Mackie SRM450 Review

Mackie SRM450 User Manual
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Mackie SRM450
​Powered Loudspeaker

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$32.00 (Each) - 2 Day Rental with Flexible Return Date
$6.40 - Get up to 20% back with Spark Rewards*

Recommendation:
Our top end Mackie SRM450 speaker emphasises the meaning of a message coming in loud and clear. This is our top end PA speaker that provides the most power and quality from our line of speakers. Wanting to play music? Keep in mind this speaker only has an XLR input, meaning you'll need to add one of the suggestions below to connect music (unless connecting from another speaker) If you're only looking for speeches, this may be overkill, so consider our economy speakers.

Connect music:
$15 - Economy Mixer
$5 - Bluetooth adapter

Fast Facts:

• 500 Watt Speaker (1000 Watt Peak)
• 12" Woofer
• Low Cut Button: For rolling off low frequencies. This is useful for minimizing stage noise (rumble) and microphone handling noise.
  
• Contour Button: For a crisp sound for live music applications. It is especially useful when listening at lower volumes, as it highlights the bass, in addition to boosting the highs.

Specifications:
Transducer Specifications
Low-Frequency Transducer:

• Diameter: 300mm (12") 
• Voice Coil Diameter: 63.5mm (2.5") 
• Sensitivity: (1W@1m) 98 dB 
• Nominal Impedance: 8 ohms 
• Power Handling: 300 watts 
• Frequency Range: 55Hz - 3000Hz 
  ​Hi-Frequency Driver and Horn:
• Diaphragm Diameter: 44.5mm (1.75") 
• Exit Throat Diameter: 24.5mm (1") 
• Diaphragm Material: Titanium 
• Sensitivity (1W@1m): 106 dB 
• Nominal Impedance: 8 ohms 
• Power Handling: 100 watts 
• Frequency Range: 1000Hz - 20,000Hz 
• Horn Type Composite: Exponential and Conical 
• Mouth Size (W x H): 304.8 x 177.8 mm (12 x 7 in.)
• Horizontal Coverage: 90 degrees (1kHz - 20kHz) 
• Vertical Coverage 45 degrees (2.8kHz - 20kHz) 

​Power Amplifier and System Specifications
​Low-Frequency Power Amplifier:

• Rated Power: 300 watts 
• Rated THD: < 0.03% 
• Cooling Convection: Extrusion 
• Design Class: G, Parametric Servo Feedback 
  High-Frequency Amplifier:
• Rated Power: 100 watts 
• Rated THD: < 0.03% 
• Cooling Convection: Extrusion 
• Design: Conventional Class AB 
  Line Input Power 
• US: 120V, 60Hz 
• Physical Properties
• - Dimensions (H x W x D): 660 x 390 x 376 mm (25.98 x 15.35 x 14.8 in.)
• - Weight: 23.2 kg (51 lbs.) 
• - Enclosure: Geometry Asymmetrical Trapezoidal 
• - Mounting Methods: Integrated mounting points, M10 

System Specifications

• ​Input Type: Balanced Differential 
• Input Impedance Line: 20k ohms 
• Input Protection: RFI and level protected 
• Sensitivity Line: +4 dBu (center detent)
• Mic: -36 dBu Maximum Input Level Line: +22 dBu 
• Low-Cut Frequency: 75Hz, Second-order filter 
• Acoustic Contour Equalization Peaking:
• +3 dB @ 100Hz +3 dB @ 12kHz 
• Enclosure Alignment: Sixth-Order 
• Over-Excursion Protection: Second-Order 
• High-Pass Filter 
• Thermal Protection Amplifier shutdown, auto reset 
• Low-Line Voltage Shut Down 60% Nominal line 
• Acoustic Frequency Response: 55Hz - 20,000Hz 
• Low-Freq: -3 dB Point 55Hz 
• Maximum SPL @ 1m: 127 dB 
• Low-Freq Crossover: 24 dB/octave, time offset corrected 
• High-Freq Crossover: 24 dB/octave 
• Crossover Frequency: 1600Hz
• Driver Protection: Independent LF and HF compressors
• Low-Freq Roll-Off Dynamic-signal level dependent
• Accessory Interface 15V DC, normalized signal I/O
• Operating Temperature Range: -10 degrees to 45 degrees Celsius
• (14 degrees to 113 degrees Fahrenheit)

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