Axiom Home Page Forums General Discussion Technical Questions MFR for M60ti

Hi, I am about to order M60tis as the front spks. Does anyone have the info regarding the measured frequency response for M60ti ? I am a little bit concerned about the MFR curve for M80ti (www.hometheaterhifi.com/volume_9_3/axiom-m80ti-speakers-9-2002.html) which showed about +/-10dB from 34-20Hz. The rising amplitude above 10K (peaked at @19K) may contribute the "bright" sensation, according to the author. I know M60ti and M80ti are very similar products and am just wondering whether the unflatness of the FR compromises the music fidelity acoustically, or I expect too much from $800 spks .

It didn't look like that review was overly scientific; to quote Alan in last Feb's newsletter,

"A simple claim of frequency response that cites two frequency extremes unqualified by a dB specification (e.g., frequency response: 34 Hz - 22 kHz) is meaningless and useless."
http://www.axiomaudio.com/archives/February2003.html

I've seen other independent frequency response graphs for the M60 and M80 and they were indeed within +-3db between 34 and 22k.

I'm not slamming hometheaterhifi.com in general, or saying what I've said is The Truth Of It (tm), but I think maybe there are different ways of going about measuring frequency response (some having more scientific grounding than others). I'd look around a bit more for more MFR graphs for the M60 and M80. Anyone have a link?

RD

A little knowledge is a dangerous thing. He was measuring his room!

The NRC measurements of the M80s (in which the assumption is that the M60s will be relatively similar) can be found here.

Bobcox is correct in that the Hometheatrehifi review essentially measures a large portion of the reviewer's testing room making his measurements valid to his listening area (within the limitations of his recording equipment used).

All that aside, there is a quick peak in the NRC measurements at the upper end of the spectrum near the 16-19khz mark, but if the reviewer thinks that is the cause of the M80 "brightness" then he is a person who has never actually heard a 20khz tone!
The VAST majority of sound of music and movie material occurs in the midrange spectrum. A peak at the very upper end would hardly be noticeable to merit the title of 'bright' speaker.
In fact, there is a large dip in the upper frequency range 12-14khz mark, yet no one has called the Axiom M80s 'laid back'.

Thanks all for the insights. I'd agree that MFR could be easily compounded, among other things, by the acoustical nature of the underlying testing environment. NRC's measurement is certainly more creditable. Do those results compare favorably to others with the similar price range (i.e., Infinity alpha 50) ?