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Re: Sneak Peak: VP160 Prototype
JohnK #356850 10/18/11 01:38 AM
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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.




Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton
Re: Sneak Peak: VP160 Prototype
Ajax #356853 10/18/11 01:58 AM
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Someone doesn't like you doing that...


I am the Doctor, and THIS... is my SPOON!
Re: Sneak Peak: VP160 Prototype
Ken.C #356856 10/18/11 02:53 AM
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Whadido? WHADIDO?


Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton
Re: Sneak Peak: VP160 Prototype
BobKay #356867 10/18/11 09:14 AM
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Amie Offline OP
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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!

Re: Sneak Peak: VP160 Prototype
JohnK #356868 10/18/11 09:15 AM
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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!

Last edited by CatBrat; 10/18/11 09:20 AM.
Re: Sneak Peak: VP160 Prototype
CatBrat #356872 10/18/11 09:24 AM
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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?


::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
Re: Sneak Peak: VP160 Prototype
Ken.C #356880 10/18/11 11:50 AM
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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".

Re: Sneak Peak: VP160 Prototype
Ian #356881 10/18/11 11:54 AM
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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...

Re: Sneak Peak: VP160 Prototype
J. B. #356892 10/18/11 01:01 PM
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Amie Offline OP
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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.
_________________________
Alan Lofft,
Axiom Resident Expert


Re: Sneak Peak: VP160 Prototype
Amie #356894 10/18/11 01:35 PM
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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..."

Last edited by J. B.; 10/18/11 02:03 PM.
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