Band: opinion spread · Dot: weighted average
Sources split, though most land on one side. About seven in ten by weight — the measurement lab, the German magazine, most video reviewers and many owners — hear a balanced, natural speaker, described as neutral by some and slightly warm by others. A small camp hears it bright or harsh: a reviewer on a run of amplifiers that ended with Emotiva monoblocks, an owner who prefers Polk's R200, a Crutchfield buyer with tone controls. Another hears it thin, dull or emotionally flat: an Argentine owner on a Fosi MC-351 in a small, reflective room, and three Amazon buyers who returned or downgraded it.
Measured
Erin's Klippel scan (tweeter axis, grille off) shows on-axis linearity within about ±2.5 dB, with a high-Q resonance near 660 Hz, a ~1.5 dB dip around 300–600 Hz and a 1–2 dB dip around 2–4 kHz. AUDIO/stereoplay's lab reports ±1 dB ripple on a smooth 5 dB downward tilt from bass to treble and near-identical off-axis curves.
vs. listeners — Neither lab shows a treble peak. The bright reports name small or bright-leaning amplifiers or hard rooms, and the dull and thin reports also mostly come from low-powered class-D amps — so the amplifier and room look like the likelier cause than the speaker, though no one has measured those systems.
“the on-axis frequency response shows us a pretty decent window of response”
Erin's Audio Corner (Klippel NFS; WiiM Ultra and March Audio P501 monoblocks, living room)
“These things were too harsh.”
Dan's Audio Review (Fosi BT30 to Emotiva UPA-1 monoblocks, self-bought)
“Overall, the sound feels very flat and emotionally restrained”
Different-Duck5464, r/BudgetAudiophile (Fosi MC-351, 3.3 m square room, 15 cm from the wall)
