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Re: New M22 speakers.... break-in required?
SolidState #272636 09/17/09 07:14 PM
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I will try a DIY project once I've researched the hell out of speaker design. It's mostly the crossover's that I find baffling(no pun intended). I have yet to buy any books on design/theory, but so far have been browsing a number of websites to gather more info. I have a rather basic understanding of how crossovers work but there are obviously alot of variables involved and without both an understanding of what is actually "heard" when one makes certain changes or a way to accurately measure them it can be somewhat daunting. Nevertheless, I think with enough research, and some software to get "in the ballpark", I believe it would be extremely rewarding to build some nice speakers. I've contacted Solen, and they informed me that they would actually help with the process by recommending certain driver combinations, design the crossover for you(provided you buy the parts from them), or for a modest fee will build a pair of crossovers for you based on the driver manufacturer's data and your goals. They'll make recommendations on the type of crossover and crossover points ect.


Half of communication is listening. You can't listen with your mouth.
Re: New M22 speakers.... break-in required?
SolidState #272637 09/17/09 07:15 PM
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 Quote:
I'm also VERY CURIOUS why magnets are glued to the back of each driver... I have yet to hear an answer to that one!

You're probably looking at the magnetic shielding material. They prevent the magnetic field from emanating beyond the driver, so you can place the speakers near TVs, pacemakers, etc. \:\)

They don't affect the magnetic field inside the driver.

Re: New M22 speakers.... break-in required?
Adrian #272639 09/17/09 07:29 PM
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I'm with you Adrien. I like building stuff, but crossovers and the like are a steep learning curve.


Fred

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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
Re: New M22 speakers.... break-in required?
fredk #272640 09/17/09 07:35 PM
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Back at you Frad!


Half of communication is listening. You can't listen with your mouth.
Re: New M22 speakers.... break-in required?
Adrian #272641 09/17/09 07:49 PM
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The funny thing is, I don't find the math or cross-over design work hard at all. Where my dreams of DiY speaker building come to a halt is working with the materials to build the cabinets.

That said, if I were building my ultimate speaker, it would be tri-amped, with the amps strapped to the enclosure. It would take a digital feed. The cross-over work would be done in the digital domain to maintain phase alignment perfectly. Then three separate DACs feeding each of the power amps. Or even better, those "power DACs" which take PCM and use it to drive the class D amp directly.


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris
Re: New M22 speakers.... break-in required?
ClubNeon #272643 09/17/09 07:53 PM
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owhh ok so it's a type of shielding? Ahh so it acts like Mu metal? owhh wow I didn't know that! Thanks for the info ClubNeon! There is so much to learn! Back to the books...

Solid-State

Re: New M22 speakers.... break-in required?
SolidState #272644 09/17/09 08:02 PM
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Chris!! you and I need to talk!!


Half of communication is listening. You can't listen with your mouth.
Re: New M22 speakers.... break-in required?
alan #272645 09/17/09 08:05 PM
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 Originally Posted By: alan
Hi Gulf,

Nah, like TomTuttle says, it's BS.

Any actual mechanical break-in of the motor/cone/dome assembly takes place within seconds of your firing them up.

Of course, there is a psycho-acoustical break-in of your ear/brain hearing system since those little woofers and tweeters are pumping like crazy to mimic real sounds and instrumental sound. That's what break-in really is.

Enjoy the M22s.

Regards,
Alan


The mechanical component of break in is what has always made me leery about powering the power to new speakers. This is the first time someone has actually spoken to it. – thank you.

I would still apply some common sense to this though. The elastic material (regardless of what it happens to be) still needs to flex a bit before it is exercised at 100% I think. 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.

I would also be hesitant to fire up a new set of speakers and pour the power to them before allowing them a few hours to reach room temperature. That is for the folks who live in the colder hemisphere. Things become quite brittle when they are cold.

Re: New M22 speakers.... break-in required?
SolidState #272646 09/17/09 08:06 PM
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I have a similar dream to build a line array using the RD75 for mid, woofers and planar PDR tweeters in line arrays for low and high. I also would like to power them tri-amp active DSP xover. I've found some interesting active DSP xovers for pro PA line array work that would do the trick for around $1500 and have balanced stereo in with 6 outs with decent DSP and converters. The cost of such a project is gotta be over $5k \:\(

Solid-State

PS considering custom high end outfits build such speakers into the walls of $100k plus theater rooms I guess $5k isn't that bad!

Last edited by SolidState; 09/17/09 08:09 PM.
Re: New M22 speakers.... break-in required?
SolidState #272648 09/17/09 08:16 PM
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The problem one runs into these days when wanting to do work in the digital realm is HDCP. A decade ago one could have just run S/PDIF connects to the speaker. But if you're designing for high-end, you're going to have to handle Blu-ray, which means HDMI, and copy prohibition.


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris
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