Short answer: the Dali Rubikore 6. It ranks #64 of 73 floorstanding speakers by sound quality, rated 3.3/5, at $8,000; the Børresen X3 ranks #67, rated 3.0/5, and costs $11,000, which makes this an easy call rather than a real tradeoff.
The case for the Dali Rubikore 6: Unusual 2.5-plus-half-way, four-driver configuration: two woofers overlap up to 800Hz, then one continues alone to about 2600Hz where the tweeter takes over, followed by a supertweeter engaging at 14kHz. The catch: On-axis, the treble sits 3-5dB above the midrange (especially around 4kHz), giving a sibilant, hot top end that the manufacturer itself recommends compensating for with 30° of toe-out (firing the speakers straight into the room rather than at the listener).
Why pick the Børresen X3: A 2.5-way tower built around a planar ribbon tweeter, a 4.5” mid-range driver, and dual 4.5” bass drivers, spec’d at 88dB/1W sensitivity into a 4-ohm nominal load (measured minimum impedance stays a friendly 6.1 ohms above 80Hz, so it doesn’t actually need much power despite the sub-90dB rating). The tradeoff: A significant midrange suckout centered around 200-300Hz measures 8-11dB below the mean SPL, creating an audible hole in the mid-range that multiple independent listeners also flagged unprompted.
Buy the Dali Rubikore 6. It is rated higher for sound quality than the Børresen X3 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Dali Rubikore 6 | Børresen X3 | |
|---|---|---|
| Price | $8000 per pair | $11,000.00 per pair |
| Ranked | #64 of 73 in Large Size Floorstanding Speakers | #67 of 73 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 31Hz (measured, Erin’s Audio Corner) | 25Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 43Hz (measured, Erin’s Audio Corner) | 50Hz (measured, Erin’s Audio Corner) |
| Drivers | 28mm tweeter + dual 180mm woofers | Planar ribbon tweeter, 4.5” mid-range driver, dual 4.5” bass drivers |
| Weight | 114.9 lbs (52.1 kg) | 121.3 lbs (55 kg) |
| Sensitivity | 86.4dB (measured, Erin’s Audio Corner; 88.5dB manufacturer specified) | 88dB |
| Impedance | 4 ohms nominal (4.3 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms |
| Dimensions | 39”H x 7.9”W x 15”D (990.0 x 200.0 x 380.0 mm) | 50.8”H x 13.6”W x 23.9”D (1290.0 x 345.0 x 607.0 mm) |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 5.27 | 2.38 |
| Spinorama Preference Score with Perfect Sub | 6.96 | 3.50 |
| DIY Kit | No | No |
| Frequency Response | - | 35Hz - 50kHz (Manufacturer specified) |
| Recommended Power | - | 50W minimum |
| Country | - | Denmark |
Related Speaker Comparisons
More worthwhile head-to-heads for Dali Rubikore 6:
- Revel F226Be vs Dali Rubikore 6
- Revel Concerta2 F35 vs Dali Rubikore 6
- JBL Studio 698 vs Dali Rubikore 6
- PS Audio Aspen FR10 vs Dali Rubikore 6
- Focal Aria Evo X N°2 vs Dali Rubikore 6
Prices on this page were last checked September 29, 2026 at 3:43 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
Dali Rubikore 6: $8000 per pair Safe and Sound HQ eBay
Pros: Unusual 2.5-plus-half-way, four-driver configuration: two woofers overlap up to 800Hz, then one continues alone to about 2600Hz where the tweeter takes over, followed by a supertweeter engaging at 14kHz. A design layout the reviewer says he’d never encountered before. Bass extension reaches a solid 40-45Hz in-room. Distortion is quite low overall, with an especially impressive gap between second- and third-order harmonic distortion in the midwoofers. Wide horizontal radiation of about ±75°, close to the reviewer’s preferred range for an enveloping soundstage. Very good dynamic range, holding up to about 26dB of level increase (70dB to 102dB) with distortion staying within the reviewer’s 3% threshold even at full output. Multiple attractive finish options, including bi-wireable connections. Measured bass extension of 43Hz (-3dB), with a measured sensitivity of 86.4dB.
