M K 300 Series Whitepaper
THE WHITE PAPER
www.mksound.com
S300 SEREIS WHITE PAPER · ver.1 · MAY 2014
S300 SERIES
The Miller & Kreisel S300 Series by M&K Sound
S300 SERIES
Introduction
After inventing the subwoofer in 1973 for use
in the mixing of the classic Steely Dan LP Pretzel
Logic and re-inventing it more recently with the
acclaimed X Series, we at M&K Sound knew that
the time was right to raise the stakes once again
with an all-new top of the range series carrying
our new reference logo Miller & Kreisel
The satellite/subwoofer configuration pioneered by
M&K Sound and refined over the past 40 years allows
the main speakers to be more compact, making high
performance audio available with a far less spaceconsuming profile.
As a company founded on professional music and
film recording and High End home entertainment, the
goal for all M&K Sound design work down through
the years has always been accurate and realistic
reproduction of whatever the microphones capture.
Designed and assembled in Denmark, the birthplace of
the dynamic drive unit and of the acoustic sciences, the
S300 Series takes compact reference satellite monitor
power handling, dimensionality and resolution to new
heights.
As an utterly neutral conduit, the S300 Series neither
adds nor subtracts. It simply reveals.
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The Miller & Kreisel S300 Series by M&K Sound
THX Certification
The Miller & Kreisel S300 Series by M&K Sound
Proprietary Crossover Concept
The Miller & Kreisel S300 loudspeaker system
has been subjected to rigorous impartial testing
and certified to meet the highest industry performance standard: THX Ultra2.
Today, THX is the highest independent quality standard dedicated to the accurate reproduction of audio
sources in the home. THX certification attests that the
component has been thoroughly evaluated by a fully
independent body and found to live up to the strictest
quality requirements in the audio industry.
THX is a set of performance standards originally developed by Lucasfilm Ltd. in connection with the premiere
of Star Wars Return of the Jedi in 1983 to establish
criteria to ensure that the creations of cinematic artists are reproduced exactly as intended. The THX logo
immediately became recognized as a seal of approval
for quality-conscious cinema-goers around the world.
In 1991, M&K Sound became one of the first manufacturers to join George Lucas and his Lucasfilm Home
THX program for domestic installations.
”We are impressed with performance of the
new THX Ultra2 certified M&K Sound S300. It
is evident that a lot of attention was paid to
the design and componenet selection of this
product and this effort shows the systems ability
to deliver smooth response with high output
and very low distortion”.
- Mike del Santo, THX testing manager
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M&K
Sound’s
proprietary
Phase-Focused
crossover networks make the S300 Series ideal
for both music and movies without compromise.
Seamless integration of the two driver arrays is
achieved with an 4th order roll-off of the mid/
bass section (24 dB per octave) as the tweeter
array is controlled by a 2nd order filter (12 dB
per octave). The tweeter section incorporates
effective phase correcting circuitry for resonance
control to minimize system impedance variation
and maintain minimal phase shift across the total
system bandwidth.
power polypropylene capacitors with thick copper
wire connections and costly distortion-less air-core
inductors wound from 1.2 mm high-purity copper
for virtually flat frequency response with ideal phase
characteristics.
Based on crossover components
carefully selected for extremely tight performance
tolerances and high power handling, any S300 model
is a fine partner for virtually any amplifier.
Wide horizontal directivity provides even coverage of
the listening area, while controlled vertical directivity
reduces reflections off the floor, ceiling, tables, etc.
By significantly reducing reflected sound, image
specificity, localization and dialog intelligibility are
vastly improved.
The transient-optimized crossovers incorporate
audiophile-grade components including high-
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The Miller & Kreisel S300 Series by M&K Sound
The Miller & Kreisel S300 Series by M&K Sound
Iconic Driver Layout with Innovative
Internal Bracket Mounting
The iconic front baffle layout of the famed S150
monitor with its triple-tweeter array alongside
dual woofers is also an integral aspect of the
design and performance of the S300.
Innovative Danish Driver Design
M&K Sound’s engineers have decades of experience in the design of individual drivers as well
as complete loudspeaker systems. Because we
are fully conversant in the languages of both
the acoustical engineer and the audiophile music lover, M&K Sound can enter into a mutually
beneficial collaboration with the world’s most
acclaimed makers of drive units.
clusively for the Miller & Kreisel S300 Series to ensure
pure, high definition sound with extraordinary speed
and transient control.
