Generally speaking, a distance of 0.5 m (1.5 ft) from magnetic data carriers (floppy disks, audio and video tapes, bank cards, etc.) is sufficient; a distance of more than 1 m (3 ft) may be necessary with computer and video monitors. M4 Manual (1.8 en) Safety precautions - 1...
Connections The M4 cabinet is fitted with a pair of EP5 connectors. All pins of both connectors are wired in parallel. Using the male connector as the input, the female connector allows for direct connection to additional loudspeakers.
The applicable d&b amplifiers (excluding D6) allow the M4 cabinet to be driven either in "2-Way Active" mode or in passive mode. Operation with D6 Up to a total of two M4 loudspeakers can be passively driven by each D6 amplifier channel. Active operation ("2-Way Active") Selecting "2-Way Active"...
Positive CPL values create an adjustable low frequency boost (0 to +5 dB) and can be set when the M4 is used as a full-range PA speaker. For a single cabinet in free space conditions a value of +3 dB is recommended.
Dispersion characteristics The graphs below show dispersion angle over frequency of an M4 cabinet plotted using lines of equal sound pressure (isobars) at –6 dB and –12 dB. The characteristics refer to monitor operation. When used as a front-of-house system, the horizontal dispersion corresponds to the vertical plot and vice versa.
Manufacturer's declarations EU conformity of loudspeakers (CE symbol) This declaration applies to: M4 loudspeaker Z0800 manufactured by d&b audiotechnik GmbH. All production versions of this type are included, provided they correspond to the original technical version and have not been subject to any later design or electromechanical modifications.
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