Active Speaker System
SRM450
SPEAKER
SRM450
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Active Speaker System
SRM450
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O F 6 P A G E S
Active Speaker System
SRM450
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O F 6 P A G E S
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 nish
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
Amplier 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 Specications
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 lter
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)
Ampliers
Total Amplier 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 amplier and @ 100 Hz for the LF amplier
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 eld, referenced back to 1 watt rms from maxi-
mum power and to 1 meter distance using the inverse square law.
