B&W 707 S3
B&W 2-way bookshelf speaker with carbon dome tweeter and Continuum cone, designed to deliver precise sound in a compact format.
Description
The 707 S3 is a 2-way bookshelf speaker from B&W, belonging to the 700 Series. Its compact format allows it to be installed in small spaces while maintaining a high standard of sound quality, thanks to a combination of drivers developed specifically for this range.
The speaker features a 25 mm carbon dome tweeter with a resonance threshold reaching 47 kHz, a point that pushes artefacts capable of affecting the precision of the sound image far into the treble. The 13 cm mid-woofer uses a Continuum cone, a composite construction designed to smooth the driver's behaviour and avoid the breaks in delivery that can affect sound neutrality. The bass-reflex cabinet adopts a curved baffle and individual pods for each driver, a layout that limits the colouration inherent to the cabinet.
In terms of performance, the 707 S3 offers a sensitivity of 84 dB /1W /1m, an impedance of 8 ohms (4 ohms minimum) and a frequency response of 45 Hz to 33 kHz at -6 dB. It accepts a power handling of 100 W RMS and pairs with amplifiers delivering 30 to 100 W RMS at 8 ohms, with distortion kept below 1% between 110 Hz and 22 kHz at a level of 90 dB.
This model is aimed at those seeking a bookshelf speaker capable of precise, detailed sound reproduction without requiring a large installation space. Its compact format and moderate power requirements make it suitable for a medium-sized listening room, paired with a reasonably powerful amplifier.
Technical specifications
| Power handling | 100 W RMS |
| Recommended amplifier | 30 to 100 W RMS at 8 ohms |
| Frequency response ( 6 dB) | 45 Hz to 33 kHz |
| Frequency response ( 3 dB) | 50 Hz to 28 kHz |
| Sensitivity | 84 dB /1W /1m |
| Distortion at 90 dB | < 1% from 110 Hz to 22 kHz |
| Impedance | 8 ohms (4 ohms minimum) |
| Dimensions (W × H × D) | 165 x 300 x 284 mm |
| Weight | 6.2 kg (each) |
What to check before buying used
The Continuum cone mid-woofer should be examined closely: a dent, impact mark or adhesion fault around the surround indicates mechanical stress that affects the stated neutrality. Also check the tweeter's carbon dome, which is sensitive to fingerprints or slight deformations invisible to the eye but audible in the extreme treble. Finally, inspect the curved baffle and the pods: veneer lifting or play between the cabinet elements can reintroduce the colouration that this construction is specifically designed to avoid.
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