Полочная акустика — Edifier MR4

The MR4 is a compact active studio monitor pair from Edifier with a 4-inch woofer, priced at USD 169.99 in the US and available in black or white. It is intended for home studios, content creation and desktop listening, and it includes a switch between a flat monitor setting and a music setting. It was launched around 2021.

Key specs that matter

A 4-inch woofer with a mica-added polypropylene cone is paired with a 1-inch coated silk dome tweeter in each MDF cabinet. Amplification is 21 W plus 21 W RMS. The response runs from 60 Hz to 20 kHz, and signal to noise reaches at least 85 dB A-weighted. The amplifier is a Texas Instruments TAS5713 Class D chip with built-in DSP. Inputs are balanced TRS, RCA and a front-panel 3.5 mm AUX socket, and there is a 3.5 mm headphone output on the front. The active speaker measures 140 x 228 x 197.5 mm and the passive one 140 x 228 x 184 mm, and the pair weighs 4.5 kg.

Engineering and use context

The MR4 has one active speaker containing the amplifier and controls and one passive speaker connected to it by speaker cable, which explains the difference in depth between the two cabinets. A single knob on the front controls power, volume and mode, with a long press switching power and a double click changing mode, and an indicator shows red for Monitor mode and green for Music mode. Monitor mode keeps the response flat for mixing, while Music mode applies a tuning intended for general listening. Adding mica to the polypropylene woofer cone increases its rigidity, according to Edifier. Its passive crossover is second-order, built from inductors and capacitors. The RCA inputs work at the nominal consumer level of -10 dBV, while the TRS jacks are 6.35 mm balanced connections. The balanced TRS inputs accept signals from audio interfaces, which reduces noise pick-up on longer cables. A headphone socket on the front makes it easy to change to headphones, and the front AUX input takes a phone or laptop without changing the rear connections. The MDF cabinets are finished in black or white.

Pairing

An audio interface connects through the balanced TRS inputs, a computer or mixer through RCA, and a phone through the front AUX socket. For home studio use, the speakers stand on a desk or on isolation pads at ear height, in a small room of up to about 20 m2. Deep bass below the rated range needs a subwoofer for full-range monitoring.

Alternatives

The Edifier MR5 is a larger three-way active studio monitor with a 5-inch woofer, a 3.75-inch midrange and a 1-inch silk tweeter, rated at 110 W with XLR and Bluetooth 6.0 inputs.