S300 drivers are built to M&K Sound’s exacting specifications by Scan Speak of Denmark, with a forty-year
history of ground-breaking innovation and multiple
patents for breakthroughs in every aspect of driver
design.
Aerodynamic air flow design is the watchword for the
new generation of drive units designed and built ex-
driver positioning are critical to the achievement
of fast, accurate audio reproduction. Optimal
performance in this area requires correct definition
of the acoustic centers of the tweeters and woofers,
near the voice coil/dome assembly in the tweeter and
further forward, closer to the surround for the woofer.
The S300 Series introduces specially designed
separate tweeter and woofer mounting brackets for
exceptional mechanical isolation from the cabinet and
a tight connection between the die-cast, custom made
brackets and the front baffle.
Positioning the drivers accordingly synchronizes the
sound from both drivers for enhanced timing and
exceptional rendering of fine detail.
All drivers are rear mounted to the brackets and the
brackets are rear-mounted to the baffle for an elegant
front with no unsightly screws and no reflective
edges near the drivers. This effectively eliminates a
major source of coloration in more conventional, less
conscientiously designed loudspeakers.
The low crossover point requirements of larger
component values minimize electrical phase delay
further contributing to seamless timing of the two
arrays.
The dual woofers are mounted with in the baffle
with no reflective edges to eliminate reflections and
resonance peaks.
Acoustic Alignment
With the mid/woofers slightly recessed in the baffle
and each tweeter mounted in a carefully calculated
waveguide, the acoustic centers of all drivers can be
precisely aligned for ideal phase/time relationships
to deliver the flawless timing that has always been a
hallmark of M&K Sound..
The drive units in each triple tweeter array are carefully
measured and matched prior to mounting. Employing
three tweeters allows significantly increased power
handling, reducing the load on each individual driver
and making it possible for the system to operate
optimally at a lower crossover point and with minimal
phase shift.
The demanding 1.5 Khz crossover point and precise
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The Miller & Kreisel S300 Series by M&K Sound
The Benefits of the
Triple-Tweeter Array
It is a well known fact that a solo
tweeter in a system, regardless
of its quality, will tend to sound
and behave like a point source.
Most tweeter designs display
identical dispersion characteristics
in all directions unlike cone drivers
and tend to lose energy when
measured and listened to in offaxis positions.
The selection of the tweeter
array configuration completely
re-defines the starting point for
overall system design.
1.
With three tweeters
connected in parallel, the power
load on each tweeter is reduced
to 1/3, so that at any given peak
in the program material, the
displacement of each dome will
only be 1/3 of a single tweeter –
resulting in significantly reduced
distortion.
As we move further away from
the “sweet spot” on-axis listening
position with a single tweeter, the
highest frequencies will begin to
show early roll-off, as an inevitable
result of the natural behavior of a
conventional dome tweeter.
2. With reduced dome motion, it
becomes possible to implement
a lower crossover point. With
each tweeter handling 1/3 of
the total power load, the risk
of tweeter damage is reduced
significantly, despite the fact that the combined array
handles increased power due to the lower crossover
point.
This does not necessarily mean that a system with a
single tweeter cannot perform well or for that matter
measure respectably off-axis.
Fitting a dome with a properly designed wave guides
is the best way to ensure improved dispersion linearity,
so that the level of high frequency roll-off remains
more linear relative to on-axis response, resulting in
constant directivity characteristics, instead of a more
horn-loaded character, with significantly varying on
and off axis characteristics.
3. The low crossover point provides smoother
integration with the mid/woofers, because of the
more consistent dispersion characteristics of a tweeter
at the lower end of its frequency range. The triple
stacked tweeter configuration operates as a single
unit, well suited to greater power handling and a
smooth transition to the mid/woofers.
In a fully realized vertical tweeter array, waveguide
design is a key element. The goal of a triple-tweeter
configuration is to merge in the creation of a wide
horizontal listening window, while at the same time
controlling vertical directivity in order to prevent
reflected sound from the ceiling and floor from reaching
the listening position. Uniform sound dispersion in the
horizontal plane is crucial to the reproduction of the
stereo image and soundstage depth.
