Product 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.
Amplifiers
The d&b D20 and 30D amplifiers are recommended to drive the M4. The d&b D80, 10D and D6 can also be used. The M4 monitor can be driven in passive mode, requiring one amplifier channel. Alternatively, for increased headroom, the M4 can be driven in 2-Way active mode, using two channels of the D20, D80, 10D or 30D amplifiers.
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
Configuration
2-way stage monitor
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 magnet
coaxial 1.3" exit compression driver with 3" coil and CD horn
passive crossover network
Connections
2 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
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)