PMC Twenty 5.26i Walnut, Twenty 5.21i White Silk, Twenty 5.23i White Silk, Twenty 5i Centre White Silk, Twenty 5i Centre High Gloss Black twenty5i_3.pdf
At PMC, we believe that music is what really matters; it’s what
moves us and gives us the passion for what we do.
It’s relatively easy to create loudspeakers that colour or
atter music — but that has never been our way. The quest
for sonic neutrality and transparency has always been PMC’s
obsession, using advanced engineering to reproduce music
as vividly and faithfully as possible. Our designs are involved
in every stage of music-making, from the recording studio to
listening at home. From this experience, we know exactly how
to present music as transparently as possible, just as the artist
intended.
As we like to say, loudspeakers are where science meets art —
we take care of the science so you can connect with the art.
Artists and institutions who made music with PMC, composing,
mixing or mastering with our Emmy-award-winning loudspeakers:
JOHN NEWMAN
ELBOW
EMBRACE
SADE
STEVIE WONDER
COLDPLAY
KRAFTWERK
PETER GABRIEL
ROBBIE WILLIAMS
BRIAN MAY
MARILLION
SONY MUSIC
UNDERWORLD
TONY BENNETT
BASEMENT JAXX
UNIVERSAL MUSIC
METROPOLIS STUDIOS
STUDIOS 301
TELDEX STUDIOS
EMI
ROYAL SHAKESPEARE COMPANY
DECCA
ORF
THE DÜSSELDORF UNIVERSITY OF MUSIC
THE ROYAL SCHOOL OF MUSIC
WARNER MUSIC
BBC RADIO
BBC TV
CAPITOL STUDIOS
CHESKY RECORDS
NY UNIVERSITY
TAPE LONDON
Just some of the movie and TV music made with PMC:
GAME OF THRONES
SPECTRE
SKYFALL
SAVING MR. BANKS
MAN OF STEEL
THE ADJUSTMENT BUREAU
WALL-E
INCEPTION
TRON
THE DARK KNIGHT
GRAN TORINO
DEADPOOL 2
AVENGERS INFINITY WAR
WATCHMEN
DAY OF THE DEAD
HALLOWEEN
HANCOCK
INDEPENDENCE DAY
HULK
THE FUGITIVE
ALIEN VS PREDATOR
THE SIXTH SENSE
THE PASSION OF THE CHRIST
DIE ANOTHER DAY
PLANET OF THE APES
FINDING NEMO
FINDING DORY
CHICAGO
PIRATES OF THE CARIBBEAN
TERMINATOR 3
AMERICAN BEAUTY
LOVE ACTUALLY
MAD MEN
FARGO...
Whether you listen to our speakers in a world-class studio in LA,
London, Nashville, Tokyo, Berlin or your favourite listening room at
home, you will hear the music exactly as the artist intended it.
iMPROVING
A LEGEND
PMC’s now-legendary twenty5 series won ve-star ratings and
awards worldwide, and were chosen to form the reference
surround system for What HiFi magazine — the speakers by
which all others are judged. But true innovators are never
satised. Our team never stops looking for ways to hone their
designs, using new technologies, materials, or discoveries,
including innovations from outside the audio industry. This quest
has led to the creation of the new twenty5i series speakers —
where ‘i’ stands for improved. The new range offers everything
that made the twenty5 series so sought-after, but with even
greater realism, transparency and musicality.
INTRODUCING
TWENTY5
The twenty5i range consists of four two-way loudspeakers
ranging from the compact shelf-mounting twenty5i.21 to
the oorstanding twenty5i.24, plus the agship three-way
twenty5i.26. There’s also a Centre channel model and the
proven subwoofer for use in surround systems.
Our core belief is that the same ultra-high resolution
loudspeaker, if properly designed, can be used throughout the
entire recording chain. That’s why our designs are employed at
every stage of music-making, from lm soundtrack composers’
music rooms to recording studios through to the home,
preserving the essence of the original performance exactly as
the artist intended. Because the characteristics and tonality of
all our speakers, from large to small, are essentially the same,
it’s a simple matter to mix and match different models to
create your perfect immersive audio system.
