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: 368 mm (36.8 cm) · 1 mm = 1.52 px
KEF LS50 MetavsParadigm Founder 40B
The Paradigm Founder 40B stands 36.8 cm tall — about 6.6 cm more than the KEF LS50 Meta at 30.2 cm. On footprint the Paradigm Founder 40B is the wider cabinet (21.6 cm versus 19.9 cm). At 89 dB against 85 dB, the Paradigm Founder 40B is the easier load to drive and plays louder from the same amplifier. The Paradigm Founder 40B reaches deeper in the bass, down to 69 Hz versus 79 Hz. Low frequencies come from a 130 mm cone on the KEF LS50 Meta and a 152 mm cone on the Paradigm Founder 40B. On price, the Paradigm Founder 40B sits higher — about $2,200 a pair against $1,599 for the KEF LS50 Meta.
| A | B | |
|---|---|---|
| Manufacturer | KEF | Paradigm |
| Model | LS50 Meta | Founder 40B |
| HiFi ladder position | #52 of 255 bookshelf | #135 of 255 bookshelf |
| Height | 302 mm | 368 mm |
| Width | 199 mm | 216 mm |
| Depth | 281 mm | 320 mm |
| Weight | 7.8 kg | 5.1 kg |
| Enclosure | bass-reflex-rear | bass-reflex-rear |
| Drivers | 1× 25 mm tweeter (MAT aluminium dome), 1× 130 mm mid-bass (aluminium cone) | 1× 25 mm tweeter (AL-MAC ceramic dome), 1× 152 mm mid-bass (AL-MAG cone) |
| Crossover frequency | 2100 Hz | 1600 Hz |
| Frequency — low | 79 Hz | 69 Hz |
| Frequency — high | 28000 Hz | 23000 Hz |
| Sensitivity | 85 dB | 89 dB |
| Impedance | 8 Ω | 8 Ω |
| Recommended amp | 40–100 W | 15–150 W |
| MAP (USD) | $1,599 / pair | $2,200 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | international.kef.com ↗ | paradigm.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.