Cons: On-axis, the treble sits 3-5dB above the midrange (especially around 4kHz), giving a sibilant, hot top end that the manufacturer itself recommends compensating for with 30° of toe-out (firing the speakers straight into the room rather than at the listener). Even with that toe-out, the midrange still reads as somewhat scooped and recessed: the reviewer needed a wide, +2dB EQ boost around 2.5kHz to bring vocals back into proper balance. A high-Q resonance appears around 590Hz, and another shows up around 800Hz in burst decay measurements. Best combined with sidewall absorption to help tame the elevated 4-5kHz energy, adding to setup complexity. Needs specific listening-height positioning: ears should be at the tweeter (not supertweeter) level for the most accurate sound. Without EQ or acoustic treatment, the reviewer found the combination of a hot tweeter and recessed midrange a “tough sale” despite otherwise strong measured performance.
Full Dali Rubikore 6 review and specifications →
| Bass Extension (-10dB) | 31Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 43Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 39”H x 7.9”W x 15”D (990.0 x 200.0 x 380.0 mm) |
| Drivers | 28mm tweeter + dual 180mm woofers |
| Impedance | 4 ohms nominal (4.3 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 86.4dB (measured, Erin’s Audio Corner; 88.5dB manufacturer specified) |
| Spinorama Preference Score | 5.27 |
| Spinorama Preference Score with Perfect Sub | 6.96 |
| Weight | 114.9 lbs (52.1 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Børresen X3: $11,000.00 per pair eBay
Pros: A 2.5-way tower built around a planar ribbon tweeter, a 4.5” mid-range driver, and dual 4.5” bass drivers, spec’d at 88dB/1W sensitivity into a 4-ohm nominal load (measured minimum impedance stays a friendly 6.1 ohms above 80Hz, so it doesn’t actually need much power despite the sub-90dB rating). Very wide, remarkably consistent horizontal directivity around ±70° gives an expansive, enveloping soundstage, helped by the reviewer’s pair measuring essentially identically to each other for tight image precision. A pronounced high-Q bass shelf centered around 80Hz (roughly 8dB above the mean level) delivers a punchy, attention-grabbing low-end thump at moderate volumes. Harmonic distortion is clean through the midrange at 86dB, and multitone distortion stays under about 3% even though the low end is handled by relatively small 4.5” drivers rather than something larger. Detailed, extended high frequencies when seated on the tweeter’s intended axis. Measured bass extension of 50Hz (-3dB).
Cons: A significant midrange suckout centered around 200-300Hz measures 8-11dB below the mean SPL, creating an audible hole in the mid-range that multiple independent listeners also flagged unprompted. The 80Hz bass shelf comes with the worst low-frequency ringing the reviewer says he has measured to date on a waterfall plot: it lingers well after the surrounding frequencies have decayed, giving kick drum and bass notes a boomy, one-note quality. Significant dynamic compression sets in as volume rises: bass output near 90Hz drops only about 1.5dB at 86dB SPL, but the loss grows substantially by 96dB and 102dB (around 26dB of total dynamic range), so the appealing bass punch measurably fades at higher listening levels. The upper-midrange and lower treble (2-4kHz) read soft and recessed unless the listener sits almost exactly on the tweeter’s reference axis, within about 15°: the manufacturer’s recommended setup (tweeter aimed above ear height, per their design intent) makes this worse rather than better for a seated listener at normal height. A crossover-related directivity kink between the tweeter and mid-range driver, visible in the vertical response, trades some pinpoint image precision for a more diffuse sense of envelopment compared to smaller two-way designs. Resonances appear in the impedance curve near 300Hz and 2kHz, coinciding with the measured midrange dip.
Full Børresen X3 review and specifications →
| Bass Extension (-10dB) | 25Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) |
| Country | Denmark |
| DIY Kit | No |
| Dimensions | 50.8”H x 13.6”W x 23.9”D (1290.0 x 345.0 x 607.0 mm) |
| Drivers | Planar ribbon tweeter, 4.5” mid-range driver, dual 4.5” bass drivers |
| Frequency Response | 35Hz - 50kHz (Manufacturer specified) |
| Impedance | 4 ohms |
| Recommended Power | 50W minimum |
| Sensitivity | 88dB |
| Spinorama Preference Score | 2.38 |
| Spinorama Preference Score with Perfect Sub | 3.50 |
| Weight | 121.3 lbs (55 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons