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Acoustical amplifier of type WM-D

     The WM-D acoustic amplifiers are equipped with an Class D amp. The Amplifier has 0dB and +6dB symmetrical inputs, 0dB output, gain control, soprano and bass control, limiter and 6-degree controlling indicator. The input has a Combo type socket, which allows connecting the signal by means of a wire with XLR or Jack plug. Modern construction of WM amplifiers lets them cooperate with other amplifiers and mixer in order to increase the power of the entire amplification installation.

Technical data WM - 400D WM - 600D
Output power (sinus)

400 W

600 W

Output < 2Ω (35V) 2Ω (35V)
Low-pass filtre 40-120Hz 40-120Hz

XLR symmetrical input sensitivity (switchable)

0dB, +6dB 0dB, +6dB

Output sensitivity (XLR symmetrical transformer)

0dB 0dB

Universal input with timbre control: bass, soprano

bass: 100Hz;
sopran: 10kHz ±12dB
bass: 100Hz;
sopran: 10kHz ±12dB
Frequency response 20 - 20000 Hz 20 - 20000 Hz
Limiter yes yes

Constrained cooling (ventilator)

yes yes
Work temperature from -5 to +40 °C from -5 to +40 °C

Measurements width/height/depth (mm)

443x44x250 443x44x250
Weight (kg) 8,5kg 9,4 kg



User manual