In Reply to: Re: Measurements/Subjective Reviews posted by John Atkinson on May 31, 2004 at 07:05:26:
> In the past when I have compared my quasi-anechoic measurements
> with those taken at the NRC, there has been good agreement, other
> than the "2pi" bosts in the bass in mine, which I do
> explain in the reviews. I will check the NRC Contour graphs.
Okay, I searched the Loudspeaker Forum and couldn't find any postings
comparing NRC and Stereophile measurements of the Dynaudio Contour.
However, I did find a thread at http://db.audioasylum.com/cgi/t.mpl?f=speakers&m=161686
regarding the Dynaudio Confidence C4 that exactly illustrates
my point about measurements of a speaker's bass. A speaker that
measures as having a flat LF response in an anechoic chamber, like
the C4, will indeed have a tilted-up bass in a room. My nearfield
assessment of a speaker's low frequencies is, I believe, closer to
being representative of how a speaker will osund in a typically sized
room.
In that sense, despite them being different in the bass, both the NRC
measurement of the C4 at "http://www.soundstagemagazine.com/measurements/dynaudio_confidence_c4">http://www.soundstagemagazine.com/measurements/dynaudio_confidence_c4 and my measurement at http://www.stereophile.com//loudspeakerreviews/794/index5.html
are both correct. They show the same speaker in different
acoustic environments.
John Atkinson
Editor, Stereophile
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Follow Ups
- Dynaudio? Did you mean Confidence? - John Atkinson 08:48:27 05/31/04 (1)
- Oops - John Atkinson 08:50:58 05/31/04 (0)