The 8040B takes full advantage of the unconventional design and advanced technologies of Genelec’s 8000 Series loudspeaker range. The all aluminium Minimum Diffraction Enclosure™ (MDE™) and advanced Directivity Control Waveguide™ (DCW™) technologies are carefully matched with advanced amplifier and electronic circuitry and the latest drivers. Bass response has been widened down to 45 Hz (-3 dB) while distortion is substantially lower due to a uniquely new rear reflex port design. The system's excellent directivity characteristics and accurate imaging together with its compact size and flexible mounting options make the 8040B the perfect monitoring tool for a wide range of applications. The 8040B has been specially designed to have a sufficient LF extension for most situations. However if greater SPL's and a lower cutoff frequency are required, it can be complemented with a Genelec subwoofer.
The 8040B is very easy to set up and use, the only connections required are the mains supply and the line level input. The input is made via a balanced female XLR connector. The input sensitivity of the 8040B can be adjusted for easy level matching with other audio equipment. The integrated design allows the amplifiers and the drivers to be calibrated as a single unit, eliminating the effects of component tolerances and ensuring consistent production quality.
The amplifier unit contains an active crossover, a feature more commonly used in large and expensive control room monitors. This is the ideal method for dividing the input signal between the driver units. The active crossover allows the overall response of the system to be optimized to an extent impossible with a passive system. To maintain uniform frequency balance in differing acoustic environments, special calibrated controls are included in the active crossover network. These controls include “treble tilt”, “bass tilt” and “bass roll-off” functions. A new function, “desktop low frequency” control attenuates the bass frequencies around 160 Hz by 4 dB. This feature is designed to compensate for the boost often occurring at this frequency range when the loudspeaker is placed upon a meter bridge, table or a similar reflective horizontal surface.
The bass and treble amplifiers produce 90 W of output power each, with very low THD and IM distortion values. Each amplifier is designed to precisely match the driver it is connected to, thus ensuring the highest subjective sound quality currently possible. The amplifier unit also contains a protection circuit that monitors the output levels and prevents any damage to the drivers. This makes the system immune to overloads and spurious signals.
A 19 mm (3/4") metal dome tweeter is loaded by an advanced DCW™ waveguide, which is integrated into the one piece front baf e. The improved DCW™ provides superior directivity charcteristics and perfect matching between the drivers. The 165 mm (6.5") bass cone driver is mounted in a newly designed bass re ex enclosure. The long, ow optimized re ex tube has a large cross sectional area and terminates with a wide are at the back of the enclosure. Protective grilles are positioned in front of both drivers. Magnetic shielding is standard on the 8040B. Shielding is vital for applications such as video post production, where stray magnetic elds must be minimized.
When the power switch on the back panel of the loudspeaker is set to “ON”, the Intelligent Signal Sensing™ (ISS™) autostart function of the 8040B is active. Automatic powering down to standby mode happens after a certain time when playback has ended. The power consumption in standby mode is typically less than 0.5 watts. The playback will automatically resume once an input signal is detected from the source. There is a slight delay in the automatic pow- ering up. If this is undesirable, the ISS™ function can be disabled by setting the “ISS DISABLE” switch on the back panel to “ON” position. In this mode, the monitor is powered on and off using the power switch on the back panel.
The Minimum Diffraction Enclosure™ (MDE™) Technology increases the performance of the Genelec 8000 Series loudspeakers by minimizing edge diffraction and improving frequency and power response. The edges of the enclosure are rounded and blend seamlessly into the enlarged Directivity Control Waveguide™. Surface discontinuities that cause diffraction are minimized. The curved walls of the die-cast aluminium enclosure are thin but rigid, allowing maximum internal volume while also providing improved EMC shielding and heat dissipation for the amplifiers. Locating the reflex port to the back of the enclosure allows a generously dimensioned reflex port for minimal port noise and excellent bass articulation while freeing the front baffle for an enlarged and optimized DCW™. The advanced DCW™ is designed to match the performance of the drivers in terms of both frequency response and directivity. This results in a smoother overall frequency response on and off axis. In addition, the improved directivity control causes more direct sound and less reflected sound to be received at the listening position, providing improved imaging and reducing the effects of room acoustics. The DCW™ improves the drive unit sensitivity by +2 to +6 dB, thus also increasing the available system maximum sound pressure level.
The 8040B offers several mounting options: The vibration insulating Isolation Positioner/ Decoupler™ (Iso-Pod™) table stand allows tilting the speaker for correct alignment of the acoustic axis. The stand can be attached to three mounting points allowing vertical and symmetrical horizontal positioning. On the rear of the enclosure there are two sets of M6x10 mm threaded holes to accommodate an Omnimount® size 30.0 bracket or a K&M 24180 wall mount. On the base of the enclosure is a M10x10 mm threaded hole which can be used for securing the loudspeaker to its base.
The 8040B is guaranteed for a period of two years against faults in materials or workmanship.
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