Полочная акустика — Edifier R990BT

Edifier markets the R990BT as a 2.0 active multimedia speaker system - a pair of small two-way boxes with amplification, a Bluetooth receiver and two analogue inputs built in. It sits below the R1280 models in the company's range of powered bookshelf speakers, and the US list price is USD 109.99 for a black pair.

Key specs that matter

Total output is 24 W RMS, split as 12 W + 12 W. Each box uses a 1 inch silk dome tweeter and a 4 inch long-throw mid-low driver. The quoted frequency range runs from 60 Hz to 18 kHz, and Edifier rates the S/N figure at 85 dB(A) or better. Inputs comprise Bluetooth plus Line In 1 and Line In 2. Line In 1 expects 500 mV and Line In 2 expects 700 mV, each with a 50 mV tolerance, and the Bluetooth path is specified at 450 mFFS with the same margin. The Bluetooth receiver is version 5.4 and handles the SBC codec only. A single cabinet is 140 mm wide, 226 mm tall and 197 mm deep, while the whole set weighs 3.44 kg net.

Engineering and use context

The cabinets are made of MDF, which Edifier chose to limit resonance and distortion in the enclosure. A calibrated, flared reflex port supports the output of the mid-low driver at the low end. Operation is handled by a knob and a button on the rear of the powered speaker, and a remote control for volume and playback is packed with the pair. The EDIFIER ConneX mobile app adds source switching, playback control and access to the user manual. Three preset equaliser curves are stored for music, film and gaming, and the app lets the owner build and save a custom curve instead. The two RCA inputs can stay connected to separate devices at the same time, so switching between them needs no replugging. An RCA to RCA lead and a 3.5 mm to RCA lead come in the box.

Pairing

With its modest output, the R990BT suits a desk, a bedroom or a small shelf system rather than a large living space. A computer, TV or phone with a headphone output connects through the supplied mini-jack to RCA lead, and a CD player, a record deck with a built-in phono preamp or an external DAC can use the second RCA pair. Phones, tablets and laptops without a spare analogue output can stream over the wireless link instead, and the powered speaker switches between Bluetooth and the two wired sources. There are no optical, coaxial or USB inputs, so a TV with only a digital audio output needs a converter.

Alternatives

The Edifier R1280DB steps up within the brand's bookshelf range, with 21 W per channel, Bluetooth 5.1 and optical plus coaxial inputs.