Active Speaker System
SRM450
SPEAKER
SRM450
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Active Speaker System
SRM450
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Active Speaker System
SRM450
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Low Frequency Section
Number of Drivers
1
Woofer Diameter
12 in/300 mm
Voice Coil Diameter
2.5 in/63 mm
Power Handling
450 watts rms (long term)
1
Sensitivity
98 dB (1W@1m)
Frequency Range
45 Hz to 3000 Hz
Magnet Type
Ferrite
Construction Features
Basic Design
Asymmetrical Trapezoidal
Material
Polypropylene
Finish
Grey, textured finish
Handles
Two on sides, one on top
Grille
Perforated metal with weather-
resistant coating
Line Input Power
Power Consumption
320W with musical program
and Peak LED blinking
US
120 VAC, 60Hz
Recommended amperage service
2.5 amps
Europe
230 VAC, 50Hz
Recommended amperage service
1.25 amps
Japan
100 VAC, 50/60Hz
Recommended amperage service
3.0 amps
AC connector
3-pin IEC 250 VAC
Control System Function
Electronic Crossover
Phase Alignment
Equalization
Parametric equalization
Safety Features
Protection
Low Frequency Dynamic Bass
Protection, Independent LF and HF
Compressors, Power Supply and
Amplifier Thermal Protection
Display LEDs
Signal Present, Peak, Power ON, and
Thermal (Cool Down Auto Reset)
Physical
Height
26.0 in/660 mm
Width Front
15.4 in/390 mm
Depth
14.8 in/376 mm
Weight
51.0 lb/23.2 kg
Options
PA-A1 Eyebolt (M10 x 1.5 mm x 20 mm)
SRM450 Specifications
System Acoustic
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 124 dB
Max SPL Peak 127 dB
Crossover Linkwitz-Riley, 24 dB/octave @ 1600 Hz
Audio
Input Bal./unbal. Female XLR
Loop-through (parallel w/input) Bal./unbal. Male XLR
Input Protection RFI and level protected
Level Control Rotating knob (off to +40 dB)
Sensitivity (center detent) Line: +4 dBu
Mic: –36 dBu
Maximum Input Level +22 dBu
Low-Cut Frequency 75 Hz
second-order high-pass filter
Acoustic Contour Equalization (peaking) +3 dB @ 100 Hz
+3 dB @ 12 kHz
Accessory Interface ±15 VDC, normalized signal I/O
Operating Temperature Range –10°C to 45°C
(14°F to 113°F)
Amplifiers
Total Amplifier Power 400 watts continuous*
High Frequency 100 watts*
Type Class AB
Rated THD .03%
Low Frequency 300 watts*
Type Class G with parametric servo feedback
Rated THD 0.03%
*Rated power is continuous rms wattage into transducer’s rated impedance @ 1 kHz for
the HF amplifier and @ 100 Hz for the LF amplifier
High Frequency Section
Diaphragm Size
1.75 in/44.5 mm
Horn Exit Diameter
1.0 in/24.5 mm
Power Handling
100 watts rms (long term)
1
Sensitivity
106 dB (1W@1m)
Frequency Range
1000 Hz to 20 kHz
Nominal Impedance
8 ohms
Diaphragm Material
Damped titanium
Magnet Type
Ferrite
Horn Design
Horizontal Coverage
90° 1 kHz to 20 kHz avg.
Vertical Coverage
45° 2.8 kHz to 20 kHz avg.
Type
Exponential and conical
Mouth Size
12.0 in x 7.0 in/
30.5 cm x 17.8 cm
Throat size
1.0 in/2.5 cm
1
Measured on-axis in the far field, referenced back to 1 watt rms from maxi-
mum power and to 1 meter distance using the inverse square law.
