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Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
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Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
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In Reply to: RE: Actually on Speaker Measurements posted by Charles Hansen on October 28, 2017 at 20:15:46:
> > We measured [the Harbeth] 30 about 8 years ago and it's impedance curve is
> > pretty wrinkle-free, despite having walls that really resonate like hell
> > at certain frequencies.
>
> Pretty strong evidence that JA used faulty logic to reach an incorrect
> conclusion.
You can find my own measurements of a Harbeth speaker at the link below,
where I do discuss the speaker's resonant enclosure walls and the absence
of correlating wrinkles in the impedance traces. But I don't believe an
outlier like this invalidates the overall correlation I mentioned in the
original post that started this thread. My impedance measurements - as are
Soundstage's, I believe - are made with a sequence of spot frequencies and
the data points are relatively sparse in the region where the Harbeth's
panels are at their liveliest.
The impedance traces I published /are/ slightly uneven between 100Hz and
300Hz and with hindsight, I should have repeated the impedance measurements
with a much closer spacing between the tones. However, my working method
is to gather the data first, analyze later, and follow-up measurements are
not always possible. (I have limited storage at my home and bulky products
like loudspeakers tend to be returned to the manufacturer ASAP.)
John Atkinson
Technical Editor, Stereophile
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: Actually on Speaker Measurements - John Atkinson 10/29/1705:15:39 10/29/17 (2)
- 100-300Hz - Doug Schneider 07:54:47 10/29/17 (0)
- RE: Actually on Speaker Measurements - Charles Hansen 06:30:11 10/29/17 (0)
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