SRM450
The Mackie Designs SRM450 is a full range, portable, active loudspeaker system providing high output, wide dispersion, and low distortion performance in a compact, composite molded enclosure. Two amplifiers independent- ly power a high precision 12-inch professional woofer and 1.75-inch diaphragm titanium compression driver with a
1-inch exit throat. A sophisticated electronic control sys- tem provides phase correction, crossover, and five modes of thermal and active system protection.
The SRM450 is fitted with a specially designed horn assembly that combines both an exponential and conical geometry. With the addition of a multi-cell horn throat aperture, the complete assembly provides unparalleled dispersion characteristics. The result is super smooth, low- distortion linear audio performance across the entire spec- ified coverage angle of 90 degrees.
A servo feedback circuit has been added to the low- frequency amplifier in order to provide extended bass response and woofer control. This design provides simul- taneous positive and negative signal feedback information from the woofer’s magnetic circuit to the low-frequency amplifier. This loop locks the two devices together and provides extreme control of the woofer mass. The result is extended linear movement of the woofer cone resulting in very high SPL low-frequency output levels.
Careful attention has been given to the ergonomic fea- tures of the system. The center of gravity, handle loca- tions, handle design, position of fly-points, and ease of use have been carefully thought out. There is also an inte- grated pole mount on the bottom of the cabinet and a weather-resistant steel grille. The asymmetrical trapezoi- dal cabinet has been designed to provide an ideal floor monitoring position.
The SMR450 features a number of unique control fea- tures including a single microphone and line-level control in addition to a high-pass filter for floor monitoring appli- cations, an AC timed turn off function that is ideal for fixed or remote installations, and a contour switch for low-level or background-level sound reinforcement applications.
The SRM450 cabinet is constructed of high pressure injected polypropylene. The enclosure features ample amounts of reinforcement ribbing and structural strength- ening resulting in a strong, super-rigid design providing ideal acoustical characteristics.
SRM450 | SPEAKER |
Active 2-Way Sound |
| Reinforcement Speaker System | |
SRM450
Features
Bi-amplification with 300 watts rms low-frequency and 100 watts rms high-frequency power
127 dB peak SPL
Wide dispersion, studio-quality high-frequency horn with multi-cell aperture throat
Large format exponential/conical high-frequency horn mouth
State of the art RCF Precision 1.75-inch titanium compression driver
Servo feedback controlled RCF Precision
12-inch high-efficiency, light mass woofer Single mic/line level control
High-pass switch for floor monitoring applications
Contour switch provides ideal low to medium level music playback equalization
Timed turn-off AC switch
Complete electronic and component protection circuitry
Electronic equalization and phase alignment Professional trapezoidal enclosure design Built-in pole mount cup on bottom
Tilts on its side for use as a stage monitor Correctly weight-balanced with two comfort- able side handles for easy carrying and set up
Applications
Live and playback applications
Small to medium sized protable PA systems
| Corporate events | 1 O F 6 P A G E S |
| Houses of worship |
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