Axiom Home Page Forums General Discussion Technical Questions Frequency respone chart

Where can I find a frequency response chart for the M80ti?

You can read them Here .

Thanks Rick!

Your welcome.Do you own the 80's or are you considering them?

You know, I could swear I posted a link to the chart before wid, but for some reason it is gone.

Maybe I fell asleep at work and it was a dream.

When I was checking who was online I seen you were replying to this post.I figured well Curtis has got it covered.I checked back a few minutes later and there was no reply.I don't know.

I own the m80's and the vp150.

Here is one from enjoythemusic.com - the editor at soundstage said he had room problems, and the graph shows quite a few nuances that portray the m80 as an erratic speaker.



Here's one from hometheaterhifi.com

Heres another from enjoythemusic and it seems they were quite pleased with the M80's.You say the graghs portray them as erratic.Can you explain in what way they look erratic?In this article there was no mention of any room problems,as a matter of fact it is said they had no such problems.
I do own the 80's and I think they sound pretty darn good.Which Axioms do you own and have you compared the graghs of them to the ones of the 80's?

From 150 to 300 hz, it's like a roller coaster on the soundstage site's graph. Then it starts again around 400 and goes back to being linear around 800 hz. The enjoythemusic and hometheaterhifi graphs are a lot flatter. Upon first glance of that frequency graph, I would consider the frequency response a tad erratic.

Well you are right about the dips and peaks,I wouldn't say they are erratic though.Looking at some of the others like the Soliloquy graghs they(80's) are not to bad and this is a $6400 speaker.All I really can say is they do sound really good.Thats what its about in the end.

Oh, don't get me wrong - I think the speaker can have a close to flat frequency response, as it did in the enjoythemusic graph - I just think the soundstage graph made it appear to be erratic. soundstage did a graph of the Energy C-9 - a speaker that, while having a ruler flat frequency response, some here attest sounds like crap in comparison to the Axioms.

When I initially posted the question I was just looking for the 34-22k +/-3db that is in the M80ti Specifications. I don’t think these charts show that?

Look for where the signal is down three dB, then look at the frequency. Seems like it's flat down to 60 Hz, then is down 3 dB onward until around 34 Hz.

When I first looked at the charts I noticed they started to fall off at about 60hz also.I have mine in a 2.1 set up,so what I did was I got an Outlaw Icbm to do the crossover work.I set the crossover at 60hz going to dual Hsu Vtf-2's.Its all good now.I would think the -3db would be lower with in room response though.

Comments on this graph were posted by Alan Lofft, Axiom's resident expert on 5/28/2004 under the thread Re: NRC data show Energy & Paradigm better than Axiom [re: jbmjr]. Check it out. It won't answer your question, but it'll give it some perspective.
BTW, frequency response numbers +/- 3dB is a range that can describe "from junk to jewels", according to Dr. Floyd Toole.

Thasp... I have heard the Energy C-9's. They were absolutely terrible. Even the guy selling them (Store manager) thought they sucked.

To all... Some of the response curves shown here are poorly done. The 33 millisecond MLSSA graph shown is a total disaster. The time should have been shortened to about 4 Milliseconds. This would have only shown the response from about 150 Hz and up ... but for an in room test, at least it would show the response of the speaker, and not the room...

Sometime this weekend, I will do a proper ETF graph on an M-22, if anyone is interested...

In reply to:

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Sometime this weekend, I will do a proper ETF graph on an M-22, if anyone is interested...

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Absolutely. Please do.

Sounds really good Craig.I was hoping you would respond.I myself don't know much about reading response curves so anything you could teach me would be great.I'm always open to learn.

Good idea, Craig. Yes, that 33ms MLS time window would let in room reflections from up to about 18 feet away, so 4ms would be a better idea. If you'd care to also place the microphone about 5" above and below the tweeter axis, it would be interesting to note the differences in the two measurements.

Wid... Response curves are actually no mystery. If you have a receiver/amp that has its increments in dBs (I have a Denon 5800 that does, for example) and something like a Stryke Audio disc, you can actually get an idea for yourself. Play a 1000 Hz signal at, for example, -25 dB on your receiver... then increase it to -22 dB ... the is a 3 dB "peak" ... then play -28 dB ... that is a 3 dB "valley" ... Now when you look at a response curve, you can have an idea what it means when you see these 5-6 or higher peaks and valleys... in the midrange and treble, it is pretty signifigant.

For now... try that experiment... and see what you find out.

John K ... It is also interesting to take an ETF room corrected response and compare that to a raw in-room respone... just so you know how badly your room is messing with you ...

Craig,
I understand what you are saying and I can also can make sense of the graghs enjoythemusic did.What I can't make much sense of is the graghs that soundstage did.They just seem to be WAY to erratic on the charts so much so they really didn't make sense to me.Is that what you meant by the wrong method being used?

Wid... I won't go so far as to say that was an erratic response... the average anechoic response was about +/- 4 dB ... And I think the M-80 as it exists today is a lot flatter... The M-80 has 6 drivers along a 39 inch or one meter (roughly) line array... getting a smooth response at 2 meters (less than 7 feet) would be tough.

An open question... All M-80 owners sitting 6.5 feet from your speakers please speak up ...

I don't know about anyone else but I sit about 13 feet away,6.5,Craig I don't think so.

As you get further away from the speakers, the response will smooth out, think of the sound coming from all 6 drivers, and the angle each driver is relative to your ears. At 13 feet, you are likely getting the sound Axiom wants you to.... measuring a response (Ala SoundStage) in an anechoic chamber at 6.5 feet will tell you nothing about how the speaker sounds at 13 feet in room...

What do you think of this review? Absolutely terrible?
http://www.soundstage.com/revequip/energy_c9.htm

The reviewer, comparing the C9 with the B&W Nautilus 804:

The Energy C-9 and B&W Nautilus 804 are opposite ends of the price scale -- $1300 versus $3500 -- but such a comparison proved to be time well spent, largely due to the high level of performance offered by the C-9s. In fact, the C-9s stood toe to toe with the Nautilus 804s and certainly weren’t about to back away from the comparison

Here is the link for the Energy's.

I have auditioned both the C-9's and the 804's.... Now it could be that neither store had them set up properly... But I thought the C-9's were a terrible sounding speaker. The store was using Arcam electronics, and it was awful. Even the store manager thought so.

They also sold Totem, and the Hawks were better, bit still not great. Based on my experience with M-22's and a decent sub... I think the M-80's would walk the floor with the C-9's.

You guys have probably demo-ed a lot more speakers than I have, but I know what I like when I hear it.

I heard the MA Silver 8s in the same room with the Veritas 2.4s (supposedly better than the C9s?) and the MAs were far and away clearer, better speakers. I had previously liked the Veritas 2.4s, but they had a wooden, wooly and boxy sound in comparison to the MAs. The Energy tweeter seemed a little zingier, too (I mean that in a bad way).

In the one listen I gave the B&W 804s, I thought the upper midrange was ridiculously over present, but it was a crappy listening room. I imagine the M80s are easily worthy of being discussed/compared with this group of speakers.

I have not heard the MA's ... I do agree with you on the B&W's ... They benefit in the high end from the same type of marketing that Bose does in low-fi. The salesman literally said "Hey, these are B&W's, which makes them worth $4000" ...