We bought 2 Arnold Magnetic Viewers a few months back and we are finding them to be an immense help in our shop. I would definitely recommend, a few things though (in response to what others have noted):
-Bubbles: I've noticed if you hold the viewer at an angle and lightly tap on the back the bubbles will eventually disappear. We've also noticed that you definitely have to spread the fluid around the disc by slowly rotating it at an angle. This will evenly distribute the fluid inside and you'll get noticeably better results.
-You definitely have to keep the sponge in the canister moist and the container holds a decent amount of water. We've been actively using ours, but I would suspect you'd want to check them every 2-3 weeks.
Joshua S. Harris
Media Preservation Coordinator
Department of Preservation Services
University of Illinois Libraries
1408 West Gregory Drive, Room 425
Urbana, Illinois 61801
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From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Richard L. Hess
Sent: Wednesday, February 22, 2017 09:05
To: [log in to unmask]
Subject: Re: [ARSCLIST] Magnetic viewers
As I understand it, bubbles come from shipping and mine has gotten better with age and rubbing in circular motions. I, too, was disappointed at first, but things seem better. I think there is something in the instructions or on the website about that, but I don't have time to dig at the moment.
Make certain you keep the thing moist in the humidor, that is the big drawback, IMHO, but the second Sigma was almost totally useless--much less sensitive than the first (now dead) unit. Andrew Wedman who used to be at Universal in Europe complained that the Sigma was much too slow for their production work.
So far, the new Arnold has been doing well for me, though I did use Kyread when I was looking at digital recordings as I think it has higher resolution.
On 2/22/2017 09:21, Doug Pomeroy wrote:
> I just bought a new Arnold viewer and am disappointed with the quality:
> It has bubbles along with the magnetic fluid. It's not useless, but
> one wonders about their quality control.
>> Date: Tue, 21 Feb 2017 07:16:06 +0000
>> From: Ted Kendall <[log in to unmask]>
>> Subject: Re: Magnetic viewers
>> I bought a Sigma for a job, and got through it, but compared to the
>> old Arnold device it's a fussy and dim thing. The big money's in
>> reading bank cards, where the signal is put on with a hammer, so the
>> weaker fields from analogue media aren't front-and-centre any more.
> Doug Pomeroy
> Audio Restoration and Mastering Services
> 193 Baltic St
> Brooklyn, NY 11201-6173
> (718) 855-2650
> [log in to unmask]
Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada 647 479 2800
Quality tape transfers -- even from hard-to-play tapes.