Front view — side by side at true scale
AMartinLogan Motion XT F100BJBL HDI-3800
| A | B | |
|---|---|---|
| Manufacturer | MartinLogan | JBL |
| Model | MartinLogan Motion XT F100 | JBL HDI-3800 |
| Height | 1213 mm | 1101 mm |
| Width | 318 mm | 277 mm |
| Depth | 343 mm | 418 mm |
| Weight | 34.5 kg | 38 kg |
| Enclosure | bass-reflex-down | bass-reflex-rear |
| Drivers | 1× tweeter (Folded Motion XT (AMT)), 1× 165 mm midrange (Nomex-reinforced Kevlar cone), 3× 165 mm woofer (aluminium cone) | 1× 25 mm tweeter (Teonex compression driver), 3× 200 mm woofer (Advanced Aluminum Matrix cone) |
| Frequency — low | 31 Hz | 37 Hz |
| Frequency — high | 25000 Hz | 30000 Hz |
| Sensitivity | 92 dB | 92 dB |
| Impedance | 4 Ω | 4 Ω |
| Recommended amp | 20–450 W | 25–300 W |
| MAP (USD) | $4,500 / pair | $5,000 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | martinlogan.com ↗ | jbl.com ↗ |
| Product page | Open product page ↗ | Open product page ↗ |
Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.