WHY THE
Toby Ridley is a key member of the research and
development team for the twenty5i range.
Toby, the twenty5 series was such a success — why
change it?
Since the twenty5 series was launched, we’ve carried
out a lot of research into improving high-frequency
denition in loudspeakers and also into identifying and
reducing unwanted vibration, which can colour the
sound you hear, making it less realistic and also causing
blurred imaging. All of this research helped us hone the
design of our agship, fenestria, and also fed into the
design of the twenty5i range.
OK, so what’s different?
We’ve made changes to further widen the twenty5
series speakers’ already impressive sweet spot, and
reduce colouration from unwanted vibration. The
oorstanders are mounted on new anti-vibration plinth
bars; they acoustically isolate the speakers from the
oor, dramatically reducing vibration transmission and
preventing unwanted vibrations being retransmitted by
the oor and passed back into the loudspeaker. The
result is a more vivid, dened and open soundstage,
free from smearing with high-frequency focus.
Apart from the drivers, what else is different?
We’ve also modied the crossover on all models in the
twenty5i range. That’s the part of a loudspeaker that
divides the audio input, so the high frequencies are only
routed to the tweeter, for example. We’ve lowered the
point where audio crosses over from being handled by
the tweeter to the bass driver. That means the woofer
isn’t being pushed to produce frequencies that are too
high for it, making the combined output of the drivers
wider and more enveloping.
If you had to summarise the effect of all these changes,
what would you say?
The twenty5i series has an even wider sweet spot with
cleaner, more three-dimensional imaging. The rst thing
that you’ll notice is that vocals are more natural and
tangible — it really does feel like a live performance.
Have there been any changes to the twenty5 drivers?
They were already pretty ne…!
We’ve incorporated a new tweeter, which was
developed from the one in the high-end fact range.
The new driver is effectively two drivers in one — you
can read more detail about its unique design later in
this brochure. It also has a smoother frequency response
in the upper registers. Finally, the new driver has a
gently curved high-frequency dispersion plate and
grille; the plate is made from an extremely rigid glass-
bre composite that further widens the sound eld and
creates a stable platform for the driver to excel.
The twenty5i series has an even wider,
more consistent sweet spot, and
imaging is cleaner, sharper, more vivid
and more three-dimensional.
twenty5.21i in Diamond black
Although the twenty5.21i is the most compact model in the
new range, there’s nothing small about the sound, which
has the impact you’d expect from a much larger cabinet,
thanks to PMC’s Advanced Transmission Line technology.
The speaker is ideal for use in small-to-medium listening
environments where space is at a premium, but where you
still want detailed bass, ultra-realistic mids and delicate
highs with maximum musicality. Equally happy mounted
on a stand or a bookshelf, the twenty5.21i offers maximum
exibility for placement, and also makes an excellent
choice for effects speakers in an immersive sound system.
smallmediumlarge
Choosing the right twenty5i model for your room size
The more substantial twenty5.22i is designed for use in
larger spaces than the 21, and is equally at home on
its dedicated stands, console furniture or other at
surfaces. Its still-trim dimensions belie the lengthy ATL
concealed inside, which, coupled with the powerful
6.5-inch g-weave bass driver and Laminair
to deliver a clean, uncluttered and powerful low-end,
together with detailed highs from the newly designed
soft-dome treble unit. Despite its increased size, its
performance is agile and full of dynamism.
smallmediumlarge
Choosing the right twenty5i model for your room size
™
vent, allow it
™
twenty5.22i in Oak
The 23 has proved to be the most popular model in our
twenty and twenty5 range of speakers, and the twenty5.23i
looks set to follow their success. Its discreet and elegant
oor-standing form is perfect for lling medium-sized
rooms with transparent, authentic dynamics and
effortlessly extended bass, and it will blend unobtrusively
into any room, whether your chosen décor is modern or
traditional. As with all of the twenty5i range, it will make
the best of even affordable source electronics, and,
coupled with high-end amplication, will truly excel.
