Arendal 1528 Monitor 8 vs Mission LX-3 MKII

Last updated: October 15, 2026

Short answer: the Arendal 1528 Monitor 8. It ranks #23 of 222 bookshelf speakers by sound quality (rated 4.4/5); the Mission LX-3 MKII ranks #138 (rated 3.6/5).

Arendal 1528 Monitor 8 vs Mission LX-3 MKII

The Arendal 1528 Monitor 8 is the more accurate, deeper-bass choice. Three-way design featuring a 28mm tweeter, 5” mid-range, and dual 8” mid-bass drivers in a convertible sealed/ported HDF cabinet, with a supplied port bung for sealed operation near a wall. Its measured preference score, a predictor of how neutral it sounds, is 5.59 against 4.17 for the Mission LX-3 MKII. Its bass reaches about 41Hz before falling 3dB, against 67.4Hz for the Mission LX-3 MKII. Watch for: A dip in the midbase around 100Hz noticeably reduces the “chestiness” of male vocals compared to the reviewer’s reference speaker.

The case for the Mission LX-3 MKII: A large affordable standmount with a 6.5-inch woofer, 88dB rated sensitivity and useful bass. The catch: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt.

Buy the Arendal 1528 Monitor 8. It is rated higher for sound quality than the Mission LX-3 MKII.

Still deciding? The full Passive Home rankings cover every ranked option.

Specifications Side By Side

Arendal 1528 Monitor 8 Mission LX-3 MKII
Price$6000 per pair£249 per pair
Ranked#23 of 222 in Large Size Bookshelf Speakers#138 of 222 in Large Size Bookshelf Speakers
Bass Extension (-10dB)26Hz (measured, Erin’s Audio Corner)42.5Hz (derived from ASR on-axis curve, spinorama.org)
Bass Extension (-3dB)41Hz (measured, Erin’s Audio Corner)67.4Hz (measured, ASR via spinorama.org)
Dimensions31.8”H x 11.4”W x 17.6”D (807.7 x 289.6 x 447 mm)13.6H x 8.9W x 12.1D in
Impedance4 ohms nominal, 3.8 ohms minimum (measured, Erin’s Audio Corner)8 ohms nominal, 4.1 ohms minimum
DriversDual 8” woofers, 5” midrange, 28mm tweeter1” microfiber-dome tweeter, 6.5” composite-fiber woofer
Sensitivity84.4dB (measured, Erin’s Audio Corner)88dB
Weight103.6 lbs (47 kg) each18.5 lbs (8.4 kg) each
Woofer Cabinetported-
Spinorama Preference Score5.594.17
Spinorama Preference Score with Perfect Sub7.046.42
DIY KitNoNo
Enclosure-2-way, bass-reflex
Country-United Kingdom (design)

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.

Listening window: the sound arriving straight at you, averaged over a small window around the listening position.
Arendal 1528 Monitor 8Mission LX-3 MKII
Listening window of the Arendal 1528 Monitor 8 and Mission LX-3 MKII-24-18-12-60+6dB20501002005001k2k5k10k20k
Estimated in-room response: what a typical room adds: reflections from walls and the floor make it tilt down toward the treble, and a gentle, even tilt is ideal.
Arendal 1528 Monitor 8Mission LX-3 MKII
Estimated in-room response of the Arendal 1528 Monitor 8 and Mission LX-3 MKII-24-18-12-60+6dB20501002005001k2k5k10k20k

Measurement data: Arendal 1528 Monitor 8 (measured by Erin’s Audio Corner) and Mission LX-3 MKII (measured by Audio Science Review), via spinorama.org.

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The Two Speakers In Full

Arendal 1528 Monitor 8: $6000 per pair Arendal Sound $6000 eBay

Arendal 1528 Monitor 8 ranking card

Same family: the Arendal Sound 1528 Bookshelf 8 (smaller bookshelf, ranked lower, estimated 4.4/5), the Arendal Sound 1528 Tower 8 (floorstanding, estimated 4.5/5) and the Arendal Sound 1528 Center 8 (center, estimated 4.1/5).

