Active loudspeakers

ME 901K 3-way-coaxial-compact-loudspeaker with cardioid radiation characteristic in bass range

Shown veneer: zebrawood nature and american cherry stained

ME 901K

The Studio Monitor Speaker ME 901K is an active three-way monitor with cardioids characteristic within the frequency range from 30 Hz through 250 Hz. It can universally be applied as the main monitoring speaker for sound and video studios. By this radiating characteristic the reflections on the back walls of listening rooms can be minimized. The transfer characteristic can be matched to the acoustical conditions of the reproduction room as well as to the set-up situation by a low-frequent infinitely variable adaptation within two adjustable frequency ranges.

The unit for the medium and high-frequency range is combined in a coaxial manner with a long-throw bass system and is provided with a directivity index, which supplements in an excellent way that of the bass system. The total directivity index of the monitor was optimized for larger listening distances. The whole system is superior by excellent localization behaviour. The high-power long-throw bass system is driven in a compact cabinet so that optimum impulse behaviour can be reached. Moreover, with a series of constructional measures we have provided that convincing lowest values of non-linear distortions and colorations could be reached.

The three-channel MOSFET power amplifier with electronic crossover is integrated within the back wall of the cabinet and can be swing out for service purposes. An intermittent LED lighting signals when the overload limit is reached. After crossing of the maximum level the output level will be reduced by 20 dB to avoid any overloading of the components. Various special stands and holding devices can be delivered as accessories.

Technical data

active 3-way loudspeaker for hearing distances between 2 and 4 m

Acoustic characteristics

Maximum SPL from 100 Hz ... 6 kHz

116 ... 122 dB / r = 1 m (3.3 ft)

Bandwidth

25 Hz ... 20 kHz ± 3 dB

Total harmonic distortion measured at 96 dB / r = 1 m (3.3 ft) from 100 Hz ... 10 kHz

≤- 44 dB

Electronic Crossover frequencies

550 Hz and 2.8 kHz

Loudspeaker systems

Woofer

400 mm (16") cone

Mid-range unit

125 mm (5") cone

Tweeter

25 mm (1") dome

Electrical parameters

Nominal Input level

+ 6 dBu adjustable

Nominal output power MOSFET-amplifier

180 Watt / 4 Ohm

100 Watt / 4 Ohm

Input Connector

XLR 3F

Operation and Clipping indicator

LED on front side

Power requirements

Europe 230 Volt (± 10 %), AC, 50 Hz

USA & Canada 115 Volt, AC, 60 Hz

Mains Connection

Euro cold-unit connector

Physical parameters

Temperature requirements

for use

+ 15°C ... + 35°C (59°F ... 95°F)

for storage

- 25°C ... + 45°C (- 13°F ... 113°F)

humidity

45 ... 75 %

Dimensions (H x W x D)

561 x 500 x 441 mm (22.1 x 19.7 x 17.4 in)

Weight

49 kg (107.8 lbs)

Cabinet and options

Design of the Cabinet

corpus

MDF-wood in ash black veneered; optional different veneers or colors

acoustic baffle

MDF-wood in microstructure semi gloss black

holding device

none; optional with holding device

handles

none; optional with handles

Other parameters

Calibration: Acoustic output level / PE = - 14 dBu

89 dB / r = 1 m (3.3 ft)

Directivity index from 200 Hz ... 10 kHz

increasing from 5 to 10 dB

Inherent noise sound level

≤ 7 dB (A) / r = 1 m (3.3 ft)

Input impedance

≥ 10 kOhm RC symmetrically

Power consumption

35 VA at standby

max. 300 VA at full load

Downloads

Pedestal

Integrated cable duct in the pedestal

Height (Top edge loudspeaker): approx. 1200 mm (47.2 in)

Base panel (W x D): 500 mm x 430 mm (19.7 in x 16.9 in)

Pedestal veneered