smallmediumlarge
Choosing the right twenty5i model for your room size
twenty5.23i in Walnut
twenty5.24i in Diamond black
The largest two-way speaker in the range, the twenty5.24i
delivers compelling life-like performances with realism,
precision, bite and power. Even in medium-to-large
listening rooms, its seamlessly integrated drivers and
™
saturate the space with music, giving you a hi-
ATL
delity experience like no other in a slender and graceful
cabinet design that will delight your senses without
dominating your room. With the grilles in place, the
twenty5.24i produces a sound that many could mistake
for that of a three-way speaker.
smallmediumlarge
Choosing the right twenty5i model for your room size
PMC is respected worldwide for its soft-dome midrange drivers, and the agship twenty5.26i, the largest in
the range, features a third driver dedicated to the all-
important mid frequencies, where the critical detail is
to be found in vocal recordings. The three-way design
ensures that each important frequency range has its
own dedicated driver, so that the speaker can ll even
the largest spaces with absolute transparency and
clarity. This is a sublime speaker that can expand with
you as you upgrade your system, and bring out the very
best in whatever equipment you connect it to.
smallmediumlarge
Choosing the right twenty5i model for your room size
twenty5.26i in Walnut
The twenty5.Ci is the latest iteration of PMC’s full-range
centre loudspeaker for surround listening systems. It
features twin g-weave bass drivers, and the new twenty5i
treble driver in a package designed to provide the rocksolid centrepiece of an all-enveloping soundstage with
the last word in ultra-realistic imaging. Delivering PMC’s
trademark dynamic range, delicate highs and clean,
powerful bass, this speaker’s wide, even dispersion
allows it to be positioned high or low without affecting
the clarity and dramatic impact of movie dialogue,
allowing you to realise the full potential of an immersive
audio movie playback system without compromising
intelligibility.
twenty5.Ci in Walnut
twenty5.sub in Diamond black
The twenty5.sub remains the optimum partner for a
twenty5i series immersive audio system, combining
active electronics from PMC’s renowned professional
systems, 400W Class-D amplication with ultra-low
distortion, PMC’s proprietary ATL
™
and Laminair
™
technologies, and a pair of the powerful 6.5-inch highexcursion bass drivers used on the twenty5i series. This sub
can faithfully reproduce frequencies down to 22Hz, and
handle dynamic contrasts from the sonic complexity of
a Hollywood blockbuster soundtrack to the precision
detail of an orchestral performance, with maximum
resolution and precision-timed bass.
Using its built-in rear-panel EQ, the sub can be nely
tuned to its listening environment, and also perfectly
integrated with any accompanying surround or stereo
speakers. Together with the compact twenty5.21i or 22
speakers, the sub forms a powerful system; the twenty5.
sub looks after the low frequencies, leaving the left and
right speakers to reproduce the mid-range. The result is
performance close to that of the three-way twenty5.26i,
but in a more compact, unobtrusive format.
AN AUDIO
REVOLUTION
The source of PMC’s natural, realistic sound is the Advanced
™
Transmission Line (ATL
professionally proven all around the world.
™
uses energy generated by the bass unit in a much more
ATL
intelligent, efcient way than speaker designs based on ported
or sealed boxes. In ATL
cabinet is lined with a multitude of custom-designed acoustic
materials that absorb all but the very lowest frequencies. These
exit from a front-panel vent, extending the low-frequency
response, and creating the impression of a far larger speaker
with an extra, ultra-high quality bass unit.
™
improves more than just the bass response; because the
ATL
low end is clean and clear, it doesn’t mask the rest of the music.
Vocals, in particular, are beautifully projected and ultra-vivid.
) bass-loading technology,
™
loudspeakers, the highly braced
™
loudspeakers offer another benet. The AT L™ bass
ATL
extension does not change with volume level — so even when
listening quietly, the bass sounds balanced and well dened.
