Short answer: the Atlantic Technology 8600iLR, if you are buying new. The Atlantic Technology 8600eLR ranks higher than the Børresen X3 (#204 vs #207 of 228 floorstanding speakers) but is discontinued; its replacement, the Atlantic Technology 8600iLR, is rated 3.2/5 at $6,000 and is still sold new.
The case for the Atlantic Technology 8600eLR: A massive sealed tower with four 8 inch woofers, high sensitivity and boundary controls, now discontinued. The tradeoff: The raw preference score is only 2.65, making a subwoofer and correction essential despite the massive cabinet.
The Børresen X3 is the deeper-bass option. Floorstanding speakers with a ribbon tweeter, very wide dispersion for an expansive soundstage, and a punchy bass that is easy to drive. Its bass reaches about 50Hz before falling 3dB, against 68.8Hz for the Atlantic Technology 8600eLR. 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 Atlantic Technology 8600iLR, the replacement for the discontinued Atlantic Technology 8600eLR; it is rated higher for sound quality than the Børresen X3.
Still deciding? The full Passive Home rankings cover every ranked option.
Measured Differences
- Bass depth: the Børresen X3 reaches 25 Hz (10 dB down) against 47.6 Hz for the Atlantic Technology 8600eLR, about an octave deeper. Low bass that the other only hints at comes through with real weight.
- Tonal accuracy above the bass: with a subwoofer taking the low end, the Atlantic Technology 8600eLR scores 5.3 against 3.5 for the Børresen X3 on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
- Efficiency: the Atlantic Technology 8600eLR is rated at 91 dB sensitivity against 88 dB for the Børresen X3, so it plays as loud with roughly half the amplifier power.
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Specifications Side By Side
| Atlantic Technology 8600eLR | Børresen X3 | |
|---|---|---|
| Price | $5,700 per pair Discontinued | $11,000 per pair |
| Ranked | #204 of 228 in Large Size Floorstanding Speakers | #207 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | about 47.6Hz (measured, Erin’s Audio Corner) | 25Hz (measured, Erin’s Audio Corner) |
| Enclosure | Sealed 3-way floorstander | - |
| Drivers | 1-inch aluminum-magnesium tweeter, dual 5.25-inch midranges, four 8-inch woofers | Planar ribbon tweeter, 4.5” mid-range driver, dual 4.5” bass drivers |
| Frequency Response | 50Hz-25kHz +/-2dB | 35Hz - 50kHz (Manufacturer specified) |
| Sensitivity | 91dB | 88dB |
| Impedance | 6 ohms | 4 ohms |
| Dimensions | 51.7H x 10.9W x 11.4D in | 50.8”H x 13.6”W x 23.9”D (1290.0 x 345.0 x 607.0 mm) |
| Weight | 93.3 lbs (42.3 kg) each | 121.3 lbs (55 kg) |
| Spinorama Preference Score | 2.65 | 2.38 |
| Spinorama Preference Score with Perfect Sub | 5.26 | 3.50 |
| Bass Extension (-3dB) | 68.8Hz (measured, Erin’s Audio Corner via spinorama.org) | 50Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No | No |
| Recommended Power | - | 50W minimum |
| Country | - | Denmark |
Where the Ratings Come From
- Atlantic Technology 8600eLR: Spinorama.org measurements and reviews by AVS.
- Børresen X3: Spinorama.org measurements and reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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How Atlantic Technology 8600eLR compares with other leading options: