Srm450 Specifications; 2003 Loud Technologies Inc. All Rights Reserved - Mackie SRM450 User Manual

SRM450 SPECIFICATIONS

System Specifications
Frequency Response (–3 dB)
55 Hz – 18 kHz
Frequency Range (–10 dB)
45 Hz – 20 kHz
Directivity Factor; Q (DI) 9.95 (9.98), averaged
2 kHz to 10 kHz
Max SPL Long-term @ 1m
Max SPL Peak @ 1m
Crossover Linkwitz-Riley,
24 dB/octave @ 1600 Hz
Audio
Input Type Balanced Differential
Input Impedance 20 kohms
Input Protection RFI and level protected
Sensitivity
Line: +4 dBu (center detent)
Mic: –36 dBu
Maximum Input Level +22 dBu
Low-Cut Frequency 75 Hz, Second-order filter
Acoustic Contour Equalization
Peaking: +3 dB @ 100 Hz,
+3 dB @ 12 kHz
± 15 VDC,
Accessory Interface
normalized signal I/O
Operating Temperature Range
–10ºC to 45ºC (14ºF to 113ºF)
Power Amplifiers
Low-Frequency Power Amplifier
Rated Power 300 watts*
Rated THD < 0.1%
Cooling Convection Extrusion
Design Class G, Parametric Servo Feedback
High-Frequency Power Amplifier
Rated Power 100 watts*
Rated THD < 0.1%
Cooling Convection Extrusion
Design Conventional Class AB
*Rated power is continuous rms wattage into transducer's
rated impedance @ 1 kHz for the HF amplifier and @ 100 Hz
for the LF amplifier.
Transducers
Low-Frequency Transducer
Diameter 12 in/300 mm
Voice Coil Diameter 2.5 in/63 mm
Sensitivity (1W@1m) 98 dB
Nominal Impedance 8 ohms
Power Handling 450 watts, program
Frequency Range 45 Hz – 3 kHz
High-Frequency Transducer
Diaphragm Diameter 1.75 in/44.5 mm
Diaphragm Material Titanium
Sensitivity (1W@1m) 106 dB
Nominal Impedance 8 ohms
Power Handling 100 watts, program
Frequency Range 1 kHz – 20 kHz
Horn Design
Type Conical and Exponential
Mouth Size 12 in/304.8 mm (W) x
7 in/177.8 mm (H)
Throat Diameter 1 in/25.4 mm
Horizontal Coverage 90º (1 kHz–20 kHz)
Vertical Coverage 45º (2.8 kHz–20 kHz)
Line Input Power
US
Recommended amperage service
Europe
Recommended amperage service
Japan
Recommended amperage service
AC Connector 3-pin IEC 250 VAC
124 dB
127 dB
Control System Function
Electronic Crossover
Phase Alignment
Equalization
Parametric Equalization
Safety Features
Over-Excursion Protection
Second-Order High-Pass Filter
Thermal Protection
Low-Line Voltage Shut Down
Driver Protection
Low-Freq Roll-Off
Construction Features
Basic Design Asymmetrical Trapezoidal
Enclosure Alignment
Material
Finish
Handles
Mounting Methods
Grille
Display LEDs Signal Present, Peak, Power ON,
Physical Properties
Height 26.0 in/660 mm
Width 15.4 in/390 mm
Depth 14.8 in/376 mm
Weight 51 lb/23.2 kg
Options
PA-A1 forged shoulder eyebolt hardware
(M10 x 1.5 mm x 20 mm)
Disclaimer
Since we are always striving to make our
products better by incorporating new and improved
materials, components, and manufacturing methods,
we reserve the right to change these specifications at
any time without notice.
"Mackie.," the "Running Man" figure, and
"FR Series" are registered trademarks of LOUD
Technologies Inc.
All other brand names mentioned are trade-
marks or registered trademarks of their respective
holders, and are hereby acknowledged.
©2003 LOUD Technologies Inc.
All Rights Reserved.
120 VAC, 60Hz
2.5 amps
230 VAC, 50Hz
1.25 amps
100 VAC, 50/60Hz
3.0 amps
Amplifier shutdown,
auto-reset
60% Nominal line
Independent LF and
HF compressors
Dynamic, signal-level
dependent
Sixth-Order
Polypropylene
Grey, textured finish
One on each side, one on top
Integrated mounting points, M10
Two each located on each side,
top, bottom, and rear of enclosure
Perforated metal with weather-
resistant coating
and Thermal
17