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Hi All,
This reply wound up inadvertently going directly to Ivan so I didn't
want anyone to think I was ignoring his question.
Cheers!
Corey
-------- Original Message --------
Subject: Re: [ARSCLIST] WWII "Your Man In Service" Record
Date: Sat, 02 Jun 2012 10:39:31 -0700
From: Corey Bailey <[log in to unmask]>
To: Ivan Kawaler <[log in to unmask]>
Hi Ivan,
"Crazing", in this case, refers to visible surface cracks that will
often be deep enough to expose (not visibly) the substrate of the disc
to the moisture content in the atmosphere. It's the absorption of
moisture that causes causes the the substrate to swell and subsequently
the surface cracks (crazing).
Here's an example of crazing on a Recordio disc. Scroll to the bottom of
the page to find it:
http://www.videointerchange.com/vintage_78s.htm
As Michael Biel pointed out: DO NOT use any liquid cleaning solution on
this type of disc.
Inspect the surface of the disc with the strongest magnifier you have
available. A jewelers loop can be revealing. I will usually clean this
type of disc with a micro-fiber brush while vacuuming the surface. You
have to be careful if you use a vacuum to insure the vacuum itself
doesn't grab the disc, potentially damaging it.
Cheers!
Corey
Corey Bailey Audio Engineering
www.baileyzone.net
On 6/2/2012 7:22 AM, Ivan Kawaler wrote:
> Corey,
>
> Thanks for your reply. Everything you wrote made sense. However, I
> would like further explanation of "crazing." The record I have does
> show what looks like arcs in the material. At first, I almost thought
> the were some sort of fibers in the material. Is this what crazing
> looks like? If it is, how will this affect the playback? Is there
> any way to compensate for this prior to getting the material into the
> digital realm?
>
> Ivan
>
>
> On Jun 1, 2012, at 3:29 PM, Corey Bailey wrote:
>
>> Hi Ivan,
>>
>> Sorry for the delayed reply.
>>
>> The two clues that you give are the time frame and the off-center
>> hole. Your disc is most likely 78RPM and was possibly made with one
>> of the commercial disc making booths available at Woolworth and many
>> other retailers of the time. It was popular during WWII for people to
>> use these booths to record voice messages to send to loved ones
>> overseas. I was told that Elvis Prestley actually used one of these
>> booths in Memphis to record a voice demo. Not sure about the Pepsi
>> logo but if it's a commercially made recording you will be much
>> better off.
>>
>> Anyway, these discs are VERY FRAGILE, most likely have a cardboard
>> center. Very few have survived the raviges of time and many of those
>> that have, are marginally playable due to surface cracks (crazing)
>> ans such.
>>
>>
>> Start by playing your disc at 78RPM using an appropriate styli with
>> minimal tracking force and see what you get. Record everything you
>> do! You may only have one chance at playback and if it's off-speed,
>> it can be corrected. Use standard RCA Victor 78RPM EQ to start with.
>> If it's a little off, it can be corrected in the digital domain as
>> well. I don't intend to sound flip here but you probably have a voice
>> recording and, as such, have lot's of lattitude with regards to pitch
>> and EQ settings.
>>
>> Check out my page on DYI Record transfers:
>> http://www.baileyzone.net/records%20diy.htm
>>
>> Email me off-list with more questions if you like.
>>
>> Cheers!
>>
>> Corey
>> Corey Bailey Audio Engineering
>> www.baileyzone.net
>>
>> On 5/30/2012 11:09 AM, Ivan Kawaler wrote:
>>> No, this is clearly not cardboard. In my question about cleaning, I
>>> mentioned that I found a reference stating they were acetate.
>>> However, the site was some type of auction, so a more knowledgeable
>>> opinion would be appreciated.
>>>
>>> On May 30, 2012, at 12:02 PM, Roger Kulp wrote:
>>>
>>>> I have found a couple of these.They're cardboard,right?
>>>>
>>>> Good luck trying to play them.I would like to know if anybody has
>>>> had any success in playing similar records,and getting any sound
>>>> from them.
>>>>
>>>> I was digging in the Goodwill clearance bins a few months ago,and I
>>>> found a number of those Capitol Records home recording records that
>>>> were a similar type of cardboard records.
>>>>
>>>> These records can give us a very interesting little audio snapshot
>>>> of a moment in time,and what real people were doing and
>>>> thinking,but unfortunately most of what is on these records is lost
>>>> forever.
>>>>
>>>> Roger
>>>>
>>>> ________________________________
>>>> From: Ivan Kawaler<[log in to unmask]>
>>>> To: [log in to unmask]
>>>> Sent: Wednesday, May 30, 2012 9:24 AM
>>>> Subject: [ARSCLIST] WWII "Your Man In Service" Record
>>>>
>>>> I was recently asked to transfer, and attempt to restore, a record
>>>> of my grandfather from World War II. It is one of the small
>>>> acetate records with the Pepsi:Cola logo on it, and is 6-3/8" in
>>>> diameter. I think they are relatively common, but if more
>>>> information about it is necessary, I can pass that along. I do
>>>> have audio training, and was even a member of ARSC, until I gave up
>>>> trying to find related audio work. In any case, I have little
>>>> experience with records beyond my father showing me how to clean
>>>> and play 33s. If someone could answer some questions so I can get
>>>> as good of playback as I can, I would appreciate it.
>>>>
>>>> First, I do not know what speed this record should be played at.
>>>> At first, I thought 78 RPM, but I am not sure. All I know is that
>>>> it would fit the center spindle on the turntable I have without the
>>>> included 45 RPM adapter. Can anyone verify?
>>>>
>>>> Also, it likely needs some cleaning. I still have some cleaner for
>>>> use with vinyl, but since this is acetate, I want to be 100%
>>>> certain it is safe. If a cleaner is safe for vinyl, does that
>>>> necessarily mean it is safe for use with acetate?
>>>>
>>>> Additionally, I know enough about older recordings to know that
>>>> numerous equalization curves have been implemented throughout the
>>>> history of the record. Will I need to apply one to get proper
>>>> playback? Also, I am familiar with the RIAA equalization that
>>>> eventually became standard, but since this recording was made in
>>>> the mid-1940s, that should not be used, correct?
>>>>
>>>> Finally, I noticed that there are two holes in the disc. One
>>>> obviously aligns with the center spindle on a turntable, but the
>>>> other is off-centered. My best, though naive, guess is that it is
>>>> for another spindle that was located on a platter on turntables
>>>> that did not have a disc stabilizer. Am I correct? Maybe I should
>>>> be asking, how far off is my guess?
>>>>
>>>> I would also like to apologize for posting to the list as a
>>>> non-ARSC member. Since I was unable to find audio work, or even
>>>> work in the IT field, where I have my most recent training, I could
>>>> not justify spending the money to continue my membership.
>>>>
>>>> Ivan Kawaler
>>>
>
>
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