Short answer: the MoFi SourcePoint 888 for better sound quality, the JBL HDI-3800 for the lower price. The MoFi SourcePoint 888 ranks #4 of 54 floorstanding speakers at $5500. The JBL HDI-3800 ranks #5 at $5000, $500 cheaper.
What the MoFi SourcePoint 888 offers: 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. Watch for: A significant investment, best ordered from a dealer with a good return policy.
What the JBL HDI-3800 offers: 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. Watch for: On-axis frequency response features a narrow upper-frequency elevation around 8-10kHz, performing noticeably smoother when toed out 10-20° off-axis.
Buy the MoFi SourcePoint 888 if sound quality matters more than the price. Buy the JBL HDI-3800 if the price matters more than sound quality.
Specifications Side By Side
| MoFi SourcePoint 888 | JBL HDI-3800 | |
|---|---|---|
| Price | $5500 | $5,000.00 Discontinued |
| Ranked | #4 of 54 in Large Size Floorstanding Speakers | #5 of 54 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) |
| Dimensions | 41.2"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) |
| Impedance | 6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms nominal (3.8 ohms minimum, measured by Erin’s Audio Corner) |
| Drivers | Dual 8" paper cone woofers, 8" Paper Cone midrange, 1.25" wide roll soft dome tweeter | 1 in. 2410H-2 Teonex compression driver with HDI horn, triple 8 in. Advanced Aluminum Matrix cone woofers |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) | 92dB (measured average, Erin’s Audio Corner) |
| Weight | 94.8 lbs / 43 kg each | 83.8 lbs / 38.0 kg each |
| Woofer Cabinet | ported, rear | ported, rear |
| Discontinued | - | Yes |
Related Speaker Comparisons
More useful head-to-heads from the same speaker class:
- MoFi SourcePoint V10 Master Edition vs Revel F208
- MoFi SourcePoint V10 Master Edition vs Revel Concerta2 F35
- MoFi SourcePoint V10 Master Edition vs Polk T50
- MoFi SourcePoint 888 vs KEF Reference 203
- MoFi SourcePoint 888 vs Revival Audio Atalante 5
The Two Speakers In Full
MoFi SourcePoint 888: $5500 Crutchfield
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.
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.
Full MoFi SourcePoint 888 review and specifications →
| Bass Extension (-10dB) | 26Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 34Hz (measured, Erin's Audio Corner) |
| Dimensions | 41.2"H x 12.6"W x 16.1"D (1046.5 x 320 x 408.9 mm) |
| Drivers | Dual 8" paper cone woofers, 8" Paper Cone midrange, 1.25" wide roll soft dome tweeter |
| Impedance | 6 ohms nominal, 5 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 85.6dB (measured, Erin's Audio Corner) |
| Weight | 94.8 lbs / 43 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- MoFi SourcePoint 888 vs MoFi SourcePoint V10 Master Edition
- MoFi SourcePoint 888 vs KEF Blade Two Meta
- MoFi SourcePoint 888 vs Revel F328Be
- MoFi SourcePoint 888 vs GR-Research NX-Treme
- MoFi SourcePoint 888 vs KEF R5 Meta
- MoFi SourcePoint 888 vs KEF R5
- MoFi SourcePoint 888 vs Revel F226Be
- MoFi SourcePoint 888 vs JBL 4367
- See all 14 comparisons
JBL HDI-3800: $5,000.00 Discontinued
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.
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.
Full JBL HDI-3800 review and specifications →
| Bass Extension (-10dB) | 28Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 37Hz (measured, Erin's Audio Corner) |
| Dimensions | 43.3"H x 11.8"W x 16.4"D (1100.5 x 300.0 x 417.8 mm) |
| Discontinued | Yes |
| Drivers | 1 in. 2410H-2 Teonex compression driver with HDI horn, triple 8 in. Advanced Aluminum Matrix cone woofers |
| Impedance | 4 ohms nominal (3.8 ohms minimum, measured by Erin's Audio Corner) |
| Sensitivity | 92dB (measured average, Erin's Audio Corner) |
| Weight | 83.8 lbs / 38.0 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons