PMC AML2 Manual de usuario
User Guide
AML2
TM
Advanced Transmission Line
Please take a few moments to complete the warranty card at the
back of this booklet (or register at www.pmc-speakers.com) as this not only records
the purchase of your loudspeakers, but also provides you with an opportunity to
make suggestions and provide feedback directly to PMC.
For product support, accessories or servicing advice, please contact
a PMC authorised dealer. See www.pmc-speakers.com
© 2010 PMC. All rights reserved.
This document should not be construed as a commitment on the part of PMC. The information it contains is
subject to change without notice. PMC assumes no responsibility for any errors within this document.
CE Conformity: PMC active loudspeakers conform to CE Directive LVD 73/23/EEC and EMC 89/336/EEC.
WEEE European directive: PMC Limited is a member of a National Compliance scheme and has gained the
associated certication of compliance from the Environment Agency with the registration WEEE/GJ0101WU.
This symbol on the product and in or on its packaging indicates that this product must not be disposed
of with other household waste. It is the responsibility of the owner to dispose of waste equipment via a
designated collection point for the recycling of waste electrical and electronic equipment. The recycling
of waste equipment is an attempt to conserve natural resources and ensures that it is recycled in a manner
that protects human health and the environment. For more information about where to dispose of waste
equipment for recycling, please contact your local waste/recycling authority or the dealer from whom you
purchased the product.
PMC LIMITED
43-45 CRAWLEY GREEN ROAD LUTON LU2 OAA UK
T 0870 4441044 F 0870 4441045
PMC USA LLC
17952 SKY PARK CIRCLE DRIVE SUITE A BUILDING 45 IRIVINE CALIF 92614 USA
T 949 861 3350 F 949 861 3352
IMPORTANT
!
A message from Peter Thomas –
arguably the world’s smartest loudspeaker designer
and a truly obsessive audiophile.
Our sole aim while designing loudspeakers was to recreate the true essence of an artist’s
intention, combining the ultimate level of sonic resolution with solid engineering principles.
We believe that the same loudspeaker can be used throughout the entire audio chain,
from composer to studio or lm stage, post-production or mastering and then, nally,
the consumer. Our unswerving passion for getting it right has made this goal possible.
Thank you for choosing PMC products. It is now time for you to read the user guide,
install your new AML2s, and realise just how much you’ve been missing.
Peter Thomas
Owner & Chief Designer
“
Over two decades PMC has earned an
unrivalled reputation for creating the
world’s nest professional loudspeakers.
Simply put, our loudspeakers provide a
reference for the world’s highest prole
productions and events. They are found
at every stage of the creative process,
from conception to recording and
broadcast and, of course, in the home.
Our client list reads like a who’s who of the
sonically aware, with Prince,
Stevie Wonder, Robbie Williams, Coldplay,
Brian May, Universal, Sony, Dreamworks,
Deutsche Grammophon and the BBC
among the makers of movies and music.
Our loudspeakers were used in the
production of Titanic, Spiderman III,
Monsters vs. Aliens, Finding Nemo,
Pirates of the Caribbean III and during
broadcasts of the Beijing Olympics, 2008.
Tori Amos
Stevie Wonder
Francis Rossi (Status Quo)
BBC
Tony Bennett
Prince
Coldplay
UNIVERSAL MUSIC GROUP
Basement Jaxx
Robbie Williams
Royal College of Music
Brian May
Warner Music
Kraftwerk
Underworld
Emil Berliner/Deutsche Grammophon
Google
Siemens
Sony
Congratulations - You have joined the elite.
User Guide
AML2
Contents
General Usage Guidelines
Introduction
Unpacking and Care
PMC’s
TM
Advanced Transmission Line
–How the Advanced Transmission Line Works
System Description
EQ Options
Connections
Running In
Applications and Accessories
Positioning
Surround System Set-up
Operational Controls
The PMC Range
Service
Specications
Our Meticulous Care and Attention
Warranty on-line
Warranty certicate – Part 1 – Your copy
Warranty certicate – Part 2 – PMC’s copy
Help us improve – Your Comments
Inspection certicate
Read these instructions and keep them in a safe place for future reference.
Heed all electrical safety warnings, including any on the loudspeakers themselves.
Do not use the loudspeakers near water.
Do not install the loudspeakers near any heat sources such as radiators, ovens or other
very hot equipment.
Do not attempt to service the equipment. There are no user serviceable parts inside.
Please refer all servicing to PMC authorised personnel.
Servicing is required when the apparatus is damaged, exposed to moisture, or exhibits
a distinct or sudden change of operation or audio performance.
Unplug this product from both signal source and power during electrical storms or
when unused for extended periods of time
Packaging material can pose danger to the young and vulnerable. Ensure these items
are stored or disposed of safely.
The AML2 monitor loudspeaker can produce sound pressure levels in excess of 110dB.
Long-term exposure to high levels of sound has the potential to cause hearing
damage. Use care when adjusting the system volume to ensure sound pressure levels
remain within safe and comfortable limits.