4. As a direct advantage of the lower crossover point,
the tweeter array acts as a single unit acoustically, with
virtually no phase shift near the tweeter’s resonance
frequency and crossover point.
The Miller & Kreisel S300 Series by M&K Sound
Bolted to the inside of
the front baffle, the
thick flanges of the
faceplate contribute
enhanced rigidity and
an ideal vibrationfree environment for
the three individually
bolted drivers.
designer should accept. The S300 tweeter array solves
this issue by using two high-impedance tweeters (top
and bottom), combined with one lower impedance
tweeter, pre-matching output levels prior to the overall
level adjustment that takes place in the phase-focused
crossover. A specially designed circuit fine-tunes the
now integrated triple tweeter configuration, allowing
to operate acoustically as a single unit.
With three dome tweeters stacked to form a finely
tuned system – the overall tweeter system can be
optimally integrated with the mid/woofers. The vertical
stacking of tweeters results in large surface area
for reduced pin-point dispersion character. Vertical
dispersion is reduced - while the horizontal dispersion
now shared by three tweeters is much wider and more
uniform at the height of tweeter array.
Reduced/controlled vertical dispersion and enhanced
horizontal dispersion are critical in generating a larger
sweet spot, while the vertical dispersion is controlled
to minimize reflections from ceiling and floor at the
listening position.
The faceplate wave guide is especially designed for
flush-mounting and the waveguide horn-loading of
each driver ensure more consistent high-frequency
response both on-axis and off-axis.
Dual 6.5” mid/woofers move air with a surface area
greater than that of a single 9” woofer, but with far
greater speed, precision, dynamic agility and power
handling, because two separate cones and motor
systems sharing the load run cooler and smoother.
Mounted in a steel bracket, the mid/bass units are
fitted flush to the front baffle for a solid, non-resonant
connection with only the cone surface exposed.
5. Placing multiple tweeters close together can
normally be a problem, due to frequency interference
(lobing) caused by the shorter wavelengths of high
frequencies. Often, this will cause irregular frequency
response variations,
which no serious speaker
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The Miller & Kreisel S300 Series by M&K Sound
The Miller & Kreisel S300 Series by M&K Sound
S300 1” Soft Dome
High Frequency tweeter
4. The precisely positioned pole flow resistor between
the rear chamber and felt pad carrier prevents any
captive air mass in the vented pole, so that there is
no undesirable loading of the dome. Without the pole
flow resistor in place, the dome would be loaded by
a captive air mass, restricting the driver’s downward
frequency extension and necessitating extensive
compensation in the crossover network.
Even at low levels, a dome causes compression of the
captive air mass within. The S300 tweeter ventilation
system is designed to ensure that there is no air mass
loading the dome and to achieve extended frequency
response for a smooth transition to the mid/bass unit.
The Miller & Kreisel aerodynamic air flow control
damping system offers an effective solution (see 1, 4
and 11.).
1. The rear chamber provides effective control of
impedance, resonance and compression.
5. T-yoke with aerodynamic vented pole structure and
conical lower half optimizes air flow/heat dissipation,
eliminating standing waves behind dome.
2/6. Dual magnets form an extremely powerful
magnetic system with effective control of stray
magnetic fields.
7. The multi-purpose copper ring mounted directly
in the motor system air gap eliminates 2nd order
harmonic
distortion,
reduces
intermodulation
distortion by separating the voice coil’s stray field from
the permanent magnet system’s field and contributes
3. The rear chamber is filled with highly absorbent
damping material for controlled air flow.
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11. The highly absorbent felt air flow resistor pad
prevents reflected sound (rear loaded resonances)
from returning to the dome.
to the loudspeaker’s linear impedance and linear phase
by reducing the voice coil’s natural inductance.
8. Vented aluminum voice coil and copper-clad
aluminum wiring ensures fast response and efficient
heat dissipation for high power handling. With
the voice coil suspended in low-viscosity ferrofluid
for enhanced heat dissipation, the S300 tweeter
delivers higher power handling with reduced power
compression.
