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#395127 - 07/15/13 11:09 AM The Family of Curves
Ian Offline

Registered: 03/13/01
Posts: 845
The video for the newsletter this month is on the importance of the too-often ignored topic of the Family of Curves. The Family of Curves can be a daunting topic to try and explain but Andrew and I decided we would give it a go.

Family of Curves Video

#395133 - 07/15/13 01:02 PM Re: The Family of Curves [Re: Ian]
tomtuttle Offline

Registered: 06/20/03
Posts: 8433
Loc: Tacoma
Originally Posted By: Andrew
Now, this is obviously a mess, and very difficult to interpret

Loved that. smile

Very informative and interesting information! I think this topic - and this design philosophy - is both what makes Axiom speakers so special, and also what makes Axiom products so often misunderstood.

bibere usque ad hilaritatem

#395210 - 07/17/13 01:07 PM Re: The Family of Curves [Re: tomtuttle]
Ian Offline

Registered: 03/13/01
Posts: 845
Thanks Tom, I am so glad you enjoyed it. It is a tough topic to do in a reasonable length video. We tried to keep to the highlights without getting too deep into one detail or another, of which there are lots. The family of curves is where the vast majority of the work needs to go in a good speaker design.

As mentioned in the video we are thinking of doing a related video focusing just on High Q versus Low Q amplitude response differences and their effect on the listening experience. Perhaps even including some actual score sheets from the blind listen test results that could be compared to the measurements. Our concern with topics like this is that we may be getting too much into the nitty-gritty detail and lose the interest level. Feedback from yourself and others on topics like the family of curves is very much appreciated.
Ian Colquhoun
President & Chief Engineer

#395213 - 07/17/13 02:52 PM Re: The Family of Curves [Re: Ian]
Murph Offline

Registered: 10/05/06
Posts: 6955
Loc: PEI, Canada
As long as I'm learning, I'm happy to get more and more info.
Keep it coming, I say.

If you feel it's too technical and might dissuade the average consumer, post it only on the discussion board and not a direct link from the consumer focused sight. I'd agree, there is a potential for too much info on the marketing/sales focused pages but here on the forum, we can choose to read what we wish.

Edited by Murph (07/17/13 02:57 PM)
Edit Reason: further thoughts
With great power comes Awesome irresponsibility.

#395216 - 07/17/13 09:36 PM Re: The Family of Curves [Re: Ian]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10494
Ian, bring on that info, especially including the blind listening score sheets! Anyone not interested shouldn't matter.

Enjoy the music, not the equipment.

#395219 - 07/17/13 11:34 PM Re: The Family of Curves [Re: Ian]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10400
Loc: Calgary, Alberta
Oh yes, keep it all coming. I don't think there is ever a case of too much information when it comes to this sort of thing.


#395220 - 07/18/13 01:13 AM Re: The Family of Curves [Re: Ian]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11476
Loc: Richland, WA, USA
Yes, Ian, please keep letting us learn. Great stuff!

#395224 - 07/18/13 04:14 AM Re: The Family of Curves [Re: Ian]
Boltron Offline

Registered: 11/18/11
Posts: 172
Loc: Toronto
Thanks for sharing, very informative.
For every expert, there is an equal and opposite expert.

#395225 - 07/18/13 06:38 AM Re: The Family of Curves [Re: Ian]
PatCase Offline

Registered: 07/21/12
Posts: 35
Loc: Guelph, Ontario
Wow! So incredibly interesting. This represents all new learning for me. You did a great job explaining something that I am certain is almost infinitely complex, to laypeople.

As I await my new M100s, I wonder what you discovered and played with in relation to that speaker's family of curves. Given the new drivers and the additional driver, I am sure that, unlike the periodic tweaks to the existing line, it was like designing an entirely new speaker and not just shoving an additional driver into the box.

I especially liked the information about how family of curves analysis influences manufacturers and helps to produce differentiation amongst NRC parented speakers.

How long would family of curve analysis and adjustment take for a new speaker like the M100?

By the way, keep things like this coming!

#395256 - 07/18/13 03:20 PM Re: The Family of Curves [Re: Ian]
Adrian Offline

Registered: 12/27/08
Posts: 6696
Loc: It's all about the location.
Thanks for the informative video, Ian and Andrew. It's obviously quite involved but we can at least get the gist of it.

If you ever had the time, it would be interesting to see a vid on the various driver parameters and their influences on the overall design and how it affects what we hear.
Half of communication is listening. You can't listen with your mouth.

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