SPEAKER

SRM450 Active Speaker System

SRM450

SRM450 Specifications

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 filter

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)

Amplifiers

 

 

 

Total Amplifier 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 amplifier and @ 100 Hz for the LF amplifier

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

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 finish

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

 

Amplifier 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)

2 O F 6 P A G E S

1Measured on-axis in the far field, referenced back to 1 watt rms from maxi- mum power and to 1 meter distance using the inverse square law.

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Mackie manual SRM450 Specifications

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.