TrueScaleCompare speakers at true scale.
TrueSpecsCompare technical specifications (up to 4 speakers).HiFi LadderBrowse every speaker side by side, ordered by size or by price.HiFi SearchFind speakers by the specs you want.TrueScaleAudio
Compare speakers at true scale
Pick two speakers and see them side by side at their real-world size.
References
Front view — overlaid at true scale
AMonitor Audio Platinum 100BELAC Concentro S 503.2
Monitor Audio Platinum 100vsELAC Concentro S 503.2
The Monitor Audio Platinum 100 and the ELAC Concentro S 503.2 stand at nearly the same height, around 39.8 cm tall. At 87 dB against 85 dB, the ELAC Concentro S 503.2 is the easier load to drive and plays louder from the same amplifier. The Monitor Audio Platinum 100 reaches deeper in the bass, down to 28 Hz versus 40 Hz. Low frequencies come from a 152 mm cone on the Monitor Audio Platinum 100 and a 180 mm cone on the ELAC Concentro S 503.2. Both land in a similar price bracket, around $7,499 a pair.
| A | B | |
|---|---|---|
| Manufacturer | Monitor Audio | ELAC |
| Model | Platinum 100 3G | Concentro S 503.2 2.0 |
| HiFi ladder position | #143 of 215 bookshelf | #146 of 215 bookshelf |
| Height | 398 mm | 400 mm |
| Width | 225 mm | 219 mm |
| Depth | 325.6 mm | 372 mm |
| Weight | 15.2 kg | 13.4 kg |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× tweeter (MPD III (Air Motion Transformer)), 1× 152 mm mid-bass (RDT III C-CAM) | 1× tweeter (JET 6 pleated-folded ribbon), 1× 130 mm midrange (aluminium AS-XR cone), 1× 180 mm woofer (aluminium AS-XR cone) |
| Frequency — low | 28 Hz | 40 Hz |
| Frequency — high | 60000 Hz | 40000 Hz |
| Sensitivity | 85 dB | 87 dB |
| Impedance | 4 Ω | 4 Ω |
| Recommended amp | 75–300 W | 60–500 W |
| MAP (USD) | $7,599 / pair | $7,398 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | monitoraudio.com ↗ | elac.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.