The Unique Benets:
• More detailed, more natural
• Full, rich sound at any volume level
• Deeper bass from a smaller cabinet
“No other technology provides such a
huge, rich, room-lling sound”
“Formula 1 aerodynamic
principles applied to the ultimate
bass-loading technology.”
twenty5.24i showing ATL in
cross-section with Laminair vent
Laminair aerodynamic vent
Standard loudspeaker vent –
slow and turbulent airow with
drag
The aerodynamic Laminair
vent – smooth, rapid and
efcient airow
The combination of ATL™
and Laminair takes audio
quality to unparalleled
new heights:
• Faster, cleaner bass and
higher-denition sound
throughout
• Turbulence is eliminated,
increasing the efciency
of the ATL
™
• Removes air noise – only
the music remains
• Higher maximum output
and bass with supreme
timing and dynamics
The twenty5i series takes audio performance to the next level by
integrating Laminair vents into their designs. PMC’s Head of Design,
Oliver Thomas applied aerodynamic principles he discovered in
™
his previous employment in Formula One to ATL
, creating an
even smoother, laminar airow at the exit from the transmission
™
line. ATL
designs involve air moving at high speeds and under
pressure, and Oliver showed that reducing turbulence and
™
drag at the ATL
vent reduces resistance, increases efciency,
eliminates air noise and provides bass with supreme timing and
the ultimate dynamic range.
“Nothing else comes close to the clarity,
timing and dynamics”
TRIED-ANDTESTED LOW
END
PMC put over 25 years of experience into designing and
manufacturing the bass driver for the twenty5 series. The
twenty5i range features the same high-specication bass units,
crafted to produce audio with the maximum possible drive,
resolution and detail, and minimum colouration. The driver
cone is made from a custom resin-bound, ne-weave glassbre composite to ensure maximum rigidity and strength —
conventional cones would simply crumple and deform when
coupled to the ATL
ultra-light, so it can respond instantly to changes in dynamics
and also remains tonally neutral. With our ATL
technologies, these drivers allow you to hear your music, not
the loudspeaker.
™
in the cabinet. And yet the driver is
™
and Laminair™
OPEN,
DETAILED &
DELICATE
The new twenty5i high-frequency driver, a 19mm SONOMEX
soft-dome design, was derived from the high-frequency
unit on PMC’s premium fact speaker range; both were coengineered with respected Norwegian driver manufacturers
SEAS. The dome on the twenty5i range is mounted in the centre
of a large roll surround, an arrangement which gives the effect
of two drivers in one; it can produce the wide dispersion of a
small-dome driver and the higher output of a larger driver.
The newly designed ultra-rigid HF dispersion plate and grille
enlarge the optimum listening position still further, meaning you
can listen from a wide variety of positions in your room and still
enjoy PMC’s consistent, ultra-detailed sound with razor-sharp
imaging.
™
twenty5i series HF drive unit
DIVISION
WITH
PRECISION
The crossover is an essential component of any quality
loudspeaker, dividing the incoming audio from an
amplier into multiple signals with specic frequency
ranges best suited to reproduction by each of the
loudspeaker’s drive units. During the design of the
two-way twenty5i speakers, the crossover point where
the tweeter hands over to the bass unit was lowered,
allowing the LF driver to focus more efciently on its core
frequency range, while making sure the tweeter remains
unencumbered by mid-range frequencies. The result is a
more consistent, room-lling sound, with a wider sweet
spot.
The twenty5i models feature sophisticated crossovers with
accurate lters mounted on military-grade bre-glass
boards, ensuring that only the ideal frequency range is
precisely routed to the correct driver. Thick, pure copper
tracks are used to connect the hand-selected crossover
components to optimise signal delivery, and even the
material of the crossover back plate has been carefully
considered. The brushed stainless-steel back panel is also
magnetically inert, preventing any adverse interaction
with components.
MORE
DETAIL
Our holistic design philosophy means we consider every
element of the loudspeaker’s design and its effect on
performance.
BINDING POSTS
We design and make our own binding posts for perfect
connectivity, machining and plating them with matte rhodium
for the best possible conductivity. They are directly coupled
to the crossover board to keep the signal path as short as
possible.
GRILLES
The speakers’ elegant grilles are magnetically xed to the
cabinet, so there are no unsightly fastenings, and their slim-line
prole ensures they have no detrimental effect on the sound
of the speakers.
SPIKES
The custom one-piece stainless-steel spikes thread into the
plinth bar for a sure-footed setup.
