MoFi SourcePoint 8 vs Mission LX-3 MKII

Last updated: September 16, 2026

Short answer: the MoFi SourcePoint 8. It ranks #17 of 130 bookshelf speakers by sound quality; the Mission LX-3 MKII ranks #80.

MoFi SourcePoint 8 vs Mission LX-3 MKII

What the MoFi SourcePoint 8 offers: 8” twin-drive concentric driver paired with a 1.25” soft dome tweeter, in a diffraction-reducing baffle design; rated 47Hz-30kHz. Notably more neutral and true-to-source than its sibling SourcePoint 10, which the reviewer found a bit too bright in the treble by comparison - measured about 4-5dB less high-frequency output. Excellent imaging: passed multiple stereo-panning and depth tests, including smooth continuous left-to-right pans without wobble and correct front-to-back layering of vocals versus percussion. Wide horizontal dispersion of about ±60°, broader than the reviewer expected from a coaxial design, and forgiving enough in placement that about 10° of toe-out variance and moving above or below the tweeter axis both still sound good. Excellent dynamic range and compression linearity - about 26dB of headroom up to 102dB/1m equivalent, with issues only appearing below about 60Hz. 8-ohm nominal impedance made it easy to drive on everything from a budget Denon AVR to a high-end Macintosh amplifier. No significant evidence of woofer-cone modulation distortion affecting the tweeter, even at 96dB/1m. Watch for: Like other coincident designs, produces diffraction dips around 4kHz and 7kHz when pointed directly on-axis; needs about 10-15° of toe-out to smooth those out. The rear-ported cabinet (two ports) means it can’t be placed too close to a wall without the bass becoming overblown - the reviewer settled on about 2 feet of clearance. F3 of 52Hz and F10 of 43Hz mean genuine deep bass tops out in the mid-40s Hz in-room - a subwoofer is still needed for true low-end extension. Harmonic distortion crosses the reviewer’s 3% threshold at 96dB (though it’s second-order and less audibly significant), and multitone distortion becomes noticeably more audible at that same output level. Vertical response doesn’t perfectly mirror horizontal, since the cabinet is a rectangle rather than a perfect square around the driver.

What the Mission LX-3 MKII offers: 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 5.52 subwoofer-assisted preference score and reasonable +/-55-degree horizontal coverage. Watch for: 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.

Buy the MoFi SourcePoint 8 if sound quality matters more than the price. Buy the Mission LX-3 MKII if the price matters more than sound quality.

Looking for alternatives? See the complete Passive Home rankings.

Specifications Side By Side

MoFi SourcePoint 8 Mission LX-3 MKII
Price$2594 per pair£249 per pair
Ranked#17 of 130 in Large Size Bookshelf Speakers#80 of 130 in Large Size Bookshelf Speakers
Bass Extension (-10dB)43Hz (measured, Erin's Audio Corner)-
Bass Extension (-3dB)52Hz (measured, Erin's Audio Corner)-
Dimensions18"H x 11.4"W x 13.2"D (457.2 x 289.6 x 335.3 mm)13.6H x 8.9W x 12.1D in
Impedance8 ohms nominal (8 ohms minimum above 80Hz, measured, Erin's Audio Corner)8 ohms nominal, 4.1 ohms minimum
Sensitivity86.3dB (measured, Erin's Audio Corner)88dB
Drivers8" woofer, 1.25-inch soft-dome tweeter1" microfiber-dome tweeter, 6.5" composite-fiber woofer
Weight28 lbs (12.7 kg) each18.5 lbs (8.4 kg) each
Woofer Cabinetported, rear-
Spinorama Preference Score4.393.26
Spinorama Preference Score with Perfect Sub6.535.52
Enclosure-2-way, bass-reflex
Country-United Kingdom (design)

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The Two Speakers In Full

MoFi SourcePoint 8: $2594 per pair Crutchfield eBay

MoFi SourcePoint 8 ranking card

Pros: 8” twin-drive concentric driver paired with a 1.25” soft dome tweeter, in a diffraction-reducing baffle design; rated 47Hz-30kHz. Notably more neutral and true-to-source than its sibling SourcePoint 10, which the reviewer found a bit too bright in the treble by comparison - measured about 4-5dB less high-frequency output. Excellent imaging: passed multiple stereo-panning and depth tests, including smooth continuous left-to-right pans without wobble and correct front-to-back layering of vocals versus percussion. Wide horizontal dispersion of about ±60°, broader than the reviewer expected from a coaxial design, and forgiving enough in placement that about 10° of toe-out variance and moving above or below the tweeter axis both still sound good. Excellent dynamic range and compression linearity - about 26dB of headroom up to 102dB/1m equivalent, with issues only appearing below about 60Hz. 8-ohm nominal impedance made it easy to drive on everything from a budget Denon AVR to a high-end Macintosh amplifier. No significant evidence of woofer-cone modulation distortion affecting the tweeter, even at 96dB/1m. Measured bass extension of 52Hz (-3dB), with a measured sensitivity of 86.3dB.

Cons: Like other coincident designs, produces diffraction dips around 4kHz and 7kHz when pointed directly on-axis; needs about 10-15° of toe-out to smooth those out. The rear-ported cabinet (two ports) means it can’t be placed too close to a wall without the bass becoming overblown - the reviewer settled on about 2 feet of clearance. F3 of 52Hz and F10 of 43Hz mean genuine deep bass tops out in the mid-40s Hz in-room - a subwoofer is still needed for true low-end extension. Harmonic distortion crosses the reviewer’s 3% threshold at 96dB (though it’s second-order and less audibly significant), and multitone distortion becomes noticeably more audible at that same output level. Vertical response doesn’t perfectly mirror horizontal, since the cabinet is a rectangle rather than a perfect square around the driver.

Bass Extension (-10dB)43Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)52Hz (measured, Erin's Audio Corner)
Dimensions18"H x 11.4"W x 13.2"D (457.2 x 289.6 x 335.3 mm)
Drivers8" woofer, 1.25-inch soft-dome tweeter
Impedance8 ohms nominal (8 ohms minimum above 80Hz, measured, Erin's Audio Corner)
Sensitivity86.3dB (measured, Erin's Audio Corner)
Spinorama Preference Score4.39
Spinorama Preference Score with Perfect Sub6.53
Weight28 lbs (12.7 kg) each
Woofer Cabinetported, rear

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 5.52 subwoofer-assisted preference score and reasonable +/-55-degree horizontal coverage.

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.

CountryUnited Kingdom (design)
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 Score3.26
Spinorama Preference Score with Perfect Sub5.52
Weight18.5 lbs (8.4 kg) each