Features, Applications | Mackie SRM450 instruction

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	SPEAKER
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	1 O F 6 P A G E S
	 Houses of worship

SRM450 specifications

The Mackie SRM450 is a powerful and versatile loudspeaker designed for professionals seeking high-quality sound reinforcement. Known for its robust construction and exceptional audio performance, the SRM450 is a staple in various environments, from concerts and events to installations in venues and churches.

One of the standout features of the SRM450 is its 1000-watt Class D amplifier, which provides plenty of power to drive the speaker to high output levels without distortion. This amplifier is coupled with a high-performance 12-inch woofer and a 1.4-inch titanium dome compression driver, ensuring that the speaker delivers a broad frequency range with clarity and precision. The result is a balanced sound with deep lows, clear mids, and crisp highs, making it suitable for both music and speech applications.

The SRM450 incorporates Mackie’s proprietary Smart Protect DSP technology. This digital signal processing ensures that the speaker operates safely within its limits, preventing overheating and over-driving, which can damage components. Additionally, the speaker offers adjustable EQ settings and a built-in feedback eliminator, which are invaluable tools for live sound engineers.

Portability is another key characteristic of the Mackie SRM450. Weighing in at just around 38 pounds, this speaker is easy to transport and set up, making it ideal for mobile DJs, bands, and event setups. The durable, all-wood cabinet construction enhances sound quality while also contributing to its resilience on the road.

For connectivity, the SRM450 is equipped with a versatile input panel that includes both XLR and 1/4-inch TRS inputs. This allows for easy integration with various audio sources. The built-in mixer with two channels provides additional flexibility, allowing users to connect microphones, instruments, and playback devices directly to the speaker.

Whether used in a small venue or as part of a larger sound system, the Mackie SRM450 stands out for its quality, performance, and reliability. Its thoughtful design and innovative technology make it an excellent choice for sound professionals who demand the best from their equipment. With a reputation for durability and outstanding sound, the SRM450 continues to be a favorite in the pro audio industry, delivering powerful sound and versatility wherever it's needed.