MACKIE SRM 450 V2 400-WATT ACTIVE 2-WAY LIVE SPEAKER WITH ACTIVE ELECTRONIC TIME ALIGNMENT, LIGHT WEIGHT AND CLASS-D AMPLIFICATION

The Mackie SRM450v2 offers studio monitor quality sound in a 12-inch 400-watt active PA speaker.

The Mackie SRM450v2 active PA loudspeaker retains the best of the original Mackie SRM450 design, including Mackie signature Active architecture and rugged durability, but improves the design with ultra-efficient low-weight switching power supplies, a lightweight 12-inch neodymium woofer, an all-new titanium dome compression driver and a high-efficiency 300-watt Class-D Fast Recovery low frequency amplifier. The SRM450v2 packs way more power, clarity and punch than it's predecesor. Wide dispersion, outstanding bass extension and ultra-low distortion mean the Mackie SRM450v2 delivers studio monitor fidelity at full-on PA loudspeaker sound pressure levels. The Mackie SRM450v2 Active loudspeaker combines superior quality with innovative technology to bring ultimate performance and reliability to the legendary Mackie Sound Reinforcement Monitor SRM series.

The Mackie SRM450v2 features a 12-inch high-power low-frequency woofer with a 3-inch voice coil and neodymium magnet driven by 300-watts. A 1.75-inch titanium diaphragm high-output ceramic compression driver mounted on an acoustically non-resonant exponential waveguide provides 90x45-degree controlled dispersion and precise reproduction of the critical mid-range with smooth off-axis responce.

Class D amplifiers, as featured in the low frequency section of the Mackie SRM450v2, operate efficiently, producing more sound output and less heat than comparable Class AB amplifiers. Less head mean less heat sinks, saving weight in the SRM450v2. And because the SRM450v2 amplifiers use switching power supplies, rather than conventional transformers, additional weight is saved in the new SRM450v2. Each amplifier has its own compressor circuit that acts when the input signal is large encough to cause clipping, distortion and excessive voice coil heat. The SRM450v2 employs a built-in limiter for less distortion at peak levels, and an automatic sliding high pass filter on the bass that moves the low cut-off frequency up or down depending on amplifier output, to give that little bit extra low end volume when the crowd demands more.

Most loudspeaker systems mount the high frequency compression driver deep in the enclosure at the end of the horn, causing the high frequencies to arrive at the listener after the lows. This "time smear" distorts the relation of a fundamental tone and it's haromics, mudding the tone, and smearing the stereo image. Mackie has solved this problem in the SRM450v2 with Electronic Time Correction which delays low frequencies electronically so highs and lows arrive at the audience in their proper time relationship. The SRM450v2 stereo image is accurate and the audience hears the proper frequency response of the music.

Based on Mackie's HR824 studio monitor technology, the servo feedback damping electronic circuit within the Mackie SRM450v2 tighens the bass by including the low frequency loudspeakers in the feedback ciruitry of the power amplifiers. The servo circuit "locks" the movement of the woofer in place with the positive and negative feedback of the amplifier in a way that no external amp and passive woofer can ever achieve. This creates a solid direct-coupling that delivers extremely deep bass from a small cabinet.

Ultra-low distortion, outstanding bass extention and wide dispersion mean the Mackie SRM450v2 delivers studio monitor fidelity at sound reinforcement PA system sound pressure levels.

MACKIE SRM450V2 ACTIVE PA LOUDSPEAKER 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.
Frequency Range (-10 dB): 45Hz - 20KHz.
Frequency Response (-3 dB) 55Hz - 18kHz.
Maximum Peak SPL @ 1m: 127dB SPL.
Low-Freq Crossover: 24 dB/octave, time offset corrected.
High-Freq Crossover: 24 dB/octave.
Crossover Frequency: 1.6kHz.
Driver Protection: independent LF and HF compressors.
Low-Freq Roll-Off: dynamic-signal level dependent.

MACKIE SRM450V2 ACTIVE PA LOUDSPEAKER FEATURES

2-way active bi-amplified PA loudspeaker system.
High-output titanium compression driver.
High-power Neodymium long-throw low frequency transducer with 3-inch voice coil.
Molded composite cabinet with built-in fly points for hanging, and a socket in the bottom for mounting on a tripod
stand.
Servo Feedback controlled woofer for tight low-end punch.
300-Watt class-D, Fast Recovery Low Frequency amp
100-Watt Conventional Class AB Hight Frequency amp.
Ultra-wide, smooth dispersion via multi-cell horn aperture and HF waveguide.
Active phase-accurate 24dB Linkwitz-Riley electronic crossover.
Mackie Active Electronic time alignment, phase correction and EQ for studio quality sound.
Mic/line input and pass-thru connector.
Lightweight for ultimate portability (40lbs).
Flyable, Pole Mountable, Floor Wedge-able.
Horizontal Coverage Pattern: 90-degrees up to 20 kHz.
Vertical Coverage Pattern: 45-degrees up to 20 kHz.
Height: 26.0 in/660 mm.
Width: 15.4 in/39 0 mm.
Depth: 14.8 in/376 mm.
Weight: 40 lb/18 kg.