Pros: Three-way design featuring a 28mm tweeter, 5” mid-range, and dual 8” mid-bass drivers in a convertible sealed/ported HDF cabinet, with a supplied port bung for sealed operation near a wall. In ported configuration, reaches down to about 35Hz in most rooms (F3 41Hz, F10 26Hz): deep enough that many listeners could skip a subwoofer unless they want output below 40Hz. Extremely low distortion and compression across the board (harmonic, multitone, and both long- and short-term compression testing): among the best the reviewer has tested at this price, beating speakers costing twice as much. Wide, consistent horizontal soundstage of about ±60°. Smooth, non-fatiguing high frequency rather than the elevated “detail” boost common on speakers marketed for resolution. A slight forwardness around 1.5kHz adds a touch of attack without tipping into brightness. Measured bass extension of 41Hz (-3dB), with a measured sensitivity of 84.4dB.

Cons: A dip in the midbase around 100Hz noticeably reduces the “chestiness” of male vocals compared to the reviewer’s reference speaker. A diffraction-related flare in the upper-midrange/lower-treble (around 1.5-2kHz) gives a mild forwardness that benefits from sidewall absorption panels, though it’s not a major issue. Vertical sweet spot is fairly narrow at about ±20°: a bigger consideration for multi-row home theater seating than rivals like the MoFi SourcePoint 8, which manages about ±60°. The MoFi SourcePoint 8, a similarly-priced rival, also has more linear bass with no midbase dip, at the cost of a more elevated top end. Minor resonances appear around 400Hz and 800Hz in measurements, though the reviewer considers them inaudible or insignificant. Very heavy (about 104 lbs each) HDF cabinet requires dedicated, sturdy stands. Low EPDR (dips to about 1.9 ohms in two spots) means a Class AB amplifier needs to comfortably handle a 4-ohm load without overheating; a Class D amp is a safer choice for full-range use.

Released2024 (2 years ago)
Bass Extension (-10dB)26Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)41Hz (measured, Erin’s Audio Corner)
DIY KitNo
Dimensions31.8”H x 11.4”W x 17.6”D (807.7 x 289.6 x 447 mm)
DriversDual 8” woofers, 5” midrange, 28mm tweeter
Impedance4 ohms nominal, 3.8 ohms minimum (measured, Erin’s Audio Corner)
Sensitivity84.4dB (measured, Erin’s Audio Corner)
Spinorama Preference Score5.59
Spinorama Preference Score with Perfect Sub7.04
Weight103.6 lbs (47 kg) each
Woofer Cabinetported

Mission LX-3 MKII: £249 per pair Richer Sounds eBay

Mission LX-3 MKII ranking card

Pros: A large affordable standmount with a 6.5-inch woofer, 88dB rated sensitivity and useful bass. ASR measured 48Hz estimated in-room extension, a controlled Q of 0.60, a 6.42 subwoofer-assisted preference score and reasonable +/-55-degree horizontal coverage. Measured bass extension of 67.4Hz (-3dB).

Cons: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt. The 345mm-tall, 8.4kg cabinet is bulky and current US availability is limited.

ReleasedJan 2021 (5 years ago)
Bass Extension (-10dB)42.5Hz (derived from ASR on-axis curve, spinorama.org)
Bass Extension (-3dB)67.4Hz (measured, ASR via spinorama.org)
CountryUnited Kingdom (design)
DIY KitNo
Dimensions13.6H x 8.9W x 12.1D in
Drivers1” microfiber-dome tweeter, 6.5” composite-fiber woofer
Enclosure2-way, bass-reflex
Impedance8 ohms nominal, 4.1 ohms minimum
Sensitivity88dB
Spinorama Preference Score4.17
Spinorama Preference Score with Perfect Sub6.42
Weight18.5 lbs (8.4 kg) each