Floor Loudspeaker Reviews

Sidebar 2: Measurements

I measured the frequency response of the speaker in the listening window—spatially averaged to minimize room standing-wave problems—using third-octave pink noise, and measured the near-field low-frequency response with a sinewave sweep to get an idea of the true bass extension. The nearfield –6dB point was a respectable 37.5Hz, which agreed closely with the measured amount of low bass in the room. This response showed only mild exaggeration in the upper bass, and the response was pretty flat through the midrange, ±2dB limits holding up to 3.15kHz. Above that frequency, however, there was a little too much energy—1–2dB or so—in the last two octaves, which correlates with the perceived treble sound balance.—John Atkinson