The Mackie SRM450 is an active PA speaker with 1000W peak power, a 12-inch woofer, and a 1.4-inch titanium compression driver, designed with a composite enclosure, offering features like DSP for system protection and a 2-way electronic crossover. Specifications such as peak SPL (127 dB), frequency response (55Hz–20kHz), and dimensions remain consistent for the model, with power draw varying depending on region (e.g., 1.3 amps for 230V models under max conditions). 
 
Key Specifications 
Power: 1000W peak system power
Woofer: 12" high-output woofer
Compression Driver: 1.4" titanium dome
Frequency Response: 55Hz – 20kHz (-3 dB)
Max SPL: 127 dB peak
Crossover: Precision 2-way electronic crossover
DSP Features: Smart Protect™ for system protection, driver time alignment, phase correction
Inputs: XLR/TRS combo input, stereo RCA inputs
Outputs: Balanced XLR output
Enclosure: High-impact molded composite cabinet
Mounting: Pole-mountable, flyable with integrated mounting points