Mackie SRM350 V2 Owner's Manual download pdf (Page 4)

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.

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-fre

quency 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amplierproduces165continuous

watts before clipping.

• Thehigh-frequencyamplierproduces30continuous

watts before clipping.

• Whentheoutputfromeitheramplierbeginstoclip,

a limiter gently reduces the input signal level until the

output is no longer clipping.

• Thelow-frequencyamplier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at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lters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ying,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

oorwedgeforstagemonitorapplications.

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Mackie SRM350 V2 Owner's Manual Page 4

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