[78-L] Colored vinyl records

[Michael Biel]

From: David Lennick <dlennick at sympatico.ca>
> [The 8 inch Langworth records] also play much better with a 1-mil stylus,
> and that includes the ones that are apparently standard groove (later
> ones specified microgroove). Too much inner groove distortion otherwise.
> You'd be surprised how clean some of them sound with the smaller tip.

The sleeves and the catalog noted they could be played with either the
ET or Microgroove styli because the grooves were V-shaped.  Weren't all
grooves V-shaped?  NO!  When a stamper or metal negative is polished it
removes the bottom of the groove.  Also, the shape of many cutting styli
is chisel shaped rather than V, so the groove floor is often not too
much lower than the location where the playback stylus sits.  It is one
of the reasons why truncated styli often work well.  

Mike Biel  mbiel at mbiel.com  


-------- Original Message --------
Subject: Re: [78-L] Colored vinyl records
Michael Biel wrote:
> Robert M. Bratcher Jr. wrote:
>>> The 8 inch Langworth records with 2 songs per side were done in
>>> blue vinyl
>
> Quite right. We were still using them for novelty shows when I was at
> Temple University in the mid-60s and they were thick enough not have
> their slight transparency create any cueing problems.