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#356850 - 10/17/11 09:38 PM Re: Sneak Peak: VP160 Prototype [Re: JohnK]
Ajax Offline
axiomite

Registered: 12/30/03
Posts: 6212
Loc: Cleveland, Ohio
Originally Posted By: JohnK
...the W T/M W configuration is well-established as a superior horizontal center design by several Axiom competitors, some at significantly higher prices. There's no reason to believe that Ian and his colleagues won't also be successful in implementing it using M60 components.


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#356853 - 10/17/11 09:58 PM Re: Sneak Peak: VP160 Prototype [Re: Ajax]
Ken.C Offline
shareholder in the making

Registered: 05/03/03
Posts: 17695
Loc: NoVA
Someone doesn't like you doing that...
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#356856 - 10/17/11 10:53 PM Re: Sneak Peak: VP160 Prototype [Re: Ken.C]
Ajax Offline
axiomite

Registered: 12/30/03
Posts: 6212
Loc: Cleveland, Ohio
Whadido? WHADIDO?
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#356867 - 10/18/11 05:14 AM Re: Sneak Peak: VP160 Prototype [Re: BobKay]
Amie Offline
connoisseur

Registered: 02/06/02
Posts: 1620
Originally Posted By: BobKay

In all fairness, Amie, I started the Canadian Tire thing. Not that I don't like seeing Fred get bitch-slapped, but I'd rather it be for his own mischief. Generally speaking, if there's someone here dissing Canada, it's usually me. Please know that I am always smiling when I do it. Ha! "You people" make me laugh.


Roh-rooh . . . how do I unban someone? Apologies to Fred!
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#356868 - 10/18/11 05:15 AM Re: Sneak Peak: VP160 Prototype [Re: JohnK]
CatBrat Offline
axiomite

Registered: 08/05/09
Posts: 5650
Loc: Some random location
Originally Posted By: JohnK
Amie, the newer prototype is looking good(to be precise, 73.47% better). From the relative proportions it appears to be roughly 31" wide.

Brian, even if you were "born a pessimist" there's no need for "guessing" about possible problems here. As has been pointed out several times, the W T/M W configuration is well-established as a superior horizontal center design by several Axiom competitors, some at significantly higher prices. There's no reason to believe that Ian and his colleagues won't also be successful in implementing it using M60 components.


That I have no doubt. I was just poking fun at the holes in the front of it. I know my cat will be poking her paws in them, if I leave them uncovered. As for the layout, it probably makes more sense not to veer away from the suggested driver configuration.

I felt something tickling my arm while I was sleeping. Brushed it off. Laid there for a while. Then was thinking, yetch, must be a spider or something. So, I got up turned the light on, and yup, a spider. About 1/2 dollar size. Grabbed him with a kleenix and flushed him away. Now I can't get back to sleep. Stupid spider!


Edited by CatBrat (10/18/11 05:20 AM)

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#356872 - 10/18/11 05:24 AM Re: Sneak Peak: VP160 Prototype [Re: CatBrat]
MarkSJohnson Offline
shareholder in the making

Registered: 09/27/04
Posts: 10670
Loc: Central NH
The cats are starting the takeover. They're looking to make it look "natural".

You don't let your cats watch crime shows for tips, do you?
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#356880 - 10/18/11 07:50 AM Re: Sneak Peak: VP160 Prototype [Re: Ken.C]
J. B. Offline
connoisseur

Registered: 01/19/11
Posts: 1237
Loc: Quebec, Canada
Originally Posted By: Ken.C
Probably because we have no idea what you're talking about, JB!


just play some movie or some music at a loud level and, with your hand, touch lightly the sides of your main front speakers (mine are M80s) and you'll very easily feel the vibrations;
vibrations usually translate as sound and that is why cabinets are braced (sometimes heavily) to keep the sound clean, uncorrupted by cabinet vibrations. cabinet vibrations translate as distortion.

one usually can have quite a good idea of the amount of bracing in a speaker cabinet by listening to the sound when you hit it with your knuckles. ideally, it should be "dead".
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#356881 - 10/18/11 07:54 AM Re: Sneak Peak: VP160 Prototype [Re: Ian]
J. B. Offline
connoisseur

Registered: 01/19/11
Posts: 1237
Loc: Quebec, Canada
Originally Posted By: Ian

J.B.

Funny you should bring that up at this time. I am writing a piece on the unintuitive workings of cabinet bracing later this month. It will answer your question.



by "unintuitive" i suppose you mean "in a scientific manner", and not by drawing lots in a hat...
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#356892 - 10/18/11 09:01 AM Re: Sneak Peak: VP160 Prototype [Re: J. B.]
Amie Offline
connoisseur

Registered: 02/06/02
Posts: 1620
I haven't seen the article Ian is working on yet, but Alan did a post about this once (last post on this page:)

http://www.axiomaudio.com/boards/ubbthreads.php?ubb=showflat&Number=7375

Quoting him:
Quote:
Haoleb,

All speakers will have some residual output that you might detect if you are standing next to them or put your ear next to the enclosure, but that "coloration" is not detectable at your listening area with program material--music or movie soundtracks.

As to bracing, the notion that "more bracing is better" has not been demonstrated in a number of tests that Axiom did last year on the audibility of distortion.

http://www.axiomaudio.com/distortion.html

As you increase the amount of bracing in a speaker cabinet, you raise the resonant frequency, which may make the resonances more detectable, not less. Axiom's wedge-shaped anti-standing wave enclosure design suppresses the formation of resonances before they can become a problem.

The old "knock test" of a speaker enclosure says nothing about the potential detectability of any resonances. It's about as useful as kicking the tires on a car.

Here's a relevant excerpt from that article:

"For the designer, this presents an interesting paradox to beware of: Audible distortion may increase if distortion is lowered at the price of raising its occurrence frequency."

A good speaker design aims for no audible distortion and this means getting the proper amount of bracing not the most amount of bracing.
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Axiom Resident Expert

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Axiom Audio

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#356894 - 10/18/11 09:35 AM Re: Sneak Peak: VP160 Prototype [Re: Amie]
J. B. Offline
connoisseur

Registered: 01/19/11
Posts: 1237
Loc: Quebec, Canada
Now i understand, thanks a lot, Amie

i read something quite funny in this article: "http://www.axiomaudio.com/distortion.html", where it says:
"The first group of eight listeners (average 92 dB SPL playback level) ranged in age from 20 to 60 (+/-3 dB) and included a mix of male and female auditioners..."


Edited by J. B. (10/18/11 10:03 AM)
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