Butikk Apertura Sensa (demopar)

Firmaet bak dagens Apertura produkter heter Stentor SAS og ble grunnlagt i 2010. Selve Apertura produktlinjen går 38 år tilbake i tid (siden 1983). Konstruktøren er ingen hvem som helst. Christian Yvon er blant annet kjent for sitt banebrytende arbeid innen delefilterteknologi og lanserte det såkalte DRIM-delefilteret i 1978. Han har jobbet for både Goldmund, Focal og Sonus Faber. Hans Apertura høyttalerkonstruksjoner er da også veloverveide ned til hver minste detalj.

Sensa er franske Apertura sin minste gulvstående høyttalermodell. Det er en stuevennlig høyttaler med god homogenitet i hele sitt frekvensområde. Demoparet som selges er i svart pianolakk og høyttalerne fremstår som nye. Annonsebildet viser Stela til venstre og Sensa til høyre. Sensa er tilgjengelig for demonstrasjon.

Listepris: NOK 39 375,-
Demopar: NOK 26 000,-

Produktside: https://apertura-audio.com/en/products/sensa/

Design: 2-veis bassreflekskonstruksjon (med refleksport bak)
Diskant: 25mm ringradiatordiskant
Mellomtone/bass: 160mm 'isotactic matrix' element
Frekvensrespons: 40 Hz - 40 kHz
Delefrekvens: 3,8 kHz
Nominell impedans: 8 Ω
Sensitivitet: 87 dB/W/m
Dimensjoner (HxBxD): 86,4cmX17cmX24cm
Vekt: 14 kg

Produsenten skriver:

DRIVE UNITS

• A 16cm mid/woofer with an « isotactic matrix », cone like in Armonia, Edena and their big sisters. This material made of woven polypropylene strips, combines stiffness, lightness and good damping properties.
• The long moving coil allows a long linear excursion. Which is quite amazing for a speaker of this size.
• This drive unit comes also with an original suspension, featuring radial stiffeners that lower the interferences.
• High frequencies are reproduced by a tweeter, member of the famous “Ring Radiator” family.
• In addition to its unusual profile, it has a bullet shape waveguide and a rear damping chamber. The result is an extended frequency response, both at the top end (to above 40kHz), and at the bottom end to allow easier coupling with the bass/mid range drive unit.

CROSSOVER

• Proprietary « DRIM » structure with a triple attenuation slopes
• This technology cancels intermodulation on each sections of the crossover, which result in unsurpassed Clarity and finesse
• Each set of drive units (tweeter and mid/woofer) are individually measured and crossover values adjusted according to these sets measurements.
  Hand wiring on a 140 µm copper printed circuit board.
• Optimized crossover structure to avoid magnetic interference between components

ENCLOSURE

• The main goal, in this new cabinet design, was to limit vibration propagation on the most critical panels (especially on the back panel).
• High thickness panels (18mm)
• Internal multi-cavity framework with 3 bracing panels to stiffen the structure and create very specific areas where damping materials can be applied
• Bass reflex loading with an optimized double resonator. This specific configuration allows deeper low frequencies reproduction.
• Importance is given to damping treatment to cancel any standing waves. We are using 2 different types of dumping materials.

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