MoFi SourcePoint 888 vs JBL HDI-3800

Last updated: September 29, 2026

Short answer: the MoFi SourcePoint 888. It ranks #4 of 73 floorstanding speakers by sound quality, rated 4.7/5, at $5,495. The JBL HDI-3800 ranks #14, rated 4.5/5, at $5,000, $495 cheaper, which does not close the gap in sound quality.

MoFi SourcePoint 888 vs JBL HDI-3800

The case for the MoFi SourcePoint 888: Three-way vented design: an 8” coaxial mid-range/1.25” dome tweeter driver plus two additional 8” woofers crossed at about 130Hz, giving genuinely full-range output (F3 34Hz, F10 26Hz) other than the deepest subsonic content. The catch: A significant investment, best ordered from a dealer with a good return policy.

The case for the JBL HDI-3800: 2410H-2 1” Teonex compression driver matched to a custom High-Definition Imaging (HDI) horn geometry achieves exceptional horizontal directivity control, high output capability, and effortless transient response. The catch: On-axis frequency response features a narrow upper-frequency elevation around 8-10kHz, performing noticeably smoother when toed out 10-20° off-axis.

One note: the JBL HDI-3800 is no longer sold new, but at #14 of 73 floorstanding speakers by sound quality it still outranks most current models, so used is worth considering.

Buy the MoFi SourcePoint 888. It is rated higher for sound quality, and the $495 you would save on the JBL HDI-3800 does not close the gap.

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

Specifications Side By Side

MoFi SourcePoint 888 JBL HDI-3800
Price$5495 per pair$5,000.00 per pair Discontinued
Ranked#4 of 73 in Large Size Floorstanding Speakers#14 of 73 in Large Size Floorstanding Speakers
Bass Extension (-10dB)26Hz (measured, Erin’s Audio Corner)28Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)34Hz (measured, Erin’s Audio Corner)37Hz (measured, Erin’s Audio Corner)
Dimensions41.2”H x 12.6”W x 16.1”D (1046.5 x 320 x 408.9 mm)43.3”H x 11.8”W x 16.4”D (1100.5 x 300.0 x 417.8 mm)
Impedance6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner)4 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner)
DriversDual 8” paper cone woofers, 8” Paper Cone midrange, 1.25” wide roll soft dome tweeter1 in. 2410H-2 Teonex compression driver with HDI horn, triple 8 in. Advanced Aluminum Matrix cone woofers
Sensitivity85.6dB (measured, Erin’s Audio Corner)92dB (measured average, Erin’s Audio Corner)
Weight94.8 lbs (43 kg) each83.8 lbs (38.0 kg) each
Woofer Cabinetported, rearported, rear
Spinorama Preference Score6.095.62
Spinorama Preference Score with Perfect Sub7.217.03
DIY KitNoNo

How MoFi SourcePoint 888 compares with other leading options:

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

MoFi SourcePoint 888: $5495 per pair Crutchfield eBay

MoFi SourcePoint 888 ranking card

Pros: Three-way vented design: an 8” coaxial mid-range/1.25” dome tweeter driver plus two additional 8” woofers crossed at about 130Hz, giving genuinely full-range output (F3 34Hz, F10 26Hz) other than the deepest subsonic content. Ranked by the reviewer among his personal top three speakers out of roughly 200 tested, alongside the KEF Blade 2 Meta and Dutch & Dutch 8C, despite costing a small fraction of either. Excellent compression/dynamic-range linearity, holding its own against much pricier speakers like the March Audio Sointuva AWG, KEF Reference 1 Meta, and KEF Blade 2 Meta. On-axis (0°) and 30°-off-axis estimated in-room responses track within about 1-1.5dB of each other above 500Hz, so tonal balance barely changes with placement or listening angle: excellent for multi-seat home theater or entertaining. Wide horizontal dispersion of about ±60°. Distortion stays low: under 1% at 86dB, and under 1% above 200Hz even at 96dB, with multitone distortion mostly under 1% as well. Not a difficult amplifier load (5-ohm minimum impedance, 4.2-ohm minimum EPDR). Checks the three boxes the reviewer considers essential for a home theater speaker: low compression, low distortion, and excellent directivity. Measured bass extension of 34Hz (-3dB), with a measured sensitivity of 85.6dB.

Cons: A significant investment, best ordered from a dealer with a good return policy. Large and heavy floorstander (about 96 lbs, 42” tall) requiring real floor space and rear clearance. Positioning is fairly specific: needs about 2 feet from the rear wall. Closer causes boominess in the 40-50Hz region, farther loses bass extension. Vertical dispersion (about ±50°) is narrower than horizontal (about ±60°), since the two 8” woofers are spaced vertically apart on a tower cabinet, causing some vertical mismatch at lower frequencies. A small on-axis dip around 500Hz and a deliberately lower tweeter level (about 0.5dB below the midrange) are intentional design choices for smoother in-room response, but mean the raw on-axis measurement isn’t perfectly flat. A mild diffraction-related dip appears around 3kHz in directivity measurements. Toeing the speaker out more than about 10° starts to noticeably reduce top-end energy.

Bass Extension (-10dB)26Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)34Hz (measured, Erin’s Audio Corner)
DIY KitNo
Dimensions41.2”H x 12.6”W x 16.1”D (1046.5 x 320 x 408.9 mm)
DriversDual 8” paper cone woofers, 8” Paper Cone midrange, 1.25” wide roll soft dome tweeter
Impedance6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner)
Sensitivity85.6dB (measured, Erin’s Audio Corner)
Spinorama Preference Score6.09
Spinorama Preference Score with Perfect Sub7.21
Weight94.8 lbs (43 kg) each
Woofer Cabinetported, rear

JBL HDI-3800: $5,000.00 per pair Discontinued eBay

JBL HDI-3800 ranking card

Pros: 2410H-2 1” Teonex compression driver matched to a custom High-Definition Imaging (HDI) horn geometry achieves exceptional horizontal directivity control, high output capability, and effortless transient response. Triple 8” Advanced Aluminum Matrix woofers deliver deep, authoritative bass extension down to an F3 of 37Hz and F10 of 28Hz with minimal low-frequency compression. Outstanding sensitivity (92dB SPL at 2.83V/1m) and ultra-low THD/multitone distortion allow extremely high undistorted SPL output in large home theater spaces. Measured bass extension of 37Hz (-3dB), with a measured sensitivity of 92dB.

Cons: On-axis frequency response features a narrow upper-frequency elevation around 8-10kHz, performing noticeably smoother when toed out 10-20° off-axis. Vertical directivity handoff across the triple woofer layout creates vertical soundstage height tilt depending on listening distance and ear height. Minimum impedance dips to 3.8 ohms, requiring high-current amplifier stability. Substantial cabinet dimensions and 38kg weight require significant room real estate. Discontinued.

Bass Extension (-10dB)28Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)37Hz (measured, Erin’s Audio Corner)
DIY KitNo
Dimensions43.3”H x 11.8”W x 16.4”D (1100.5 x 300.0 x 417.8 mm)
Drivers1 in. 2410H-2 Teonex compression driver with HDI horn, triple 8 in. Advanced Aluminum Matrix cone woofers
Impedance4 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner)
Sensitivity92dB (measured average, Erin’s Audio Corner)
Spinorama Preference Score5.62
Spinorama Preference Score with Perfect Sub7.03
Weight83.8 lbs (38.0 kg) each
Woofer Cabinetported, rear