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Re: New M22 speakers.... break-in required?
ClubNeon #272652 09/17/09 08:37 PM
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 Quote:
But if you're designing for high-end, you're going to have to handle Blu-ray, which means HDMI, and copy prohibition.

That line is sig-worthey

Hey Adrian. If you build them, can I come listen?

I wish I had my own space so I could break out the tools and make some dust. ::looks lovingly at 10" table saw sitting in corner of bedroom::


Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
Re: New M22 speakers.... break-in required?
michael_d #272656 09/17/09 08:53 PM
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Hi Michael_d,

You are correct in being prudent about allowing speakers to reach room temperature before applying power. One thing Ian Colquhoun discovered in doing our temperature testing of the Algonquin outdoor speakers (M3s in a different enclosure) is that in very cold temperatures, the high frequency response totally disappears, because the ferrofluid in the magnetic gap becomes thick in cold temperatures and its viscosity changes dramatically, damping the voice-coil movement and thus ruining the high-frequency response.

The reason I state with some confidence that mechanical break-in does not occur is that if it did, the frequency response of the speaker would change with "break-in". But over several decades of blind listening tests at Canada's National Research Council, we kept a number of speakers, good and bad, as sonic "anchors" which would be rotated in listening tests with other speakers. Those were measured anechoically when new, and also years later, and the frequency responses never changed, nor did the numerical ratings assigned in blind listening tests. In other words, they measured and sounded just the same as when new.

If "break-in" actually took place, then the frequency response of a new speaker would change over time as the elasticity of the surround materials "broke in", and they would sound different. But that did not occur, even after years of use.

Regards,
Alan


Alan Lofft,
Axiom Resident Expert (Retired)
Re: New M22 speakers.... break-in required?
fredk #272657 09/17/09 08:55 PM
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Consider yourself invited Fr(e)d! \:D


Half of communication is listening. You can't listen with your mouth.
Re: New M22 speakers.... break-in required?
fredk #272658 09/17/09 09:13 PM
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 Originally Posted By: fredk
That line is sig-worthey

I try to make all of my lines sig-worthy. \:\)

It isn't "copy protection" and "digital rights management", those phrases have already been spun by publicists. When you see them always think, "copy prohibition", and "digital restrictions management."


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris
Re: New M22 speakers.... break-in required?
ClubNeon #272660 09/17/09 10:33 PM
Joined: Nov 2006
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I'm such a jerk I didn't think of such an application for the environment chamber. Yeah I can see it now, guy orders a set of M80se for xmas and they sit in a Puro truck over the weekend at -30. Dude is anxious to fire them up and they seem warm, MDP warms much faster than the metal parts, and the drivers could be affected. Interesting the affects on ferrofluid Ian documented. Perfect for outdoor speaker testing also... duh I never thought of such use. It's also one really neat thing to have in a lab!

Solid-State

Re: New M22 speakers.... break-in required?
michael_d #272696 09/18/09 06:23 PM
Joined: Dec 2003
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 Originally Posted By: michael_d
It’s no different that a bicycle tire. You need to inflate the tube and give it a pretty good stretch, and then deflate it before installing it in the tire or you will have a premature failure.
And yet another myth comes out.


Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70
Re: New M22 speakers.... break-in required?
jakewash #272715 09/19/09 12:54 AM
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....followed by another prick.

Re: New M22 speakers.... break-in required?
michael_d #272718 09/19/09 01:32 AM
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Your analogy is in error.

A bicycle tube is inflated partially, then inserted in the tire. Then, with the valve stem pushed through the hole in the rim, the tire is mounted to the rim, and inflated the rest of the way......the initial, partial inflation is done to avoid the tube being "pinched" between the rim, and tire. It has nothing to do with "stretching".


LIFE: "Choices, balance, and timing"

(Larryism)
Re: New M22 speakers.... break-in required?
michael_d #272723 09/19/09 03:29 AM
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Sounds like someone needs to take a chill pill. LT, your correct in your description.


M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85


Re: New M22 speakers.... break-in required?
SirQuack #272727 09/19/09 04:33 AM
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Don't worry, just a few weeks ago I solved the age old mystery of gravity all by myself.... bicycle tire tubes are nothing!


But anyway, I live in a relatively small and humble town (45,000 or so working class people), but like all towns, there is an upper class here with money. Just this summer one of our towns more wealthy inhabitants went and spent a whopping $500,000 dollars putting in a dedicated Home Theater in his digs. $350,000 of that was spent just on the audio portion of the project. I am not ashamed to say that it is absolutely killing me to know what kind of audio gear you can aquire with $350,000 dollars at your disposal. Even more, I would pay an ungodly amount of money just to be able to experience one movie in this man's personal theater room to see what $350,000 dollars can do with 'Iron Man', 'Dark Knight', 'Pearl Harbor', any of the 'Lord of the Rings' and, well, anything with a decent sound track for that matter.

I would go in with my expectations so high it would be next to impossible to actually meet them, let alone exceed them... but who knows, maybe $350,000 dollars really can purchase a little piece of heaven here on earth. Personally, I think it's disgusting having that much money to throw into a room just to watch movies in, but hey, I guess if you have it to throw around...

Lets put it this way, I'm soooo impressed with the way my $10,000 dollar HT sound/feels, it's just hard to believe that you could build something 35 times better that what I have. Sure I realize I haven't achieved the absolute pinnacle of Home Theater, but can there be something 35 times better than this? I find it hard to believe.

I suppose $10,000 dollar power cords can add up quickly!


My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD
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