INTRODUCTION

Thank you for choosing LOUD Technologies’ Mackie active sound reinforcement speakers.

The SRM350v2 is a redesigned version of our popular SRM350 active loudspeaker. With its newly designed Class-D Fast-Recovery amplifiers, high-output compression driver and 10" woofer, it produces an even smoother sound than the original. SRM means Sound Reinforcement Monitor, and the SRM350v2 truly produces a studio quality sound in a sound reinforcement speaker.

Our design goal was to build a sound reinforcement speaker with:

1.High precision, high output, and accurate playback.

2.Very wide, smooth dispersion of mid and high frequencies.

3.Ergonomically correct physical design for easy transport and set up.

Through the combined resources of our top-notch mechanical and analog engineers, and our experienced transducer engineers at EAW, we were able to achieve our design goals in every aspect. The result is a sound reinforcement system equally at home in a concert setting, in the studio, impromptu concerts on the studio roof, in the cinema, or in a home theater.

The Transducers

The SRM350v2 active speakers feature a 10-inch high-power low-frequency woofer, and a 1.4-inch titanium diaphragm high-output compression driver. This high-frequency driver is mounted on an acoustically non-resonant exponential waveguide, providing a wide, controlled dispersion and precise reproduction of the critical upper mid-range and high frequencies. The result is an unbelievably smooth off-axis response that allows everyone in the audience to experience the same high-resolution audio no matter where they are seated.

The Power Amplifiers

To power these beauties, each SRM350v2 includes two of our acclaimed FR Series “Fast Recovery” power amplifiers. In addition, the low-frequency amplifier uses a Class-D design for improved efficiency and cleaner power. Our exclusive designs use low negative feedback, yet allow the amplifiers to maintain low distortion and stability and to quickly recover when driven into clipping.

The amplifiers include the following features:

•The low-frequency amplifier produces 165 continuous watts before clipping.

•The high-frequency amplifier produces 30 continuous watts before clipping.

•When the output from either amplifier begins to clip, a limiter gently reduces the input signal level until the output is no longer clipping.

•The low-frequency amplifier also has a Dynamic Bass Boost circuit. Our ears are more sensitive to bass frequencies at high volume levels than at softer volumes. This unique circuit automatically reduces the low frequencies below 70 Hz as the volume of the speakers goes up. This results in improved efficiency for the low-frequency amplifier because it is not wasting power trying to reproduce frequencies we hear better at loud volumes. Instead, the power is used

for the frequencies where it is needed, resulting in a louder sound.

Warning: Although the amplifiers have these protection circuits, you must still make sure the LIMIT light is not blinking continuously. If it is, turn down your mixer faders, or preamplifier gain, or turn down the SRM350v2 LEVEL control.

The Crossover

The built-in electronic crossover is a 24 dB/octave Linkwitz-Riley design. Although more expensive than other crossover designs, the benefits provided by the Linkwitz- Riley design have been well documented. These benefits include:

•Absolutely flat frequency response throughout the bandpass, without the characteristic ripple near the crossover point exhibited by other designs.

•The sharp 24 dB per octave roll-off of the filters ensures that the transducers aren’t reproducing frequencies outside of their capabilities.

•The acoustic sum of the two driver responses is unity at the crossover frequency, resulting in perfect power response.

•Our heroic engineers have worked carefully to ensure that the SRM350v2 also provides perfect phase response. This diligence has yielded phenomenal accuracy, even if you are standing 20 feet away.

The Cabinet

The SRM350v2 cabinet was designed to be the strongest molded composite cabinet on the planet (Earth). This material is as strong as concrete, and rigid enough to prevent unwanted vibrations in the cabinet. An optional bracket kit is available for the top and bottom of the cabinet to be used for flying, and a socket is provided in the bottom of the cabinet for mounting on a tripod stand. Although it is an exceptional choice for installed sound situations, its light weight and durable finish also make it ideal for portable sound system use. The asymmetrical trapezoidal design of the cabinet makes it easy to use as a floor wedge for stage monitor applications.

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