d&b M4 Stage Monitor

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 pressure | with 10D: 134 dB / 135 dB
• Max. sound pressure | with D20/30D: 138 dB / 140 dB
• Max. sound pressure | with D40/D80/40D: 138 dB / 140 dB
• Cabinets per amplifier channel (passive mode): 2
• Cabinets per D20/D80 (active mode): 4

Loudspeaker data

• Configuration: 2-way stage monitor
• Nominal impedance: 8 Ω
• Power handling capacity (RMS/peak 10 ms): 400/1600 W
• Nominal dispersion angle (h x v): 50° x 70° rotatable
• Components: 15" driver with neodymium magnetcoaxial; 1.3" exit compression driver with 3" coil and CD horn; passive crossover network
• Connections: 2 x NLT4 F/M; optional 2 x NL4

Dimensions / weight

• Dimensions (H x W x D): 363 x 580 x 505 mm (14.3 x 22.8 x 19.9")
• Weight: 20 kg (44 lb)