Полочная акустика — Edifier Airpulse A300

The Airpulse A300 is a powered bookshelf pair from Edifier's Airpulse label that sits above the A200 in cabinet size and amplifier output. It is supplied as an active master speaker plus a passive partner, and its treble unit borrows the working principle of the tweeter fitted to the Airpulse 7001 near-field monitor.

Key specs that matter

The treble is handled by a horn-loaded ribbon made from aluminium 65 mm long and 0.12 mm thick, while a 6.5-inch aluminium cone mid-woofer with a neodymium motor and underhung design covers the rest. Onboard amplification supplies 70 W plus 70 W to the woofers and 10 W plus 10 W to the tweeters. The stated frequency range runs from 40 Hz to 40 kHz, and noise sits 90 dB(A) or more below the signal. Sources connect through AUX, a professional balanced input, USB, optical, coaxial and Bluetooth 5.0 with aptX on a Qualcomm CSR8645 chipset. Each enclosure is 225 mm wide, 385 mm tall and 340 mm deep and weighs 24 kg net, or 29 kg in its packaging, and the power supply accepts 100 to 240 V AC.

Engineering and use context

The ribbon sits between two large neodymium magnets and carries the signal current itself, so the strip acts as both voice coil and diaphragm, and it is fed through a transformer. In the woofer, an edge-wound voice coil of copper-clad aluminium ribbon wire, 50 mm across, drives the cone. Signal processing runs on a 16-core XMOS chip of the xCore200 family, and three Texas Instruments TAS5754 Class D chips power the drivers - two for the left and right woofers and one for both tweeters. A Texas Instruments PCM9211 receiver handles the digital inputs, and the USB port is UAC2 compliant for 192 kHz playback from a computer without extra drivers. The cabinets use 25 mm MDF lined with 36 mm of absorbent material and are finished in cherry veneer under satin lacquer.

Pairing

Input sensitivity is listed as 700 mV for AUX, 1150 mV for the balanced socket, 550 mFFs for USB and 500 mFFs for the optical, coaxial and Bluetooth paths. A laptop, CD transport or TV can therefore connect digitally with no outboard converter, while a record player needs its own phono preamplifier. Bass, treble and volume knobs sit on the rear panel, and a wireless remote is included together with RCA, optical, USB, speaker link and mains cables.

Alternatives

Edifier's Airpulse A200 is the smaller sibling, built around a 5.5-inch woofer with 55 W of bass amplification per side.