12. Assembly gasket ring eliminates resonances
between motor system and dome assembly mounting
ring.
13. Dome assembly mounting ring ensures precision
mating of all parts.
9. The precision punched steel top plate covers
magnet system.
14. Dual polymer (silk and polyester) coated dome
with large suspension roll achieves ultra- fast transient
response for extraordinary clarity and accuracy.
10. The carrier keeps the felt pad precisely positioned
relative to the dome, while still allowing air to pass
around and access the larger cavities through the
magnet system’s vented pole piece and down to the
rear chamber.
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The Miller & Kreisel S300 Series by M&K Sound
The Miller & Kreisel S300 Series by M&K Sound
S300 6.5” Woofer
1. Soft steel T-yoke with vented pole piece minimizes
compression and distortion and evacuates captive air
mass behind dust cap for fast transient response and
minimal compression at large excursion. Flared edges
eliminate “turbulence” around the vents, further
reducing compression.
especially at large excursion. The ring also reduces
voice coil induction for more ideal impedance linearity.
3. Permanent magnet of high-grade strontium ferrite
ensures extreme thermal stability.
4. Top plate of soft steel with precision stamped
opening maintains tight tolerances for high power
potential at the coil. Tight tolerances ensure full
control of the driver’s damping factor.
2. Aluminum shorting ring “distortion killer”
eliminates 2nd harmonic distortion normally caused
by the stray magnetic field generated by a voice coil,
5. Miller & Kreisel custom made aluminum basket
employs open frame (7 mm flange) with rigid rib
structure for mechanical stability and full ventilation
under the spider and cone to eliminate power
compression and drastically reduce 3rd harmonic
distortion.
9. Glassfiber cone with polymer coating ensures
a smooth, controlled break-up pattern at higher
frequencies. The hyperbolic curvature of the cone
ensures that even the most miniscule motion of the
voice coil is transferred to the cone without loss.
10. Small glassfiber dust cap minimizes reflections
and break-up spikes at higher frequencies, providing
added stiffness and strength due to its close proximity
to the voice coil so that energy is transferred directly
to the cone.
6. Ultra-linear spider of Conex (compound of cotton
and heat-resistant polyfibers) contributes to lightningfast transient response based on large diameter and
multiple soft shaped rolls for free movement with
minimal internal progressive resistance. The spider
exhibits linear characteristics regardless of excursion,
while maintaining full control over voice coil motion.
7. Low mass, high conductance vented voice coil
on non-inductive glassfiber former reduces distortion
and minimizes compression under the dust cap for
fast “high Q” transient response. Professional highgrade wire is employed for extreme thermal stability.
Absolute linear travel up to ± 6 mm during transients
is achieved with a 32 mm coil diameter and 14 mm
coli length in a 5 mm gap.
8. Single-roll SBR rubber is optimized for minimal
mass, for use in a sealed enclosure with complete
control over cone motion. The low loss design achieves
the greatest possible cone surface area to fully exploit
available amplifier power.
(SBR = Synthetic Butyl Rubber)
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The Miller & Kreisel S300 Series by M&K Sound
The Miller & Kreisel S300 Series by M&K Sound
Triple-Layer Non-Resonant
Enclosures
The Miller & Kreisel S300
Series employs a complex,
box-inside-a-box construction with a non-resonant
layer of tar joining the
two cabinets to provide
constrained layer damping. All six sides employ
the same extremely rigid,
highly damped sandwich
construction. A stereo pair
consists of mirror-image,
dedicated left and right speakers for optimal imaging.
to reflections off the front
baffle of the cabinet and
vibrations transferred via
the baffle from one driver to the others are major
sources of uncontrolled,
disruptive sound.
These disturbances slur,
smear and conceal micro-details,
essential
low-level cues that help
our brains re-create the size and shape of the recorded
space in three dimensions, the precise placement of
voices and instruments and their distinctive timbres.
The Miller & Kreisel S300 Series achieves audibly superior results with thicker, denser panels utilizing constrained layer damping, i.e., laminating the exterior of
the base layer (inner cabinet) with a damping layer of
tar and then adding a third constraining layer (outer
cabinet). The S300 constrained layer sandwich dissipates vibration by absorbing kinetic energy and converting it into low-grade frictional heat effectively and
harmlessly.
The loss of the subtlest nuances sucks the life out of
music and movies, making it substantially more difficult for the audience to suspend disbelief and relax in
a “you-are-there” experience.
These issues are eliminated in the Miller & Kreisel S300
Series with 9 mm inner panels and 12 mm outer panels joined by a 3 mm layer of tar to effectively eliminate vibration. Because of its high molecular density,
a 3 mm layer of tar has energy absorbing properties
roughly equivalent to adding a further 6 – 8 mm of
MDF.
At best, conventional speaker cabinets may incorporate some kind of damping material simply glued to
one or more inner surfaces. This is known as extensional or free-layer damping and can be of some limited use in curbing vibration in thin panels.
Much of what is heard from most loudspeakers is actually unwanted sound produced by the cabinet as the
panels resonate in response to the acoustic signal generated by the drivers. Vibrating cabinet walls, standing
waves inside the cabinet, diffraction interference due
Tar and the two MDF panels of unequal thickness have
different resonant characteristics that help dissipate
resonances before they excite unwanted motion in the
cabinet panels.
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The M&K Sound design team experimented extensively with various materials with resonance-damping
properties, including rubber, silicone rubber, PVC (Polyvinyl chloride) foam, PU (Polyurethane) foam, before
determining that tar offers optimal acoustic and physical properties that will remain constant for many years.
driver. The surround features massive 6 drive units and
the dual 4 inch side-mid ranges provides the unique
ambience and makes the S300T a true tripole.
The Miller & Kreisel S300 Series cabinet construction
and specially designed drive units lower the mechanical noise floor drastically, bringing music and movies
to life with effortless realism, building on a rock-solid
foundation.
Employing the S300 woofer and tweeter on the front
baffle, total system timbre matching and voicing
closely matches the sound of the S300 front system.
The acoustic characteristics of the side and front firing
S300T drivers are carefully voiced to match the S300.
Innovative driver mounting techniques and the composite sandwich construction elevate the audio performance of the S300 to new levels.
Because all S300 Series loudspeakers are designed for
use with a subwoofer, the absence of deep bass allows
more compact enclosures that also contribute to their
extreme structural integrity.
To prevent transfer of vibrations from the inner cabinet
to the outer cabinet, no screws are used between the
two boxes.
The smoothly beveled edges of the front baffle reduce
diffraction interference and present a stylish face.
The dual sets of side-firing drivers 4 inch. incorporate a
small network to ensure that the side drivers closest to
the front tweeter do not interfere with the dispersion
of the front firing tweeter.
Behind the drivers, two carefully spaced sheets of
Polyethylene Terephthalate (PET) are fitted for effective break-up of internal standing waves to eliminate
sound passing through the mid/bass cones.
The Miller & Kreisel S300T tripole surround speaker
employs independent, isolated chambers for each
The angled side panels allow the side drivers to blend
seamlessly with the front drivers – for the perfect combination of diffuse and focused sound character that
makes M&K tripoles unique.
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The Miller & Kreisel S300 Series by M&K Sound
The Miller & Kreisel S300 Series by M&K Sound
The Miller & Kreisel
S300 Series
S300Monitor
The S300 Series employs sealed enclosures exclusively to avoid the boomy, muddy sound that is inevitable with bass reflex designs. Sealed enclosures are
the only way to achieve the finest transient response,
impulse response and frequency extension with the
The Miller & Kreisel S300 offers transparency and neutrality that surpasses far larger, more costly systems.
More compact than any monitor capable of rendering
such clarity and pinpoint detail, the ultra-smooth S300
ensures unsurpassed, effortless realism even in very
large rooms.
While a dedicated left/right mirror-image pair provides
optimal imaging for two-channel sources, the use of
an identical third speaker for center channel duties
guarantees a seamless, consistent soundfield in all dimensions.
Miller & Kreisel S300 is the ultimate demonstration of
our dedication to innovation and quality.
control and authority that have made M&K Sound the
Choice of Professionals for four decades.
The rear panel with terminals and crossover network is
screw-mounted into an inset frame for a tight seal and
firm connections.
