Hybrid Audio Technologies mirus series Installation & Reference Manual Download Page 4

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Your Mirus system contains
speaker drivers and a
tweeter passive crossover
network that were
developed and assembled
with a significant effort in
research and development,
materials science
engineering, an exhaustive
level of sampling and
prototyping, real-world
testing, and obsessive
attention to detail.
The specifications and
parameters of your Mirus
coaxial system is detailed
on these pages.

Midbass Attributes

Mirus M4, M5, M6, M57, & M69

Frame

Stamped and powder-coated steel. The basket is
a high-quality stamped steel design, which plays a
critical role in aligning the voice coil in the magnetic
circuit. The frames are proprietarily tooled by Hybrid
Audio to allow for the inverted mounting of the
surround, discussed in detail below. The stamped
steel frame provides adequate clamping force in
relation to its mass, and ensures that the voice coil
remains centered in the former.

Cone

Pressed paper with water proof treatment. It is
widely acknowledged that pressed paper cones
are the best marriage of lightness, stiffness, and
ability of the cone to damp unwanted cone and
edge modes and resonances (read: distortion). The
paper cone, known for its excellent sonic attributes,
is water proof, thanks to a polymer developed
exclusive and proprietarily by Hybrid Audio
Technologies. The treatment does not change the
look and parameters of the driver like old-fashioned
“glossy” polymers which added an appreciable
amount of moving mass and significantly colored
the sound. No, the Mirus cones look like any
“normal” paper cone, but in reality are likely the
only high-performance water proof paper cone car
audio speaker systems on the market. The treatment
protects the cone from periodic drips (such as inside

a door panel), as well as accidental splashes to the
front of the cone. On the hybrid-audio.com website,
we have hosted a video of an actual water-proof
demonstration where we pour two liters of water
over an Imagine coaxial (sibling to the Mirus coaxial
that uses the same cone topology), and then
connect it to a musical source. That video may be
viewed at:

http://hybrid-audio.com/imagine/

Tweeter Pole Piece

Cast ABS plastic. The tweeter pole piece is ABS and
effectively places the tweeter forward of the cone,
centered, for optimal operation. The pole piece
contains a unique swiveling feature to allow for
aiming of the tweeter.

Surround

Inverted high-loss rubber surround. The inverted
high-loss rubber surround (in concert with the
spider, detailed below), helps to provide the
compliance and “restorative force” needed for
the Mirus drivers to play effectively into the
lower coaxials, and perhaps even upper subbass
frequencies (depending on in-car cabin gain and
other factors). You’ll also know a Hybrid Audio
midrange and coaxials design by its inverted
surround; this design feature allows for the use of
a smaller height grille, better clearance with OEM
panels, and more flexibility in mounting options.
The inverted surround is a Hybrid Audio exclusive in
automobile loudspeakers.

Spider

Phenolic fabric and tinned tinsel leads. The spider
is the brownish/yellow corrugated (rippled) fabric
that attaches the cone and voice coil. The spider for
the Mirus designs was the subject of a considerable
amount of our research and development. The
spider is a phenolic symmetrically-rolled fabric
which provides excellent restorative force during
excursion. The tinsel leads are connected to real
epoxy PCB, not flimsy cardboard, unheard of in the
price range of Mirus.

Voice Coil and Motor System

The voice coil used in the Mirus coaxials is a 2-layer
aluminized copper wire coils on a round former.
An “overhung” voice coil was selected to improve
sensitivity while still keeping distortion to a
minimum.

Continued on following page...

Mirus

Coaxial

Systems