D&B M4

Description

The M4 is a 2-way high performance stage monitor employing an integrated 15” LF and 1.3” exit horn loaded HF coaxial driver design that utilizes neodymium magnets. The constant directivity dispersion of 50° x 70° (h x v), which this unique horn provides, delivers an accurately defined coverage area on stage. The M4 can also be operated in 2-Way Active mode. When the cabinet is used in an upright position the M4 serves as a powerful PA loudspeaker with a 70° x 50° dispersion suitable for a variety of applications. For dedicated installation applications the dispersion characteristics of the M4 driver assembly can be rotated in 45° increments. The M4 cabinet is constructed from marine plywood, which incorporates the handles, has an impact resistant paint finish, M10 threaded inserts and a socket to accept loudspeaker stands. The front of the loudspeaker cabinet is protected by a rigid metal grill backed with an acoustically transparent foam. Two runners recessed in the bottom panel protect the cabinet from scratching and prevents movement.

System data

Frequency response (-5 dB standard)55 Hz – 17 kHz1

Max. sound pressure2

with D6/10D

with D20/30D

with D80

134 dB3 / 135 dB4

138 dB3 / 140 dB5

138 dB3 / 140 dB5

Cabinets per amplifier channel (passive mode)2

Cabinets per D20/D80 (active mode)4

Loudspeaker data

Configuration2-way stage monitor

Nominal impedance8 Ω

Power handling capacity (RMS/peak 10 ms)400/1600 W

Nominal dispersion angle (h x v)50° x 70° rotatable

Components15″ driver with neodymium magnet

coaxial 1.3″ exit compression driver with 3″ coil and CD horn

passive crossover network

Connections2 x NLT4 F/M

optional 2 x EP5 or 2 x NL4

Dimensions / weight

Dimensions (H x W x D)363 x 580 x 505 mm6

14.3 x 22.8 x 19.9″ 2

Weight20 kg

44 lb

1 with floor coupling

2 1 m, free field, SPL max peak test signal: pink noise with crest factor 4

3 passive mode

4 active mode (10D only)

5 active mode

6 overall dimensions (projected footprint)