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My new AE22s - not shielded!

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My new AE22s - not shielded!

Postby sambrox » Fri Mar 22, 2013 9:30 pm

Hello folks

So I received my AE22s today and rushed out to the studio after my day job shift finished and before picking up the kids. I didn't have time to set them up properly but was dying to give them a quick blast, so put them directly on the monitor shelf, either side of my laptop (which also has one of my audio drives stood behind it). Fine for a quick 30 mins run through of some test tracks, just to get a rough feel of them against my other sets. Initially very impressed with the time domain response, but I'll save my review for another thread once they're in their permanent position.

Anyway, so now I'm home, reading the manual whilst the kids are sleeping, and in the 3rd section of the manual, 3rd paragraph, in bold type, it says, " AE22s are NOT magnetically shielded. Magnetically sensitive equipment or media should be kept at least 1m away."
Bloody hell, I'm now thinking, as not only is my laptop sat almost flush up against them, but the drive behind the computer is also in the firing range! Not only that, but the latest Time Machine back up drive is also sat in the shelf under where the laptop is sitting!!!

Of course, under normal circumstances, I'd be rushing out there and undoing my stupidity/ignorance, but unfortunately the missus is in Berlin for the weekend and I can't leave the young'uns. So, I guess my question is, am I over-reacting or can I turn up at the studio on Sunday night once the missus is back and expect all my data to be erased?!?!

Cheers,
Sam
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Re: My new AE22s - not shielded!

Postby mpvano » Fri Mar 22, 2013 9:52 pm

Loudspeakers normally don't have strong enough external fields to upset hard disk drives, but it probably doesn't hurt to keep tapes and diskettes away from them.

The warning is required because unlike older speakers, these will almost certainly distort the image on CRT displays located alongside them.

For years, small monitor speakers had to be designed to work around the problem of adjacent CRT displays being messed up (rotated images, shaded color, etc) because the electron beams that painted the screen would be deflected in undesirable ways by magnetic fields of loudspeaker drivers.

Now that most people use LCD displays, they've started phasing out the additional components from the speakers because LCD displays are completely unaffected by speakers located near them. This saves weight and costs.

(Actually the older speakers were not really magnetically shielded - they just had extra magnets incorporated to cancel out the magnetic field at the angles where a monitor might be located).

Hope this helps,

M
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Re: My new AE22s - not shielded!

Postby sambrox » Fri Mar 22, 2013 10:14 pm

Phew, was hoping someone would say something like that! Thanks for responding, you've saved me a couple of days' worry (although I still won't be truly at ease until I've booted everything on Sunday, of course;-)

Cheers,
Sam
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Re: My new AE22s - not shielded!

Postby Hugh Robjohns » Fri Mar 22, 2013 10:31 pm

I wouldn't lose sleep over it. It's extremely unlikely you'll have any problem at all. The story field from the speakers will be nowhere ner strong enough to corrupt data o a hard drive outside the speaker cabinets.

H
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Re: My new AE22s - not shielded!

Postby sambrox » Sat Mar 23, 2013 5:39 am

Thanks, Hugh.

I love this forum!
Cheers,
Sam
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Re: My new AE22s - not shielded!

Postby chris... » Sat Mar 23, 2013 9:54 am

As I understand it, many older speakers were "magnetically shielded", to address the problem of distorting CRTs. Nowadays, this is unnecessary, as no-one uses CRTs anymore.

However, irrespective of this, you want good backups, (some of which are) located a long way away from the original hard drive. Sounds like you may already have this.
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Re: My new AE22s - not shielded!

Postby Richie Royale » Sat Mar 23, 2013 10:22 am

When I got mine it created a vey pretty dual rainbow effect on my CRT monitor! Quickly replaced with a flat panel!
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Re: My new AE22s - not shielded!

Postby sambrox » Sat Mar 23, 2013 8:04 pm

Thanks Chris. Don't think you can have too many backups!

Richie, do you have your AE22s sitting on your meter bridge as suggested by the manufacturers, or do you have stands?
Any suggestions before I spunk two hundred knicker on these?

Cheers,
Sam
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Re: My new AE22s - not shielded!

Postby Richie Royale » Sun Mar 24, 2013 12:56 am

I have them on a shelf on my desk with my computer monitor in between; they are on Universal Acoustics pad. I don't have the space for stands; my room is too small and the desk is too big!
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