Introduction, The transducers, The cabinet – MACKIE MR5 User Manual

Page 4: Power amplifiers, Investments in excellence, What are they? the advantages

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MR5

MR5

INTRODUCTION

• The connecting wires between the amplifier outputs

and the drivers are kept to an absolute minimum,
so the damping factor of the amplifier isn’t compro-
mised by the resistance of long speaker cables.

• The acoustic sum of the outputs from the two driv-

ers are optimized electronically, as well as physi-
cally, so the amplitude response is unity and the
phase difference is minimal.

In short, all the complex interconnected components

in the system are designed to work in harmony with
each other to produce the best possible sound.

The Transducers...

The MR5s feature a 5.25-inch high-precision, low-dis-

tortion woofer and a 1-inch high-resolution tweeter.

The high-frequency driver is mounted on a molded

baffle/waveguide, which reduces diffraction and results
in wide, controlled dispersion of high-frequency sounds.
This widens the “sweet spot” and improves the time
domain characteristics of the system.

The Cabinet...

The cabinet is made of MDF with a matte-black finish.

Internal bracing increases the strength and rigidity
(stiffness) of the box. An open-cell adiabatic foam mate-
rial fills the inside of the box to absorb internal reflec-
tions and dampen standing waves.

Power Amplifiers...

The low-frequency amplifier produces up to 55 watts

continuous before clipping, while the high-frequency
amplifier produces up to 30 watts continuous. Both am-
plifiers are Class A/B with power MOSFET outputs and
active protection circuits.

Thank you for choosing the MR5 Mackie Reference

Studio Monitors. Just as we revolutionized the studio
monitor market with our flagship HR824 Studio Monitor,
we have done it again with the most affordable precision
active studio monitors ever made. The MR5 features
design elements shared by our HR MK2 Series high reso-
lution studio monitors, providing a level of performance
never before available at this price.

Investments in Excellence...

The MR5s were designed by our expert loudspeaker

and transducer engineering teams at Mackie and EAW.
These compact studio monitors can be used in a variety
of applications, including small project studios, surround
sound editing, home theater playback, and desktop
audio workstations (DAWs).

High-frequency and low-frequency switches are

provided on the rear panel to adjust the sound of the
monitors to the characteristics of the room. Three types
of input connectors are provided (XLR, 1/4-inch, and
RCA), to interface with virtually any application you
may have.

The result? The MR5 Studio Monitors are extremely ac-

curate and versatile, with unique controls that allow you
to fine-tune the sound to match your individual environ-
ment precisely. You’re gonna love these!

What are they? The Advantages...

The MR5 Studio Monitors are two-way, bi-amplified,

active monitors employing a bass reflex (ported) design
for an extended low-frequency response. There are
many benefits to integrating an active crossover, power
amplifiers, and drivers into a single cabinet, and we’ve
taken full advantage of these benefits in the design of
the MR5.

• The crossover point is designed so that the high- and

low-frequency drivers are fed only the frequencies
they are best able to reproduce.

• The amplifiers are designed to provide maximum

acoustic output from the speakers, yet minimize
the danger of speaker damage due to overdriving.

• In addition, the amplifiers’ gain and frequency re-

sponses are individually hand-trimmed to compen-
sate for typical manufacturing tolerances between
the drivers and produce a smooth frequency
response from 60 Hz to 20 kHz.

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