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Mackie SRM450v2 * PAIR * of Active (powered) PA loudspeakers *PAIR* Bk-used, excellent condition

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$197.02 (Fixed shipping cost)

Product Description

PAIR, Black. Barely used, Excellent Condition: These two SRM450v2s in black are in excellent condition with little to no signs of use. They were on display in our store and therefor may have suffered a light scratch or other cosmetic ding but the grill and rest of the cabinet are unblemished and they are in perfect working order.

We happen to have several used carrying bags made by QSC (condition varies, but most are in average condition) and we will throw in a pair of these carrying bags for free.

Shipping is listed separately for this item. Please keep in mind that the shipping cost is for shipping two powered cabinets. Shipping charges are for the contiguous USA and may be less for close addresses, such as California and Arizona. Free pickup available in Vista, CA. 


The Mackie SRM450v2 is a full-range, portable, powered loudspeaker system providing high-output, ultra-wide dispersion and low-distortion performance in a compact, lightweight design. Two Fast RecoveryTM ampli ers independently power a 12-inch lightweight woofer and a precision titanium compression driver. Mackie’s sophisticated Active electronics provide phase correction, crossover, time correction, equalization and protection circuitry.

A heat-treated titanium compression driver with multi-cell aperture directs pristine highs through an exponential high- frequency waveguide, allowing for ultra-wide dispersion. This allows the SRM450v2 to deliver clear, smooth sound to audience members up to 45° off axis.

The 12-inch lightweight woofer provides a greater magnetic eld with far less material, making the woofer extremely lightweight without sacri cing performance. The 3-inch voice coil allows the driver to run cooler, delivering consistent performance even after long hours of use.

Mackie-designed Active electronics provide equalization, crossover, time alignment, and phase correction to enhance sonic performance. Protective circuitry includes over-excursion protection, low-line voltage shut-down, thermal protection, level dependent low-frequency roll-off and independent LF and HF limiters.

The SRM450v2 features a number of dedicated controls including a mic/line switch, a single microphone and line input level control, and a contour switch for low-level sound reinforcement applications. There is also a timed turnoff feature that turns off the ampli ers if the signal drops below –45 dBu for three minutes.

The center of gravity, handle locations, handle design, position of y-points and ease of use have been ergonomically designed. There is also an integrated pole mount cup and a weather- resistant steel grille. The asymmetrical trapezoidal cabinet has been designed to provide an ideal oor monitoring position.

The cabinet is constructed of high-pressure injected polypropylene. The enclosure features ample amounts of reinforcement ribbing and structural strengthening resulting in a strong, super-rigid design providing ideal acoustical characteristics.


Small to mid-size club/band PA systems, houses of worship, DJs, vocal/band monitor wedges, gymnasiums, banquet halls, conference rooms and many, many more.


■ 2-way bi-ampli ed, optimized powered loudspeaker system

■ 300W RMS Class-D, Fast RecoveryTM LF amp / 100W RMS HF amp

■ 12" lightweight long-throw low-frequency transducer with 3" voice coil and servo feedback control

■ High-output precision titanium compression driver ■ Ultra-wide, smooth dispersion via multi-cell horn

aperture and HF waveguide

■ Mackie Active electronic time alignment, phase correction and EQ for studio quality sound

■ Built-in phase-accurate 24 dB Linkwitz-Riley electronic crossover

■ Mic/line input and pass-thru connector

■ Lightweight for ultimate portability (40 lb / 18.1 kg)

■ Asymmetrical trapezoidal cabinet for oor monitor positioning

■ Stand / Pole-mountable

■ Flyable via ten M10 rigging points using the optional eyebolt kit



Acoustic Performance

Frequency Response (–3 dB) Frequency Range (–10 dB) Directivity Factor; Q (DI)


Line Input Power

AC Connector Power Consumption

Control System Function



100 - 120 VAC, 50 - 60 Hz 200 - 240 VAC, 50 - 60 Hz 3-pin IEC 250 VAC 300 watts

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55 Hz - 18 kHz

45 Hz - 20 kHz

9.95 (9.98), averaged 2 kHz to 10 kHz

124 dB @ 1 m

127 dB @ 1 m Linkwitz-Riley, 24 dB/octave @ 1600 Hz

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Max SPL long-term Max SPL peak Crossover Point

Input / Output

Input / Thru Type Input Impedance Input Protection


Maximum Input Level
Low-Cut Frequency
Acoustic Contour Equalization (Peaking)

Low-Frequency Power Ampli er

Electronic Crossover, Phase Alignment, Equalization, Parametric EQ

Safety Features

Over-Excursion Protection Thermal Protection Low-Line Voltage Shut Down

Driver Protection Low-Freq Roll-Off

Construction Features

Basic Design
Enclosure Alignment
Material Polypropylene

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Balanced Differential 20 k

RFI and level protected

+4 dBu (center detent) –36 dBu +22 dBu 75 Hz, Second-order lter +3 dB @ 100 Hz,

+3 dB @ 12 kHz

Second-Order High-Pass Filter Ampli er shutdown, auto-reset 60% Nominal line Independent LF and HF compressors Dynamic, signal-level dependent

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Asymmetrical Trapezoidal Sixth-Order

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Rated Power Rated THD Cooling Design

300 watts rms* < 0.1% Convection Extrusion Class D, Parametric Servo Feedback

Black, textured nish One on each side, one on top Perforated metal with weather-resistant coating Signal Present, Peak, Power ON, and Thermal –10oC - 45oC

Display LEDs Operating Temperature

Physical Properties (packaged product)

Shipping Weight

Physical Properties (product)

Height Width Depth
Net Weight

Mounting Methods

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High-Frequency Power Ampli er

Rated Power

Rated THD



100 watts rms* < 0.1% Convection Extrusion Conventional Class AB

14oF - 113oF

26.5 in / 673 mm 16.8 in / 427 mm 15.5 in / 394 mm

46.0 lb / 20.9 kg

26.1 in / 663 mm 16.0 in / 406 mm 14.8 in / 376 mm

40.0 lb / 18.1 kg

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*Rated power is continuous rms wattage into transducer’s

rated impedance @ 5kHz for the HF ampli er and @ 500Hz for the LF ampli er.

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Low-Frequency Transducer

Voice Coil Diameter

High-Frequency Transducer

Diaphragm Diameter Diaphragm Material

Horn Design

Mouth Size
Throat Diameter Horizontal Coverage Vertical Coverage

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12 in / 305 mm 3 in / 76 mm

1.75 in / 44 mm Heat treated titanium

Conical and Exponential 12 in / 305 mm (W) x 7 in / 178 mm (H) 1 in / 25 mm 90o (1 kHz - 20 kHz) 45o (2.8 kHz - 20 kHz)

Floor mount, pole mount, or y via 10 integrated M10 threaded inserts (two each located on each side, top, bottom and rear of enclosure) 

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