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Hi David (and Richard):
Steve Puntolillo at Sonicraft (www.sonicraft.com) handles these exact kind of tapes frequently.
David, you might want to call Steve and chat on the phone, ask him about typical baking times these
days. In keeping with his perfectionist MO, Steve has a lab-grade oven:
http://www.sonicraft.com/Tape_Baking.html
Richard and I have experienced longer baking times for sticky-shed quarter-inch tapes in recent
years. I still haven't had an Ampex 456 or 406 that wasn't playable after 12 hours in the American
Harvest food dehydrator and 8-12 hours of cooling. Scotch 226/227 is a different matter! I assume 2"
tapes may need longer baking times because of more effected area embedded deeper within insulating
layers. But Steve is the man to ask about this!
David, your project sounds interesting. I hope everything works out with both the audio and video
ends of things.
-- Tom Fine
----- Original Message -----
From: "Richard L. Hess" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, January 27, 2016 12:05 PM
Subject: Re: [ARSCLIST] Ampex 456 Grand Master: What To Expect?
> David,
>
> Ampex 456 is the "poster child" for Sticky Shed Syndrome. It was the top-of-the-line tape at that
> point in time...and until the end of Quantegy, although, I think GP9 came later (via 3M), 456 was
> still made.
>
> I can't help you out with baking times for 2-inch tape, but temperature is 54 °C. I suspect in a
> typical Nesco Food Dehydrator (with Adapt-a-trays added for the height for 2-inch. I don't know if
> you need one or two empty "rings" for 2-inch--I suspect two. If you have 14-inch reels, none of
> the NESCO products really fit, but the big one will let you do a 14-inch tape pack without
> flanges. 10.5 fits in the common (lower cost) units that have Adapt-a-trays for them.
>
> I attempt to keep this list up-to-date, but maybe I should make some additions? Anyone?
>
> http://richardhess.com/notes/formats/magnetic-media/magnetic-tapes/analog-audio/degrading-tapes/
>
> DO NOT try and play that tape without baking. Your audio guru who is doing 24-tracks should be up
> to speed on this and should have baking facilities. Some use scientific ovens.
>
> Cheers,
>
> Richard
>
>
> On 1/27/2016 11:29 AM, David Crosthwait wrote:
>> Hello Tom and Richard,
>>
>> In my digging through a church archive yesterday with new clients, we uncovered many reels of 24
>> track on 2" among other audio tapes. One tape of interest I have with me, destined to a comrade
>> here in town who is as passionate about vintage audiotape recovery as we are with videotape, is a
>> 24 track on "Ampex Grand Master" 456 from 1988 in a cardboard box. It has track assignments
>> within. The tape has leader breaks. In a test of sorts, we are going to link this up with a 1" C
>> of the concert (same production, same date) to create a new stereo mixed version. I've done this
>> before so I am familiar with the routine. The question to you two (and others) is: What should we
>> expect from a stickiness standpoint (if any) from 1988 vintage "Grand Master" 456?
>>
>> The client has multiple reels of this concert so this is a test of sorts. The 24 track will
>> create a ProTools session for the mix down and new stereo imaging (5.1?), to be done at the
>> client's facility. I'm going to be remastering the 1" C today to file (it too is in stereo albeit
>> with weak L-R imaging as viewed on the phase scope). It's a full orchestra with choir.
>>
>>
>> Thank you.
>>
>> Best Regards,
>>
>> David Crosthwait
>> DC Video
>> Transferring NTSC, PAL & SECAM Two Inch Quad and Helical Source Tapes (and More)!
>>
>> http://www.dcvideo.com/what-we-do
>> [log in to unmask]
>>
>> www.dcvideo.com
>>
>> Follow DC Video on Facebook: https://www.facebook.com/dcvideo
>> Follow DC Video on YouTube: http://www.youtube.com/user/dcvideoonline
>>
> --
> Richard L. Hess email: [log in to unmask]
> Aurora, Ontario, Canada 647 479 2800
> http://www.richardhess.com/tape/contact.htm
> Quality tape transfers -- even from hard-to-play tapes.
>
>
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