H.E.A.D. High End Audio Devices
Loudspeaker
High End Omnidirectional
H. E. O. LO.LOudspeaker
H.E.O.LO.

H.E.O.LO. is an innovative loudspeaker, developed to overcome the
typical limits of traditional acoustic transduction devices.
The H.E.O.LO. concept is based on the ability to completely
dissimulate the presence of the loudspeakers themselves , so that the
sound are not perceived as coming from them but from from the place
in the space where each instrument or performer was originally
placed, regardless the listening position. The result is an acoustical
scene that tightly approximate the musical event as it was permormed
during the recording session and that can be appreciated everywhere
in your listening room.
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We have spent months in studying and tuning all the components to
find the right solution that fulfills all our strict sound requirements.
The result is the H.E.O.LO: concept that is the foundation of all our
loudspeakers and that makes our systems unique and inimitable.
H.E.O.LO.
The high frequency dispersion problem
The heolo key components
High frequency absorber
Ring Diffusion Lens
Protection Tissue
Dome Tweeter
H.E.O.LO.
The high frequency dispersion problem
High frequencies are very well perceived in front of a
standard loudspeaker
.. But their level progressively diminishes as
you move aside
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Frequency response is seriously affected
by the listening position
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….. And they are pratically canceled if you
move out of axis
H.E.O.LO.
The high frequency dispersion problem
The H.E.O.LO. solution
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The
Ring
Diffusion
Lens corrects
The
acoustic
Absorber
the
theoff-axis
on-axisresponse
enphasis
80
Frequency response is now flat
regardless the listening position
H.E.O.LO.
The high frequency dispersion problem
The H.E.O.LO. solution
AN unbelievable result!
Frequency response is
flat within ±2.5dB even
if you move around the
HEOLO
H.E.O.LO.
Other design peculiarities

Phase coherency:
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H.E.O.LO. solution has another significant advantage compared to a standard
front-firing loudspeakers. The tweeter positioning on the top side of the box has
been calculated taking into account the phase emission plane of the woofer that is
placed immediately underneath: the result is a virtually 0 degree phase mismatch
beetween the ways that leads both to a exceptional step and pulse response and to
a seamless cross-over response.
Bass response:

The bass response of the Heolo is really astonishing compared to the very small
dimensions of the loudspeakers, combining extension and dampening. This is made
possible by the special box design where dimensions, internal stiffening braces and
dampening material have beeen carefully designed and tested.
The downfiring reflex port is part of the incredible bass response of the HEOLO and
is conceived to keep the turbulence to the minimum and to obtain a bass response
not very influenced by the speaker location inside the room, if you compare it to
other system’s behavior.
H.E.O.LO.
Practical benefits

3-D:
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Listening position indepent:
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The best listening position is not confined in a narrow space in your room. You can
listen at the HEOLOs everywhere in the room without significant sound variation:
the sound stage remains stable regardless your position.
Design:
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The sound stage is wide, spanning well beyond the space inside the loudspeakers,
gaining a 3-D component tightly resembling a real event perception
The HEOLO dimensions are very small so that they can fit almost in any room. The
very classy design is also another distinctive factor of the HEOLO that make them
more than a loudspeaker: they become part of your interior design.
Flexibility:

HEOLO are designed to simply reproduce the signal provided at their connectors no
matter what kind of music you are used to listen. The absolute neutrality of the
HEOLOs make it possible to always have the best performances, placing your focus
on the musical event: finally music!
From the Craftman hands
An essential characteristic of all our products is
that they are completely handcrafted. The
chassis, the crossover, the cabling, the
assembling, the finishing are all made by
specialized craftsmen.
Small finishing differences and imperfections are
not due to poor quality: they give you the evidence
that every single piece is handmade, not a mass
production result.
From the Craftman hands
During the manufacture of the H.E.O.LO., the human
intervention makes it possible that every relevant
aspect of the construction process is verified
step-by-step and every single part is refined,
leading to a reliable and absolutely constant
result.
On each single H.E.O.LO., for instance, the drivers
are pre-selected and the inevitable differences
are completely compensated with slight
modifications on the crossover network.
H.E.O.LO.
The added value of our solution
Price/Quality Ratio
The H.E.O.LO. Selling price, in spite to their unique
characteristics and to the handcrafting construction,
compares to the price of common mass production
devices.
Individual testing
An individual listening session is part of the production
process of each single H.E.O.LO.. Each loudspeaker,
after a technical test, is passed through a listening test,
using a selected program including several musical
genres using a standard setup. This phase is the one
that over any other make it sure that the final result will
always match the customer expectations.
H.E.O.LO.
The added value of our solution
SERVICES and CUSTOMER CARE.
Thanks to the complete control of the overall
manufacturing process, we can provide
product customisation according to customer
needs, in order to accomplish special requiest
in terms of finishing, adaptation to particular
listening environments, matching to driving
amplifiers, integration into multichannel
systems.
Magazine reviews..
…… the scene widens and
gains that 3-d component that a
lot of loudspeaker
manufacturers chased
ineffectively for a long time….
Audiophile clubs..
… ci sono
dei
diffusori
pavimento
…..Una
notale
di H.E.O.L.O.,
merito va fatta
anche
ad unda
assetto
che
di 88,5db
di sensibilita’
cheprototipo
oserei (Heolo)
sto ascoltando
questi giorni,
un diffusore
dalle
caratteristiche sonore marcate
con unaun
predilezione
definire….camaleontici!
Mai ascoltato
diffusore
per
la semplice
ricostruzione
Ogni
cosi’
da spaziale
pilotare davvero
e che siincredibile.
trova a suo
agio
strumento
e’ minuziosamente
riprodotto
nel
con tutto….persino
con soli
3 watt ine collocato
un ambiente
suo spazio
ben definito,
mai vicino alediffusore!
Una
molto trattato
acusticamente
di 25mq!!!
piccola torre che sparisce come un minidiffusore e sa fare
Ho passato 2 settimane in compagnia di questo
di meglio nella ricostruzione spaziale, con tutti i pregi di un
splendido gioiello sonoro, non lo avrei nemmeno
estremo inferiore che non fa rimpiangere sistemi ben piu’
voluto restituire tanto mi
era piaciuto, tanto mi aveva
grandi.
rapito la sua estrema musicalita’.
Hi-fi specialists..
……soundstage and clarity are just
astonishing, Heolo are able to transmit
emotion almost like no others……
Mr. uwe keursgen
Fine audiophile devices
www.spreeaudio.de
Thanks for your interest on our
products!
H.E.O.LO.
High End Omnidirectional Loudspeakers
by
H.E.A.D
High End Audio Devices
www.heolospeakers.com