TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
Front view — side by side at true scale
Click either cabinet to swap A ↔ B · Reference height: 47.8 in · 1 in = 11.73 px
MartinLogan Motion XT F100vsJBL HDI-3800
The MartinLogan Motion XT F100 stands 121.3 cm tall — about 11.2 cm more than the JBL HDI-3800 at 110.1 cm. On footprint the MartinLogan Motion XT F100 is the wider cabinet (31.8 cm versus 27.7 cm). The MartinLogan Motion XT F100 reaches deeper in the bass, down to 31 Hz versus 37 Hz. Low frequencies come from a 165 mm cone on the MartinLogan Motion XT F100 and a 200 mm cone on the JBL HDI-3800. Both land in a similar price bracket, around $4,750 a pair.
| A | B | |
|---|---|---|
| Manufacturer | MartinLogan | JBL |
| Model | MartinLogan Motion XT F100 | JBL HDI-3800 |
| Height | 47.8 in | 43.3 in |
| Width | 12.5 in | 10.9 in |
| Depth | 13.5 in | 16.5 in |
| Weight | 76.1 lb | 83.8 lb |
| Enclosure | bass-reflex-down | bass-reflex-rear |
| Drivers | 1× tweeter (Folded Motion XT (AMT)), 1× 6.5 in midrange (Nomex-reinforced Kevlar cone), 3× 6.5 in woofer (aluminium cone) | 1× 1 in tweeter (Teonex compression driver), 3× 7.9 in 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.