Short answer: the AsciLab F6Bs. It ranks #20 of 222 bookshelf speakers by sound quality (rated 4.5/5); the Dynaudio Heritage Special ranks #29 (rated 4.4/5).
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 4.32 for the Dynaudio Heritage Special. Watch for: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio.
The Dynaudio Heritage Special is the deeper-bass option. A limited edition bookshelf speaker with huge output for its size, robust bass, and a big, well proportioned soundstage. Its bass reaches about 52Hz before falling 3dB, against 82Hz for the AsciLab F6Bs. Watch for: At lower listening volumes, dynamic range and kick-drum punch fell short of higher-sensitivity speakers the reviewer has tested (JBL 4367, KEF Reference 1 Meta): the sheer output ceiling is impressive, but it isn’t a highly dynamic-sounding speaker at modest levels.
Buy the AsciLab F6Bs. It is rated higher for sound quality than the Dynaudio Heritage Special.
Want more options? Browse the full Passive Home rankings.
A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price.
A limited edition bookshelf speaker with huge output for its size, robust bass, and a big, well proportioned soundstage.
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Specifications Side By Side
| AsciLab F6Bs | Dynaudio Heritage Special | |
|---|---|---|
| Price | €799 per pair | $7,000 per pair |
| Ranked | #20 of 222 in Large Size Bookshelf Speakers | #29 of 222 in Large Size Bookshelf Speakers |
| Enclosure | sealed | - |
| Drivers | 1” aluminum dome tweeter with waveguide and phase plug, 6” fiber cone woofer | 18cm MSP cone woofer, 28mm Esotar 3 dome tweeter |
| Dimensions | 14.5”H x 8”W x 6.1”D (368 x 203 x 154 mm) | 15.2”H x 8.2”W x 12.6”D (385 x 208 x 320 mm) |
| Weight | 12.3 lbs (5.6 kg) each | 24.3 lbs (11 kg) each |
| Sensitivity | 85.2dB @ 2.83V/1m (measured, Audio Science Review) | 85dB (measured at 2.83V/1m, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal, 3.7 ohms minimum | 5.1 ohms minimum, ported mode (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 82.0Hz (measured, Audio Science Review) | 52Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 50.1Hz (measured, Audio Science Review) | 38Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1kHz | - |
| Mounting | VESA 100 wall mount compatible | - |
| Warranty | 2 years | - |
| Country | South Korea | Denmark |
| Maximum SPL | 100dB full bandwidth, 102dB above 100Hz (manufacturer specified) | - |
| Spinorama Preference Score | 5.24 | 4.32 |
| Spinorama Preference Score with Perfect Sub | 7.90 | 6.33 |
| DIY Kit | No | No |
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