Short answer: the AsciLab F6Bs. It ranks #20 of 216 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 slimmer, sealed, VESA 100 wall mountable variant of the AsciLab F6B, trading the AsciLab F6B’s passive radiator for a shallower 15.4cm deep cabinet that can go straight on a wall bracket. 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. One of the rare cases where the reviewer measured a speaker as flawed but still genuinely enjoyed listening to it. 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.
Specifications Side By Side
| AsciLab F6Bs | Dynaudio Heritage Special | |
|---|---|---|
| Price | €799 per pair | $7,000 per pair |
| Ranked | #20 of 216 in Large Size Bookshelf Speakers | #29 of 216 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 |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: AsciLab F6Bs (measured by Audio Science Review) and Dynaudio Heritage Special (measured by Erin’s Audio Corner), via spinorama.org.
Related Speaker Comparisons
More worthwhile head-to-heads for AsciLab F6Bs:
- AsciLab F6Bs vs Perlisten S4b
- AsciLab F6Bs vs KEF Reference 1 Meta
- AsciLab F6Bs vs GR-Research NX-Studio
- AsciLab C6B vs AsciLab F6Bs
- Audio First Cadentia 3 vs AsciLab F6Bs
Prices on this page were last checked October 12, 2026 at 4:13 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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The Two Speakers In Full
AsciLab F6Bs: €799 per pair Audiophonics eBay
Same family: the AsciLab F6B (smaller bookshelf, ranked higher, rated 4.6/5).
Pros: A slimmer, sealed, VESA 100 wall mountable variant of the AsciLab F6B, trading the AsciLab F6B’s passive radiator for a shallower 15.4cm deep cabinet that can go straight on a wall bracket. Off axis sound tracks the on axis response unusually consistently for a sealed 2-way this size, and on axis deviation measures a clean 0.25dB average. Measured bass extension of 82.0Hz (-3dB), with a measured sensitivity of 85.2dB.
Cons: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio. Bass extension is measured at 82.0Hz at -3dB, noticeably less than the passive radiator equipped AsciLab F6B, and listening window smoothness measures only a moderate 0.39. The 4 ohm nominal impedance calls for a reasonably capable amplifier.
Full AsciLab F6Bs review and specifications →
| Bass Extension (-10dB) | 50.1Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 82.0Hz (measured, Audio Science Review) |
| Country | South Korea |
| Crossover Frequency | 1kHz |
| DIY Kit | No |
| Dimensions | 14.5”H x 8”W x 6.1”D (368 x 203 x 154 mm) |
| Drivers | 1” aluminum dome tweeter with waveguide and phase plug, 6” fiber cone woofer |
| Enclosure | sealed |
| Impedance | 4 ohms nominal, 3.7 ohms minimum |
| Maximum SPL | 100dB full bandwidth, 102dB above 100Hz (manufacturer specified) |
| Mounting | VESA 100 wall mount compatible |
| Sensitivity | 85.2dB @ 2.83V/1m (measured, Audio Science Review) |
| Spinorama Preference Score | 5.24 |
| Spinorama Preference Score with Perfect Sub | 7.90 |
| Warranty | 2 years |
| Weight | 12.3 lbs (5.6 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- AsciLab F6Bs vs Epos ES14N
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Dynaudio Heritage Special: $7,000 per pair Safe and Sound HQ $7,000 eBay
Pros: One of the rare cases where the reviewer measured a speaker as flawed but still genuinely enjoyed listening to it. A massive 4” voice coil on the midwoofer gives it exceptional output capability for a bookshelf speaker: averaged 100dB at 3.5 meters with no audible mechanical noise, port chuffing, or woofer bottoming even when deliberately pushed hard. Bass is very robust and doesn’t noticeably give up output as volume increases, staying solid at both low and high listening levels. Big, well-proportioned soundstage: wide without losing image focus. Limited run of 2,500 pairs with genuine collectible/heritage value; the tweeter (Esotar 3) and midwoofer both use premium Dynaudio-made drivers with an unusually wide, stout voice coil. Measured bass extension of 52Hz (-3dB), with a measured sensitivity of 85dB.
Cons: 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. A degree of “softness” in the upper mid-range. Selective sibilance in the 4-6kHz treble region that shows up on some tracks but not others, which the reviewer found mildly aggravating and would want to EQ down given the choice. Neither the tweeter nor the woofer is fully flush-mounted to the baffle, likely intentional as part of the heritage-styled look, but the reviewer wonders how much this affected linearity. At $7000/pair (and a discontinued limited run, so used/open-box pricing around $5,000/pair is about the best you’ll do now), this is a serious investment for a bookshelf speaker.
Full Dynaudio Heritage Special review and specifications →
| Released | Nov 2020 (5 years ago) |
|---|---|
| Bass Extension (-10dB) | 38Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 52Hz (measured, Erin’s Audio Corner) |
| Country | Denmark |
| DIY Kit | No |
| Dimensions | 15.2”H x 8.2”W x 12.6”D (385 x 208 x 320 mm) |
| Drivers | 18cm MSP cone woofer, 28mm Esotar 3 dome tweeter |
| Impedance | 5.1 ohms minimum, ported mode (measured, Erin’s Audio Corner) |
| Sensitivity | 85dB (measured at 2.83V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.32 |
| Spinorama Preference Score with Perfect Sub | 6.33 |
| Weight | 24.3 lbs (11 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Dynaudio Heritage Special vs Radiant Acoustics Clarity 6.2
- Dynaudio Heritage Special vs MoFi SourcePoint 10
- Dynaudio Heritage Special vs Wharfedale Super Linton
- Dynaudio Heritage Special vs Ascend Acoustics CMT-340 SE2
- Dynaudio Heritage Special vs Arendal 1528 Monitor 8
- Dynaudio Heritage Special vs Wharfedale Linton 85
- Dynaudio Heritage Special vs Ascend Acoustics Sierra-LX
- Dynaudio Heritage Special vs Revel M126Be
- See all 47 comparisons