THE BEST,
BAR NONE
During the development of fenestria, our agship model, we
established new and innovative ways to analyse vibration
and how it affects loudspeakers. We found that if we were
to cancel or absorb specic frequencies, we could radically
enhance the audio performance and provide even greater
levels of realism.
We have applied this knowledge to the twenty5i series by
adding precision-engineered plinth bars that isolate the
speakers from the oor when combined with carefully
specied damping materials. Decoupling the loudspeaker in
this way prevents unwanted energy being transmitted back
to the drive units, so they remain completely focused. Our
vibration analysis results show dramatic improvement, but
more importantly, the audio picture and denition are truly
astounding. Simply put, you hear less loudspeaker and more
music.
We know what it takes to make great music. Our loudspeakers feature at every stage of the music-making process.
ONLY PMC
CAN BRING
YOU THIS
CLOSE
PROUDLY
MADE IN THE
UK WITH CARE
Our loudspeakers are designed and hand-built with care and
attention by fastidious people at the PMC facility in the UK,
where every single component is measured and graded.
Every detail, from the individual elements on the crossover and
in the drive units right up to the cabinet, is tested to ensure it
meets our exacting standards for performance and reliability.
This ensures each new model is a duplicate of the reference
design.
A full computer analysis is taken for each completed
loudspeaker, so we know it is technically perfect — but we
go one step further. Computers don’t tell the full story, and
our customers listen with their ears — so we do too. We run a
benchmark BBC speech test and play an extensive array of
music (including classical, pop and rock) on each loudspeaker
we produce. Every one is compared with its reference model
and both speakers in each pair are cross-checked to ensure
a perfect match. Such is the condence in our work that we
offer an unparalleled 20-year warranty on all passive consumer
Ferrouid cooled, with 34mm surround and dispersion grille
Crossover freq. 1.7kHz
Input connectors One pair 4mm binding posts
Dimensions H 174mm 6.9”
W 554mm 21.8”D 314mm 12.4” incl. binding posts (+9mm grille)
Weight 11kg 24.3 lbs ea.
Finishes Oak, Walnut, Diamond black & Silk white
Freq response 22Hz - 200Hz
Effective ATL
™
3m 9.8ft
Drive units LF 2 x PMC 6.5”/170mm long-throw g-weave™ cone with cast alloy chassis
Input connectors 2 x balanced analogue (left/right XLR female)(RCA unbalanced adapter provided)
1 x AES digital XLR female (accepts 32 -192kHz, 24bit)
Output connectors 2 x balanced analogue (left/right XLR male) 1 x AES output XLR (male)
NB: Both analogue and digital outputs are active regardless of sourceMains power IEC connector 90-132V / 180-264V AC auto-sensingAmplier power 400Wrms Class-D
User controls 1 x Parametric EQ
- Gain: -8.00 to +8dB
- Freq: 20Hz-150Hz
- Q: 1 to 8 in 0.5
Selectable LF rolloff slope: off (6dB/Oct, 12dB/Oct, 18dB/Oct)
Selectable LF rolloff frequency points: 50Hz, 80Hz, 120Hz, 150Hz, 200Hz +10dB Gain: off/on
Phase reverse: off/on
Phase: 0-80 degrees in 5-degree steps
Volume range -48.5dB to +15dB
Dimensions H 587mm 23.1” (+20mm spikes)
Weight 25kg 55.1 lbs ea.
Finish Diamond black
Warranty 5 years
twenty5i, Laminair and g-weave are trade marks of The Professional Monitor Company Limited
The Emmy name and the Emmy statuette are the trademarked property of The Academy of Television Arts & Sciences and the National Academy of Television Arts & Sciences
This document should not be construed as a commitment on the part of The Professional Monitor Company Limited. The Professional Monitor Company Limited will not assume responsibility for errors
that may appear in this document. Information may be subject to change.
Copyright ® 2020. All rights reserved.
THE FINISH
Keeping pace with current interior design trends, the
twenty5i series is available in a lustrous diamond black and
a variety of silk nishes, including white and two different
natural timbers*, hand-selected from sustainable sources
— so the speaker looks as elegant as it sounds.
* twenty5.sub available exclusively in Diamond black