The AML2 loudspeaker contains very powerful magnets and therefore may have
detrimental effect on magnetically sensitive items nearby, such as CRT (tube-style
televisions or monitors, and media such as oppy discs, cassettes and videotapes.
The cabinet should only be cleaned with a dry, lint-free, cloth. Do not use solvents,
abrasives, waxes or liquids as they may be detrimental to the nish.
To avoid damage to ooring when using PMC Tube 104 Stand™, the user should
determine the suitability of either spikes or protective glides.
PMC has made efforts to provide accurate installation information and good quality
xings. However, PMC LTD/PMC USA LLC will not be held responsible or liable for injuries
or property damage (direct, indirect or consequential) arising out of use or inability to
use this product safely and properly.
General Usage Guidelines
Introduction
The AML2 monitor supersedes the legendary AML1 and takes the AML monitoring concept to
new levels of audio transparency through an array of signicant technical improvements. Like
the original, the AML2 has been rigorously designed to provide the ultimate in loudspeaker
engineering excellence, free of any constraints in application. This loudspeaker system is just as
suitable for a state-of-the-art recording or mastering studio as it is for an audiophile’s listening
room.
The AML2 retains its predecessor’s revolutionary at piston bass-driver constructed from the
space-age materials of NomexTM and carbon-bre, along with the timeless qualities of silk in the
bespoke soft-dome HF unit. However, the new OAM1 Op-Amp Modules employed in the EQ
circuitry have reduced both distortion and noise, bringing noticeable improvements to the sound
staging and separation in the mid and high-frequency regions. The rear of the cabinet structure
has also been made stronger, and the electronics supported more rigidly – both contributing
to even lower levels of cabinet colouration and making the AML2 even more robust. Magnetic
shielding is, of course, included as standard.
Bass is loaded by PMC’s unique implementation of TM
Advanced Transmission Line
(Advanced Transmission Line)
technology. This design approach uses contemporary materials to provide optimised absorption
of unwanted midrange energy within the cabinet, whilst extending bass output signicantly.
The smooth response of the very high-power tweeter extends beyond 22kHz and uses a
perforated grille that acts as an acoustic lens to control dispersion, working in concert with a
waveguide contour integrated into the front bafe. This arrangement guarantees supreme sound
staging and imaging accuracy.
The electronics built into each cabinet comprise two channels of power amplication designed
by Bryston – the world’s leading audiophile amplier manufacturer. The active crossover section
employs steep 18 and 24dB/octave lters, a transparent protection circuit, and user-adjustable
acoustic correction controls which can be totally bypassed when not required.
‘The AML2 is designed and hand built in England, by nice people who care, and who love audio’
Unpacking and Care
The AML2 monitor system is packed in a heavy-duty protective carton. Please retain this to ensure that
these monitor speakers can be transported safely if the need arises in the future. If you dispose of the
packaging please do so in an environmentally responsible and safe way.
Inside the packaging you will nd two region-appropriate IEC mains-power leads, a spirit level, and this
manual which incorporates a warranty registration card and test certicate. Please advise your dealer
if any of these parts are missing.
In normal usage PMC speakers should provide you with many years of trouble free operation, but in
the unlikely event that you suspect damage or failure has occurred please do not attempt to repair
the unit yourself. There are no user-serviceable parts inside. Contact your dealer for advice and a
service return address.
Cleaning may be carried out with a dry lint-free cloth. Avoid the use of solvents as they may damage
the nish of the unit.
!
harmonic distortion and the result is PMC’s
characteristically transparent midrange, fast,
attacking bass, and outstanding clarity.
A further advantage is greater bass extension
and loudness than a ported or sealed
design of a similar size, even if similar drivers
were used. Moreover, the very consistent
bass driver loading brings the welcome
benet that the frequency response remains
consistent regardless of listening level, and
analytical auditioning can be conducted
without the need for high replay volumes to
achieve optimal bass response – a unique
and very valuable characteristic.
PMC’s unique TM
Advanced Transmission Line
(Advanced
Transmission Line) enclosures have taken
loudspeaker design to the highest level,
using sophisticated cabinet construction,
proprietary drive units, and patented
absorption materials and techniques. The
benets are enormous compared to the
relatively simple sealed and ported designs
currently available elsewhere.
PMC’s innovative approach places the bass
driver near one end of a long tunnel (the
Advanced Transmission Line). This tunnel
is heavily damped with acoustic material
specied carefully to absorb the upper bass
and higher frequencies radiating from the
rear of the bass driver. The lowest frequencies
are allowed to pass down the line and
emerge from the large vent in the same
polarity as the driver’s frontal radiation,
the vent acting essentially as a second bass
driver.
An important benet of the TM
Advanced Transmission Line
approach
is that the air pressure inside the cabinet,
loading the bass driver, is maintained.
This helps to control the driver over a wide
frequency range and signicantly reduces
LF distortion. Consequently, the upper bass
and midrange detail is not masked by
How the Advanced Transmission Line Works
TM
Advanced Transmission Line
‘No other bass loading technology provides such resolution and tonal accuracy at all volume levels’
AML2 cross section
showing TM
Advanced Transmission Line
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