L-Acoustics MTD Series, Operator'S Manual

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L-ACOUSTICS MTD Manual V1.2 30-11-04 60
8.3 MTD112b SPECIFICATIONS
Frequency Response
Frequency response: 70 – 14k Hz (± 3 dB) (LLC FRONT position)
Usable bandwidth: 55 – 16k Hz (-10 dB)
Sensitivity
(2.83 Vrms at 1 m) 98 dB SPL (70 – 14k Hz)
Power Rating Amplification* Impedance
(Long Term) (recommended) (nominal)
45 Vrms 250 Wrms 1000 Wpeak 500 W 8 ohms
*Amplifiers must have 32 dB gain in order for LLC 112b-st sense return protection to function properly
Nominal Directivity (-6 dB)
Axi-symmetrical 85° (± 20°)
System Output SPL
One enclosure 120.5 dB (cont) 126.5dB (peak) FRONT mode
122.5 dB (cont) 128.5dB (peak) XOVER mode
System output gives the unweighted SPL output of the system referenced to 1 m, including preset equalization
and band levelling adjustment as measured under freefield conditions.
FRONT LLC setting provides a 3 dB low frequency contour under freefield conditions
XOVER LLC setting applies a 100 Hz high pass filter.
Components
LF 1 x 12” weather resistant loudspeaker (4” voice coil)
HF 1 x 1.4” exit compression driver (titanium diaphragm, 3” voice coil, coaxial assembly)
Enclosure
Height 540 mm 21.3 in
Front Width 410 mm 16.1 in
Rear Width 165 mm 6.5 in
Depth 375 mm 14.8 in
Trap Angle 45 degrees with respect to vertical
Net Weight 27.5 kg 60.6 lbs
Shipping Weight 30.5 kg 67.2 lbs
Shipping Dimensions 615 x 470 x 465 mm
24.2 x 18.5 x 18.3 in
Connectors 2x 4-pin Neutrik speakon
Material 18 mm, 30 mm Baltic birch plywood
(sealed, screwed and rabbeted angles)
Finish Maroon-gray™
Grill Black epoxy perforated steel with
acoustically transparent foam
Rigging Integrated flying hardware, handles and pole mount socket,
Omnimount-ready