Apertura Audio STELA
Image source — © Apertura Audio
Model name
STELA
Frequency Response low +/- 3dB (Hz)
40
Frequency Response high +/- 3dB (Hz)
30 000
Sensitivity (dB at 1 W/1m)
88
Impedance (Ohms)
8
Power amplifier requirements (W)
N/A
Has internal amplification
N/A
Internal amplification power (W)
N/A
Size (sm)
23.0 x 31.0 x 97.0
Weight (kg)
19
Official link
The completely new filters use high-end capacitors. Thanks to the woofer design, which is a hybrid of a transmission line and a phase inverter, the lower limit of the frequency range has been reduced. The sensitivity of the Apertura Audio Enigma MkII is the same as that of the previous generation Enigma: 94 dB.
The Adamante acoustic load principle is similar to that used in Onira and Enigma. This is a hybrid load that mixes an acoustic line and a bass reflex. Due to the large diameter of the port located under the speaker, airflow noise is reduced, interaction with the room is improved and non-linearity is reduced.
The acoustics configuration consists of a two-lane structure. The midrange/woofer driver has a diffuser made of polypropylene and has a braided shape. Polypropylene fibers are woven like fabric, similar to carbon fiber and Kevlar diffusers. The drivers are connected inside the acoustics with a silver-plated oxygen-free copper cable in Teflon insulation.
Like all Apertura speakers, Forté is equipped with a passive crossover using the patented "DRIM" technology. This type of crossover uses three types of filters – with attenuation of 6, 12 and 24 dB per octave. Phase matching is ensured over the entire operating range, as well as minimization of intermodulation distortion.
The exquisite Apertura Armonia Evolution will perfectly fit into any interior, from classic to modern. The Apertura Armonia Evolution has a frequency response from 37 to 30,000 Hz with an error of 3 dB. The speaker sensitivity is 87 dB, the resistance is 8 ohms, and the acoustic design is a bass reflex.