Short answer: the AsciLab F6Bs. It ranks #20 of 222 bookshelf speakers by sound quality (rated 4.5/5); the Triangle Borea BR03 ranks #198 (rated 2.8/5).
The Triangle Borea BR03 is the deeper-bass choice. A budget French bookshelf speaker with dual front ports, decent bass for the price and solid, well braced build quality. Its bass reaches about 57Hz before falling 3dB, against 82Hz for the AsciLab F6Bs. The tradeoff: A noticeable mid-range suckout, most pronounced in the upper mid-range/lower treble, that the reviewer attributes to cabinet resonances and driver breakup rather than a deliberate voicing choice: it makes vocals and instruments sound recessed and thin rather than warm.
The AsciLab F6Bs is the more accurate pick. A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price. Its measured preference score, a predictor of how neutral it sounds, is 5.24 against 4.03 for the Triangle Borea BR03. Watch for: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio.
Buy the AsciLab F6Bs. It is rated higher for sound quality than the Triangle Borea BR03.
Looking for alternatives? See the complete Passive Home rankings.
A budget French bookshelf speaker with dual front ports, decent bass for the price and solid, well braced build quality.
A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Triangle Borea BR03 | AsciLab F6Bs | |
|---|---|---|
| Price | $399.00 per pair | €799 per pair |
| Ranked | #198 of 222 in Large Size Bookshelf Speakers | #20 of 222 in Large Size Bookshelf Speakers |
| Drivers | 6.5” natural cellulose midwoofer, 1” (25mm) EFS silk dome tweeter | 1” aluminum dome tweeter with waveguide and phase plug, 6” fiber cone woofer |
| Crossover Frequency | 3600Hz | 1kHz |
| Dimensions | 14.96”H x 8.11”W x 12.36”D | 14.5”H x 8”W x 6.1”D (368 x 203 x 154 mm) |
| Weight | 13.2 lbs (6 kg) each | 12.3 lbs (5.6 kg) each |
| Impedance | 8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms nominal, 3.7 ohms minimum |
| Sensitivity | 87.5dB (measured at 2.83V/1m, Erin’s Audio Corner) | 85.2dB @ 2.83V/1m (measured, Audio Science Review) |
| Bass Extension (-3dB) | 57Hz (measured, Erin’s Audio Corner) | 82.0Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 42Hz (measured, Erin’s Audio Corner) | 50.1Hz (measured, Audio Science Review) |
| Recommended Power | 100W | - |
| Woofer Cabinet | ported, dual front ports | - |
| Spinorama Preference Score | 4.03 | 5.24 |
| Spinorama Preference Score with Perfect Sub | 6.38 | 7.90 |
| DIY Kit | No | No |
| Enclosure | - | sealed |
| Mounting | - | VESA 100 wall mount compatible |
| Warranty | - | 2 years |
| Country | - | South Korea |
| Maximum SPL | - | 100dB full bandwidth, 102dB above 100Hz (manufacturer specified) |
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