Напольная акустика — Aiwa Пerix

The Perix is a compact two-way satellite speaker from AKu Audio of Athens, Greece, and the core of a system the company builds for home cinema and desktop audio in 2.1, 5.1 and 7.2 layouts, plus custom configurations. AKu Audio took shape as a company in 2014, and its name is the Greek word for listen, while the model name refers to sound that surrounds the listener. Fitted to its optional floor stand, the satellite becomes a slim floorstanding speaker with the tweeter placed at ear height for a typical seated listener.

Key specs that matter

Each satellite pairs a 5.5 inch midwoofer, with a coated fiberglass cone, die-cast aluminium chassis and low-damping SBR surround, with a 0.75 inch damped silk dome tweeter built for high power handling and wide dispersion. The passive crossover divides the signal at 3 kHz with second-order Butterworth slopes. AKu quotes 140 Hz to 22,000 Hz within 3 dB, 90 dB sensitivity at 2.83 V and 1 m, a nominal impedance of 3 ohm, a maximum level of 106 dB. AKu suggests 50 to 150 W RMS of amplification. The bare cabinet is 320 mm high, 222 mm wide and 132 mm deep and weighs 4.3 kg, while on the floor stand the speaker stands 1200 mm tall and weighs 8.65 kg. Signal connects through a 6.3 mm jack.

Engineering and use context

Stacked MDF plates form the cabinet, which has two internal chambers and non-planar inner surfaces, and the left and right units are mirror images of each other. Polypropylene capacitors, air-core inductors and Zobel networks make up the crossover. Since the satellite is not meant to reach deep bass, AKu proposes a 150 Hz high-pass filter with a 24 dB Butterworth slope and hands the low end to a Perix subwoofer. The 2.1 subwoofer combines a 10 inch aluminium long-excursion driver with a 10 inch passive radiator and a 250 W amplifier, reaching 27 Hz, and the 5.1 to 7.2 version uses two opposed 10 inch paper drivers in push-push with 500 W, reaching 37 Hz, both within 6 dB. Each is powered by a custom AKu-Hypex Ncore module with DSP, three presets and balanced XLR, RCA and high-level inputs. Besides the floor stand, the satellite fits a desktop stand or a wall bracket fixed with three screws and adjustable on two axes, in Primary Red, Ivory Black or Titanium White.

Pairing

The nominal impedance is low, so any receiver or power amplifier used here must be rated to drive it. For multichannel use the Perix center adds two midwoofers in a three-chamber cabinet, with a 6 ohm rating, a 50 to 200 W range and a 109 dB maximum level.

Alternatives

The AKu Audio Talos is the brand's active three-way floorstander with a 12 inch aluminium woofer, two 7 inch midrange drivers, a beryllium dome tweeter and 2200 W of built-in amplification.