Title: RCA recording techniques
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Steve_OGO
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(Date Posted:04/17/2012 08:04)

Every time I study an LP cover I seem to find something that stirs up a question.

Through a screw up of my own ,   I recently got a second copy of the Readers Digest box set  Joyous Music of Christmas Time,   the US release version with the Blue Cover with the Gold Cherub  1963,   there is also a Canadian version which I thought I was getting with the same music but different cover 4 cartoon type singers around a lamppost.

Anyway   the one I have  is an RCA   release  with the Readers Digest ID of RD 22K   for the set.
The new one I got is RD 45M,  other than a difference in the style of the box ,  they are the same music except for one thing.

My original set says on the cover   RCA Dynagroove,   while this newer acquisition  says   New Cyclophonic Miracle Sound Recording.

So What is the difference in the recording technique.  I have read up on Dynagroove on the internet , but the Cyclophonic has me mystified.  I have yet to do an ear to ear listen to see if I can hear a difference,  my gut tells me that due to  the vagueries of long term wear on preowned LPs  I will never be sure.
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Steve
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Christmas Music Guru
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RE:RCA recording techniques
(Date Posted:04/17/2012 13:22)


Steve,

The term Dynagroove and Cyclophonic are one and the same. RCA Records generally used the term Dynagroove for their releases, but for some of the exclusive LPs they manufactured for Reader's Digest they used the exclusive term Cyclophonic. It was just a marketing ploy, plain and simple.

By the way,
there were many crafty marketing terms that the record companies used over the years to promote their LPs. The terms had different meanings for different processes. Some of these terms had technical merit, and some of them did not and were just for show. Among the many terms that were used over the years were Dynagroove, Dynaflex and Cyclophonic (RCA Records), Duophonic (Capitol Records) and Phase 4 (London Records).



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Steve_OGO
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RE:RCA recording techniques
(Date Posted:04/18/2012 15:07)

Interesting!

In this case they changed the "name"  even though both LPs  were box sets by Readers Digest and exactly the same song tracks, cover etc.   Those sneaky guys.  When I dig for LPs on the internet,   I tended to find the cyclophonic   trade name  used more on LP Box sets that I found on EBAY from the UK ,  Australia  and the like.
Thats not an absolute,   just a trend that I saw.

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Steve
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johnnyelectron
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RE:RCA recording techniques
(Date Posted:04/22/2012 21:45)

My experience has been that RCA's 'Dynagroove' have been a POS; recorded at such a low level the noise floor of the LP is higher, and the vinyl itself is very flexible (recycled vinyl?)

Now the 'Stereo 360' and late 50's RCA Stereo LP's were really decent in comparison.

 

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