The Pro-Ject Speaker Box 3 E Carbon sits above the standard Speaker Box 3 E in Pro-Ject’s compact speaker range, introducing a cutting-edge carbon fibre glass composite mid/bass cone in place of a conventional woofer. Developed by Pro-Ject’s engineering team in Austria, the Carbon variant delivers measurably improved impulse response and a more precise stereo image, while retaining the same compact footprint that makes the Speaker Box 3 E series ideal as a desktop monitor or compact home cinema satellite.
Carbon Fibre Driver Technology
The defining upgrade over the standard Speaker Box 3 E is the 3-inch carbon fibre glass composite bass/mid driver. Carbon fibre composite cones offer a high stiffness-to-mass ratio compared to conventional paper or polypropylene cones, reducing unwanted flexing across the driver’s operating range. The result is an audiophile flat frequency response from 83 Hz to 20 kHz, with tight, controlled bass playback assisted by a rear-firing bass reflex port. High-frequency duties are handled by a 0.75-inch silk dome tweeter, chosen for its natural, open character without harshness.
Cabinet and Build Quality
The non-resonating MDF cabinet keeps coloration from the enclosure to a minimum, allowing the drivers to operate cleanly. At 175 x 119 x 152 mm (HxWxD) and 1.69 kg per cabinet, the Speaker Box 3 E Carbon is compact enough to sit on a desktop or shelf without dominating the room. The Walnut veneer finish adds a warm, natural texture suited to both modern and traditional interiors. Gold-plated speaker terminals on the rear ensure a reliable, low-resistance connection to an amplifier. Magnetic speaker grills in black are included, offering easy removal and a clean finish either way.
Flexibility and System Matching
Pro-Ject specifies a recommended amplifier power of 10 to 100 watts, making the Speaker Box 3 E Carbon a natural partner for compact integrated amplifiers such as the Pro-Ject Stereo Box S3 BT or MaiA S3. The 4-ohm nominal impedance and 85 dB sensitivity mean a modest amplifier with reasonable current delivery will drive these speakers to satisfying levels in typical domestic listening environments. An optional wall mount bracket is available separately, giving additional flexibility for home cinema or desktop installations.
Finish and Presentation
The Speaker Box 3 E Carbon is supplied as a pair in Walnut veneer, with the carbon fibre woofer visible through the open baffle. The warm wood grain aesthetic suits both audio-focused and design-conscious interiors. The speakers are sold as a stereo pair, with grills included. Satin Black and Satin White finishes are also available as separate listings.
