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: 1213 mm (121.3 cm) · 1 mm = 0.46 px
MartinLogan Motion XT F100vsKEF R7 Meta
The MartinLogan Motion XT F100 stands 121.3 cm tall — about 10.4 cm more than the KEF R7 Meta at 110.9 cm. At 92 dB against 88 dB, the MartinLogan Motion XT F100 is the easier load to drive and plays louder from the same amplifier. The MartinLogan Motion XT F100 reaches deeper in the bass, down to 31 Hz versus 48 Hz. The MartinLogan Motion XT F100 is down-firing ported and the KEF R7 Meta is rear-ported. Both land in a similar price bracket, around $4,750 a pair.
| A | B | |
|---|---|---|
| Manufacturer | MartinLogan | KEF |
| Model | MartinLogan Motion XT F100 | KEF R7 Meta Meta |
| Height | 1213 mm | 1109 mm |
| Width | 318 mm | 311 mm |
| Depth | 343 mm | 384 mm |
| Weight | 34.5 kg | 29.3 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 (MAT aluminium dome), 1× 125 mm midrange (aluminium cone), 2× 165 mm woofer (hybrid aluminium cone) |
| Frequency — low | 31 Hz | 48 Hz |
| Frequency — high | 25000 Hz | 28000 Hz |
| Sensitivity | 92 dB | 88 dB |
| Impedance | 4 Ω | 4 Ω |
| Recommended amp | 20–450 W | 15–250 W |
| MAP (USD) | $4,500 / pair | $5,000 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | martinlogan.com ↗ | international.kef.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.