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Front view — side by side at true scale
AMartinLogan Motion XT B100BTriangle Comete 40th
MartinLogan Motion XT B100vsTriangle Comete 40th
The Triangle Comete 40th stands 40.0 cm tall — about 3.2 cm more than the MartinLogan Motion XT B100 at 36.8 cm. At 93 dB against 90 dB, the MartinLogan Motion XT B100 is the easier load to drive and plays louder from the same amplifier. The MartinLogan Motion XT B100 reaches deeper in the bass, down to 45 Hz versus 47 Hz. The MartinLogan Motion XT B100 is rear-ported and the Triangle Comete 40th is front-ported. Both land in a similar price bracket, around $1,699 a pair.
| A | B | |
|---|---|---|
| Manufacturer | MartinLogan | Triangle |
| Model | MartinLogan Motion XT B100 | Triangle Comete 40th |
| Height | 368 mm | 400 mm |
| Width | 203 mm | 200 mm |
| Depth | 318 mm | 324 mm |
| Weight | 9.3 kg | 8.8 kg |
| Enclosure | bass-reflex-rear | bass-reflex-front |
| Drivers | 1× tweeter (Folded Motion XT (AMT)), 1× 165 mm mid-bass (Nomex-reinforced Kevlar cone) | 1× 25 mm tweeter (magnesium-dome compression diaphragm), 1× 165 mm mid-bass (natural cellulose-paper cone) |
| Frequency — low | 45 Hz | 47 Hz |
| Frequency — high | 25000 Hz | 22000 Hz |
| Sensitivity | 93 dB | 90 dB |
| Impedance | 4 Ω | 8 Ω |
| Recommended amp | 20–250 W | 25–130 W |
| MAP (USD) | $1,598 / pair | $1,800 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | martinlogan.com ↗ | trianglehifi.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.

