Band: opinion spread · Dot: weighted average
Sources split, and the weight is on the critical side. Amir's Klippel measurement, Sonarworks' chamber and studio measurements, a critical blogger listening at his desk, and several owners and engineers describe a coloured balance — a forward midrange over a thin low end, "hypey" to one engineer. An ASR owner fixed it with a 3 dB cut at 1 kHz. Another group of owners who mix on them call the sound honest, transparent or flat, and Yamaha markets it as an accurate reference.
Measured
Klippel NFS (ASR): listening window within ±4.3 dB from 300 Hz to 5 kHz, with peaking up to about 2 kHz and a predicted in-room response that averages flat rather than sloping down. spinorama.org scores it 3.7 without a subwoofer (6.3 with an ideal one, 5.8 with its automatic EQ). Sonarworks measured a +3 dB peak near 1 kHz in its anechoic chamber that did not go away in the five studios it visited.
vs. listeners — The owners who hear it as flat mostly use it for mixing, where a forward midrange can read as "revealing"; the lab data shows the response isn't flat.
“On-axis is not flat as it should be.”
Amir, Audio Science Review
“These are indeed speakers that I love working with, quite revealing and transparent, especially in the mid range.”
musictracer, Audio Science Review forum
