Студийный монитор M-AUDIO EX66. Инструкция на английском языке

Active Loudspeaker Monitor
User Guide

English                                                                            EX66  •  User Guide
Introduction                                           EX66 Features
Congratulations on your purchase of M-Audio’s EX66 reference
monitor.  Recording  engineers  and  music  producers  around  the                                       English
world rely on M-Audio reference monitors to ensure their mixes
are  accurate.    The  EX  series  active  monitors  from  M-Audio
improve  upon  that  reputation  as  a  top-of-the-line  solution  for
the most demanding applications.  Engineered to the highest sonic
standards, the new EX66 monitor addresses the needs of the most
critical professional users.  Furthermore, the speaker’s “midwoofer-
tweeter-midwoofer”  (MTM)  con?guration  is  particularly  well-
suited for multichannel monitoring and for rejecting vertical early
re?ections.
The EX66 represents the culmination of nearly two years of design
and development.  Custom-tuned cabinets, state-of-the-art driver
design,  selectable  analog  and  digital  inputs,  and  ?exible  digital
signal processing combine with ultra-clean built-in ampli?cation to
deliver the best sound available in an active loudspeaker monitor.
We are pleased to present to you what we believe to be the most
versatile and accurate audio monitoring solution for professional
and high-end applications.
What’s in the box?
Your EX66 box contains:
<  One EX66 speaker monitor
<  Frequency response curve
<  One detachable AC power cord
<  One audio CD containing calibration signals
<  This manual
Figure 1:  Front View of the EX66
Did You Know...?
...that the box can double as a sturdy
transport  case  for  your  EX66?  We
designed  the  packaging  to  make
it  easy  for  you  to  carry  your  EX66
monitors  between  your  studio,  home,
or anywhere you want to take them. So
save the box!
Figure 2:  EX66 Rear Panel View
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What’s with the Two Silver
Woofers?          ?
The EX66 uses a midwoofer-tweeter-midwoofer (MTM) vertical   Bass-Re?ex Port  ??
array con?guration to provide an extraordinarily versatile sound   Many loudspeaker enclosures use an air vent (or port) to form
radiation pattern (degrees of arc for the sound wave, vertically   a Helmholtz resonator, which improves bass response.  In some
and  horizontally).    Consider  the  following:    conventional  2-way   ported speakers, however, you can hear friction noise from air
speakers in a stereo setup require that you listen to them in a   moving in and out of the enclosure—but not here.  We developed
fairly narrow “sweet spot” (where you position yourself at the   a rear-cabinet port with dual ?anges to minimize the vibrations
apex of an isosceles triangle with the speakers).  By contrast, a   normally generated by low-frequency signals.  This custom port
stereo pair of EX66 monitors provides a wide sweet spot, creating   is  extremely  ef?cient  in its  air transfer  characteristics and it is
a proper stereo image even when you are not exactly equidistant   virtually noise-free.
from  each  speaker.   This  means  more  people  in  the  room  can
bene?t  from  the  EX66s’  accuracy  and  detail  without  having  to   Enclosure
?ght for the “money” seat.                            Like the other components, the EX66’s enclosure has an important
role in shaping the overall sonic response. In order to provide
Also, while our MTM con?guration gives you a wide horizontal   more stable performance, we designed an enclosure made of a
sweet spot, it limits vertical sound diffusion to a cardioid pattern.    special high acoustic ef?ciency medium density ?berboard (MDF)
This helps minimize re?ections off of mixing desks and improves   and unique interior reinforcement designed to absorb vibration
sound intelligibility.  (As near-?eld monitors are often positioned   and  impact  generated  under  extreme  conditions.    Further,
on top of mix consoles, there is a persistent problem of early   our  custom-designed  waveguides  on  the  front  panel  minimize
re?ections off the desk surface which can “smear” sonic details;   diffraction and improve stereo imaging.
the EX66 vertical axis rejection characteristic greatly reduces this
problem.)                                             Digital Signal Processing
All  mechanical  and  electrical  systems  are  inclined  to  vibrate
Finally, we designed the woofers from a state-of-the-art material   (or  resonate)  at  certain  frequencies  when  excited  by  external
that happens to be a nearly perfect reproducer of sound. Our   forces.  For loudspeaker cabinets, resonances can be a particularly
drivers  have  exceptional  intrinsic  damping  characteristics  and   insidious  problem  because  they  color  the  timbre  of  the  music.
absolutely  no  frequency  response  peaks  (resonances)  in  the   The  human  ear/brain  mechanism  is  capable  of  perceiving  even
audible band.  They provide truly linear pistonic action over the   extremely  subtle  resonances,  and  it’s  this  phenomenon  that
entire musical spectrum, revealing more of music's subtle details,   allows critical listeners to distinguish easily between exceptional
and bringing all portions of each musical transient into correct   loudspeakers  and  mediocre  ones. At  M-Audio,  we  decided  to
alignment.  But don’t just take our word for it—as the old proverb   address the problem of cabinet resonances with a novel yet highly
goes, “the proof of the pudding is in the eating.”  In other words,   effective solution.
listen for yourself!
The EX66 contains sophisticated digital signal processing (DSP)
technology to tune the cabinet and crossover with exceptional
precision.  The EX66 eradicates all resonances from the cabinet
Did You Know...?                                    by  using  IIR  (in?nite  impulse-response)  ?lters  in  its  on-board
processor.  The EX66 also uses DSP to achieve its precise and
...that  our  drivers  can  withstand  extreme      maximally ?at 4th-order Linkwitz-Riley crossover.
temperatures, moisture, humidity, sunlight, and
salt?  The  material  we  use  to  make  our  EX-   Bi-amped Ef?ciency
series  cones  is  reminiscent  of  that  employed   The EX66 uses two separate 100-watt PWM power ampli?ers to
at  one  time  by  NASA  scientists  to  form  heat   drive the 4? woofer combination and 4? tweeter separately in a
shields for Space Shuttle orbiters.
high-end bi-amp structure. The ultra-low distortion at 200 watts
per channel rounds out the EX66’s pro?le as a truly world-class
active loudspeaker monitor.
Other Noteworthy                                         Versatile Connectivity
Characteristics                                          We’ve  provided  high-impedance  (20  k?)  balanced  XLR  ?   and
TRS  ?   analog inputs as well as 110 ? AES/EBU (AES3  ? ) and
Titanium Tweeter  ?                                    75 ? (S/PDIF  ? ) digital inputs—all to give you maximum ?exibility
We’ve discussed the woofers in some detail, but of equal importance   in  your  connections. The  digital  inputs  automatically  detect  the
is the high-frequency driver.  Our 1” tweeter sounds as smooth as   bit depth and sample rate of the incoming signal and can lock to
it looks.  Titanium is known in the aerospace industry for its high   incoming clocks up to 192kHz and with 24-bit resolution—all with
tensile-strength-to-weight  ratio  and  its  resistance  to  corrosion.    the lowest jitter specs in the industry.
We made our tweeters out of titanium in order to create a stiff,
yet  responsive  piston  that  moves  natural  resonant  modes  well
above  20kHz,  allowing  the  tweeters  to  track  every  nuance  of
musical detail as accurately as possible, without smearing any high-
frequency energy.  We designed and tuned these custom tweeters
to sound crisp and transparent, without the harshness sometimes
associated with rigid high-frequency drivers.  The result is a natural
complement  to  the  low-frequency  drivers,  providing  smooth,
coherent reproduction over the entire audio band.
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