Short answer: the Linkwitz Lab LXmini, if you are buying new. The Infinity Primus 360 measures as well as it (#88 vs #86 of 228 floorstanding speakers, 4.2/5 vs 4.2/5) but is discontinued, so only consider it used; the Linkwitz Lab LXmini is still sold new at $505.
The case for the Linkwitz Lab LXmini: A build it yourself DSP speaker with a huge, open soundstage, little cabinet sound and surprising bass for its narrow size. The catch: This is not a conventional passive pair: it requires a construction-plan license, assembly, miniDSP, four matched amplifier channels and careful gain/setup work, so the apparent kit price is not the complete system cost.
The Infinity Primus 360 is the more accurate option. A budget three way tower with surprisingly even sound and well controlled dispersion that takes EQ well, a bargain on the used market. Its measured preference score, a predictor of how neutral it sounds, is 4.97 against 3.89 for the Linkwitz Lab LXmini. The catch: Manufacturer-spec sensitivity of 93dB runs about 3-4dB optimistic versus the measured 89.4dB average.
Buy the Linkwitz Lab LXmini, since the Infinity Primus 360 is discontinued and only worth hunting down used.
Want more options? Browse the full Passive Home rankings.
Measured Differences
- Efficiency: the Infinity Primus 360 is rated at 89.4 dB sensitivity against 85 dB for the Linkwitz Lab LXmini, so it plays as loud with roughly half the amplifier power.
- Close enough not to matter: bass extension (33 Hz vs 37 Hz, 10 dB down).
Prices on this page were last checked November 14, 2026 at 6:17 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Linkwitz Lab LXmini | Infinity Primus 360 | |
|---|---|---|
| Price | $505.00 per pair | $650 per pair Discontinued |
| Ranked | #86 of 228 in Large Size Floorstanding Speakers | #88 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 33Hz (measured, Erin’s Audio Corner) | 37Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 50Hz (measured, Erin’s Audio Corner) | 53Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 85dB upper driver / 87dB woofer @ 1W/1m (individual driver specifications; complete active-DSP system sensitivity is not directly specified) | 89.4dB (measured, Erin’s Audio Corner; 93dB manufacturer specified) |
| Impedance | 4 ohms upper driver / 8 ohms woofer nominal (separate actively bi-amplified loads; manufacturer specified) | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Drivers | 6.5” SEAS woofer in sealed tube, 4” SEAS full-range dipole driver | Two 6.5” mid-woofers, 4” mid-range, 0.75” dome tweeter |
| Crossover Frequency | 700Hz LR2, active DSP | 350Hz & 3.3kHz, 24dB/octave |
| Amplifier Power | Four channels, 50W/channel minimum with identical voltage gain | - |
| Woofer Cabinet | sealed cylindrical enclosure; open-baffle upper driver | - |
| Spinorama Preference Score | 3.89 (measured, spinorama.org) | 4.97 |
| Spinorama Preference Score with Perfect Sub | 5.77 (measured, spinorama.org) | 7.10 |
| DIY Kit | Yes | No |
| Dimensions | - | 39” x 8.2” x 13” (990 x 208 x 330 mm) |
| Weight | - | 48.5 lbs (22 kg) each |
| Frequency Response | - | 38Hz - 20kHz (±3dB, Manufacturer specified) |
| Recommended Power | - | 10-200W |
Where the Ratings Come From
- Linkwitz Lab LXmini: Spinorama.org measurements and reviews by Erin’s Audio Corner.
- Infinity Primus 360: 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.
Related Speaker Comparisons
More worthwhile head-to-heads for Linkwitz Lab LXmini: