Overview: The Definitive
Technology Mythos ST SuperTower is a tower loudspeaker with a built-in powered
subwoofer. The Mythos ST SuperTower design offers a truly full-range loudspeaker that combines the
accuracy, imaging, and detail retrieval of a monitor speaker with the depth,
dynamics, and bass output a separate powered subwoofer into one visually
attractive, small-footprint enclosure. The Definitive Technology Mythos ST SuperTower utilizes a 1-inch pure aluminum
dome for extended highs and two 5-1/4 inch high-definition cast-magnesium basket
midranges for smooth sounding vocals. The Mythos ST SuperTower also features a
"racetrack" shaped carbon fibre active driver powered by a built-in 300-watt
Class-D amplifier and pressure-coupled to two "racetrack" shaped low-bass
radiators equal to the surface area and bass output of a 15-inch woofer but with
far greater control, definition and speed; eliminating the need for a separate
subwoofer. The ST SuperTower features a and-polished gloss aircraft-grade
extruded aluminum enclosure with proprietary damping technologies and polished
granite base to ensure total rigidity and stability.
The Mythos ST SuperTower has been engineered
for music listening and home theatre enjoyment.
Built-in Powered Sub
BDSS Technology: Definitive Technology's Balanced Double
Surround System (BDSS) driver offers a wide-bandwidth accurate frequency
response, broad dispersion, low distortion, and detail retrieval; so you hear
more the music with greater accuracy and enjoyment. BDSS drivers incorporate the
following design features.
- Balanced Double Surrounds: The speaker's balanced
double surrounds support the cone at two points to provide better mechanical
stability for longer, more linear excursion, and improved damping to
suppress parasitic cone resonance.
- Mineral-Filled Polymer Cone: The loudspeaker features a
deeply drawn mineral-filled polymer cone engineered using sophisticated 3D
modeling techniques for wide range performance.
- Waveguide: The cone's integrated waveguide smoothes
off-axis response for broad, even dispersion and better imaging.
- High Temperature Voice Coil: The driver's high
temperature, oversized, lightweight vented voice coil offers improved power
handling and quick transient response. The voice coil is also lengthened to
increase linearity and lower distortion.
- Magnet Structure: The driver's magnetic system is
optimized by finite element analysis to maximize magnetic flux in the gap
for high efficiency and linear excursion.
- Die-Cast Alloy Basket: The die-cast alloy basket
minimizes ringing and vibration while the open area minimizes back wave
High Definition Midranges: The Mythos
ST SuperTower contains a D'Appolito array consisting of two high-definition
5-1/4 inch drivers surrounding a 1-inch dome tweeter housed in an acoustically
isolated sealed enclosure. The drivers feature Definitive's patent-pending Balanced Dual Surround System (BDSS) technology
that supports the speaker cone at both the inner and outer edges for longer,
more linear excursion, greater clarity, and finely textured inner detail. The
driver baskets are die cast Aluminum.
Pure Aluminum Dome Tweeter: The
tweeter is a pure aluminum dome, which has been heat-treated to relax the
crystal structure and then coated with a ceramic to produce extended, smooth
Magnetically Shielded: The Mythos ST SuperTower is magnetically
shielded for safe placement near your television.
Break-In Period: The Mythos ST SuperTower will sound good
right out of the box; however, an extended break-in period of 40-60 hours or
more of playing is required to reach full performance capability. The break-in
period allows the suspensions to work in and results in full bass, a more open
midrange, and smoother high frequency reproduction.
Built-in Powered Sub
Powered Subwoofer: The 6 x 10-inch "racetrack-shaped" polymer/carbon composite subwoofer is powered by a
built-in 300-watt Class D amplifier and pressure-coupled to two 6 x 10-inch
"racetrack-shaped" planar low-bass radiators for a total bass radiating area
greater than a 15-inch woofer; but with far greater control, definition, and
speed. A pair of ST tower loudspeakers is like having two 15", 300-watt powered
subwoofers in your room without taking up anymore floor space. The result is
bass that is deep, powerful and impactful while at the same time having tight,
controlled, and accurate response. The built-in powered subwoofer also provides
the following features.
- Auto Turn-On: The Mythos ST's built-in active power subwoofer
section must be plugged into an electrical socket using the supplied 10' AC
cord. The Mythos ST has a special circuit which automatically turns the
powered subwoofer section on when a signal is fed to the loudspeaker and
turns off when there is a no signal (for 1-hour).
- LED: An LED on the back-panel will light up when a signal is
sensed and the amplifier turns on. The LED will automatically turn-off when
there is no signal (for 1-hour).
- Built-In Crossover: Definitive's engineers have perfectly adjusted the crossover and phase
between the subwoofer and main speaker sections of the Mythos ST SuperTower
to achieve seamless blending and life-like sound.
- Note: Please not that there are no controls to vary the
crossover points or phase because these have been factory calibrated and
set to provide perfect blending.
- Level Control: The Mythos ST SuperTower has a bass-level control
which allows you to tune the output level of the built-in powered subwoofer
section to match your room and personal listening preferences.
- Protection Circuit: To prevent accidental damage to the subwoofer
built-in the Mythos ST SuperTower from overdriving the system, the built-in
powered subwoofer section features an internal overload protection circuit,
which will turn the powered subwoofer off or down when overdriven or
overheated and will then resume normal operation after a few minutes.
Curved Extruded Aluminum Enclosure: The
enclosure is extruded aluminum with internal ribs for stiffening purposes.
Strips of damping material are adhered to the inside of the extrusion to
suppress ringing. The baffle is "Polystone" a dense and non-resonant
mineral-filled polymer material that is slightly oversized and is force-fit into
the extrusion "mouth" to prevent the aluminum from ringing. The midrange/tweeter
array is isolated from the woofer enclosure by two pieces of MDF. Both woofer
and mid/hi enclosures are sealed. The slim,
curved shape of the enclosure reduces diffraction contributing to the ST's
broad imaging and deep soundstage.
Speaker-Level & Line-Level Connections: The Mythos ST SuperTower is equipped with a pair of
gold-plated, 5-way binding posts to attach your receiver's speaker wire and a
gold-plated, mono-RCA/LFE input to connect your receiver's LFE/subwoofer output.
Granite Base with Adjustable Feet: The
granite base combined with the heavy Toroidal transformer mounted on the bottom
plate of the loudspeaker's enclosure provides a low centre of gravity for
superior stability. The base incorporates 5 adjustable-height metal feet that
may be fitted with either smooth furniture glide tips for wood and ceramic
floors, or spikes for carpeted floors.
Applications: The precise accuracy, wide-range response, and high impact dynamic range of the
Mythos ST allow you to use the speaker in most home audio/video system's
ranging from a 2-channel music-only to a 7.1 channel home theatre system.
When used as a stereo pair, simply connect it with speaker wire as one would any pair of speakers; there is
no benefit to using the low-level LFE inputs. When using the ST in a
multi-channel system there are two options.
- Connect speaker wire as in a stereo system; set bass management as Front=Large, Subwoofer=None
- In addition to speaker wires connect low-level cables from the LFE/Subwoofer output of the
receiver/processor to the LFE inputs of the ST (Y connector is usually
required). Set bass management as Front=Large, Subwoofer=Yes. The benefit of
this hook up method is that one now has the ability to control the level of
the LFE channel relative to Front L&R bass.
Placement: The Mythos ST SuperTower loudspeaker can be used as a Main
or Surround speaker.
- Fronts: When used as a front main speaker, you should create an
equilateral triangle between the speakers and your listening area. The
speakers should be angled toward the centre of the listening position for
brighter, clear, sound with a sharper focus and a more solid central image.
Pointing the speakers straight forward, parallel with each other , will
result in a warmer less sharply focused sound. To get the best possible
imaging and most even tonal response, avoid placing the speakers less than
3-feet (1-Metre) from your room's walls.
- Surrounds: When used as rear or surround speaker, the Mythos ST may be
located on the side or behind the listeners. When used on the sides, take
care never to locate the speakers forward of the listeners. When the
side/rear speakers are close to the listening position, do no aim the
speakers directly at the listeners.