Comments for page: RCA Dynagroove

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Posted by Steve W. May 18, 2012 - 11:37 pm
Steve -- informative article on Dynagroove. Thanks. I Googled the term while digitizing an old Dynagoove recording of trumpeter Al Hirt (Sugar Lips) that I recently bought at a thrift store. I had a mono version of the album as a teenager, and even then to my untrained ear and on fairly good (conical?) playback equipment of the '60s, I could hear something a little odd in some passages. Listening now, I consider it a bright recording, though not out of line with the genre. Interestingly, the trumpet is rich in high frequency content, particularly so in the triple forte of Hirt's high notes. In some passages, this results in a slightly objectionable quality to the instrument. All that said, the overall presentation of the tracks seems less obnoxious than many current CD productions.

Posted by Steve L. May 19, 2012 - 07:32 am
Hi Flavio, Thank you for your kind comments. Yes, I think Dynagroove has been unfairly treated in some circles. I hope for a more balanced view of the technology. Steve

Posted by Flavio81 from vinylengine July 24, 2011 - 11:50 pm
Steve, magnific resume of this technology, which, as many things, have been unfairly downrated by the audiophile community.

Posted by Steve L. September 14, 2010 - 02:22 pm
Thank you very much for your comments, Mr. Rafael. It is interesting to hear about an actual experience comparing spherical and elliptical stylii with Dynagroove LPs. For those (like me) who cannot read Spanish, here is a translation (courtesy of Google). I have attempted to clean up the machine translation issues:

I use elliptical needles, Except with RCA Victor DYNAGROOVE LPs, as these are designed to be played exclusively with spherical needles. Otherwise, with an elliptical needle more closely following the inner groove, a change in compensation becomes audible as the disc moves into the critical zone.

By using the sphere of the Dynagroove needle, the result is excellent. Unfortunately, most of the RCA Victor recordings in the early 60s were made with this system (including classical music), in the end, what it does is distort the sound when playing with high quality needles.

I think that was the only problem with Dynagroove.

Rafael, Aguilar E.
Panama, Rep. of Panama.

Posted by Rafael Aguilar E. September 14, 2010 - 02:01 pm
Yo uso agujas elípticas, Excepto en los LP RCA Victor DYNAGROOVE, pues éstos están diseñados para tocarse exclusivamente con agujas esféricas. De lo contrario, la aguja elíptica, al ser reproducir con mayor fidelidad los inner groove, hace audible el cambio de ecualización a medida que avanza sobre el disco hasta llegar a la zona crítica.
Al usar la aguja esférica en los Dynagroove, el resultado es excelente. Lastimosamente, la mayoría de las grabaciones de la RCA Victor en la década de los 60s fueron hechas con ese sistema (incluyendo música clásica), que al final lo que hace es distorcionar el sonido cuando se reproduce con agujas de máxima calidad.
Creo que ese fue el único error de Dynagroove.

Rafael Aguilar E.
Panamá, Rep. de Panamá.

Posted by Steve L. February 13, 2010 - 08:10 pm
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