MP300 On-Wall Monitor
Recognizing a growing demand for a high level of
audio performance from an unobtrusive, decorator-friendly enclosure, M&K Sound offers a shallower,
wall-mount version of the Miller & Kreisel S300.
By significantly reducing cabinet depth and revising
overall dimensions to ensure no loss of internal volume, M&K Sound has created an elegant, discrete onwall monitor that retains the audio quality of a full-size
compact loudspeaker.
The modest dimensions and extended placement options of the MP300 will appeal to the style-conscious
music/movie lover.
S300T Tripole
M&K Sound invented the tripole speaker configuration to do what no conventional monopole loudspeaker can. Side and/or rear mounted S300T’s enhance
the solidity and pin-point placement of rear channel
events such as fly-overs, voices, effects, music, etc., as
well as the realism of the ambient soundfield.
The S300T tripole, with Integral wall-mount bracket,
employs the same front drivers and crossover technology as the S300 monitor for a perfect acoustic match.
Independent, isolated side chambers house two 4”
drivers per side for optimal surround coverage to rival the performance of the huge array of speakers required in movie theaters.
See last page 19 for detailed
product specifications.
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The Miller & Kreisel S300 Series by M&K Sound
X Series Subwoofers
X10
Subwoofer
Combined with X Series Dual Drive Push Pull subwoofers, the S300 Series possesses the transparency, speed
and resolution that let the most critical audio professionals hear exactly what’s going on in the mix and
allow them to listen for hours on end with no hint of
fatigue. M&K Sound’s seamless, integrated feel from
top to bottom to immerse audiences in sound with
exceptional handling of dynamic changes in pace and
volume.
With dual 10” drive units, the X10 provides 156 sq. in.
of cone area to move and control air, equivalent to a
single 15” driver.
X12
Subwoofer
With dual 12” drive units, the X12 provides 226 sq. in
of cone area to move and control air or 40% more surface area than the X10 and 126% more surface area
than the X8, equivalent to a single 18” driver. X10 and
126% more surface area than the X8.
X8
Subwoofer
With dual 8” drive units, the X8 provides 100 sq. in.
of cone area to move and control air, equivalent to a
single 12” driver.
The Miller & Kreisel S300 Series by M&K Sound
Miller & Kreisel® S300 Series
Specifications
S300
Impedance:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ohm
Frequency Response:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Hz – 22 kHz, ±3dB
Crossover frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Khz
Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 dB
Maximum SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t.b.a
Recommended Power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 - 500 Watts
Finish:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black Satin
Dimensions (HxWxD):. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.5 x 13.4 x 13.0” / 39.5 x 34.0 x 33.0 cm
Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40.0 lb / 18.2 kg
S300T
Impedance:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ohm
Frequency Response:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Hz – 22 kHz, ±3dB
Crossover frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 Khz
Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 dB
Maximum SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t.b.a
Recommended Power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 - 400 Watts
Finish:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black Satin or White Satin
Dimensions rear side (HxWxD):. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13,5 x 13,5 x 7 inch / 34,5 x 34,5 x 18 cm
Dimensions front side (HxWxD): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13,5 x 8,8 x 7 inch / 34,5 x 22,5 x 18 cm
Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 lbs / 12 kg
MP300
“The X12 is among the best subwoofers
available, equally suited to motion picture
soundtracks and music.”
Widescreen Review magazine (USA), January, 2014
“This is one of the best subwoofers I’ve ever
heard in my room.”
Sound & Vision magazine (USA), April, 2014
Impedance:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ohm
Frequency Response:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Hz – 22 kHz, ±3dB
Crossover frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 Khz
Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 dB
Maximum SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t.b.a
Recommended Power: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 - 500 Watts
Finish:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Black Satin or White Satin
Dimensions top (HxWxD):. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15.5 x 13.4 x 6,3 inch / 39.5 x 34 x 16 cm
Dimensions bottom (HxWxD):. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15,5 x 13,4 x 4,7 inch / 39,5 x 34 x 12 cm
Weight: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 lbs / 12 kg
For full details on the Miller & Kreisel X Series
subwoofers, please visit
www.mksound.com/whitepaper/x-series
“The low end extension of the X12 is
astounding!”
www.hometheaterhifi.com February, 2014
Ver. 2 - Feb. 2014
18
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