[78-L] Groove spacing - groove width

[David Lennick]

Chewed, probably.
dl


On 11/20/2016 12:04 PM, jim brannen wrote:
> Never thought of that since I have always played them on modern equipment. Now it makes me wonder what they sounded like on players of that time.
>
>      On Sunday, November 20, 2016 11:50 AM, David Lennick <dlennick at sympatico.ca.invalid> wrote:
>   
>
>   
> That was the case..the recordings were too good for the playback systems in use
> at the time. Wide range recording lived on in transcription libraries like
> Associated (Muzak).
>
> dl
>
>
> On 11/20/2016 11:41 AM, jim brannen wrote:
>> Over the years, I have found some American Victors 78s recorded in 1932 that Ă‚ have a very full sound range compared to Victors made before and even for years after. Does anyone know if Victor was trying to produce a fuller frequency range, but then abandon it for some reason. Perhaps cost? Jimmy B
>>
>> Â  Â  Â  On Sunday, November 20, 2016 11:04 AM, Ron <roscoer at verizon.net.invalid> wrote:
>> Â
>>
>> Â
>> Hello;
>> I can't agree with Kristjan's choice of "a large table for different record
>> companies".Ă‚Â  I only see a few record companies listed, it's mostly by
>> country; and there were literally hundreds of 78 recording equalizations.
>> However, this link www.esotericsound.com/Electronics/REQ2MAN.pdf gives you
>> access to the most comprehensive listing of recording curves for both 78 and
>> 33 rpm discs.Ă‚Â  There are FIVE pages of playback curve equalizations.
>> Incidentally, this chart shows that RCA didn't begin to change its turnover
>> frequency upwards until around 1935-38 [the chart shows RIAA turnover for
>> those years, and RIAA turnover is 500 Hz.Ă‚Â  [The table is found starting on
>> page 6 of this Operating Manual.]
>>
>> Ron Roscoe
>>
>> -----Original Message-----
>> From: 78-l-bounces at klickitat.78online.com
>> [mailto:78-l-bounces at klickitat.78online.com] On Behalf Of Kristjan Saag
>> Sent: Saturday, November 19, 2016 7:02 PM
>> To: 78-L Mail List
>> Subject: Re: [78-L] Groove spacing - groove width
>>
>>
>> Thanks, all, for interesting information. Seems the switch to electric
>> recording had little effect on groove width.
>>
>> As for playback EQ curves, here is a link to a website that deals a lot with
>> this, including a large table for different record companies.
>> http://wiki.audacityteam.org/wiki/78rpm_playback_curves#Table_of_EQ_Curves
>>
>> I'm sure some of you have seen it; I may even have gotten the link from this
>> list.
>> As for reliability of its content I have no clue.
>> Kristjan
>>
>> On 2016-11-19 22:58, Royal Pemberton wrote:
>>> Those very first Stokowski Victors have bass going down to roughly
>>> 70-80 Hz due to his using string basses on the recordings. They didn't
>>> do that on later recordings most likely because they didn't work out
>>> they'd recorded at all, as whatever they auditioned test pressing on
>>> cut off at more like 200 Hz. I wonder what people thought the first
>>> time they heard one of those first Stokowski acoustics years later on
>>> Orthophonic acoustic or electric machines.... On Sat, Nov 19, 2016 at
>>> 9:35 PM, Ron L'Herault <lherault at verizon.net.invalid
>>>> wrote:
>>>> I suspect that since acoustics didn't have much bass, whatever
>>>> improvement that came via Orthophonic playback was considered
>>>> phenomenal. Ron L -----Original Message----- From: Ron
>>>> [mailto:roscoer at verizon.net] Sent: Saturday, November 19, 2016 10:18
>>>> AM To: '78-L Mail List' Cc: MOCAPS-L at yahoogroups.com Subject: RE:
>>>> [78-L] Groove spacing - groove width Weren't the first Vitaphone
>>>> movie discs issued in 1926? I believe the first Vitaphone movies were
>>>> shorts, but that in 1926 "Don Juan" was a silent film issued with a
>>>> Vitaphone sound track comprised only of music and sound effects, no
>>>> dialogue. Also, if some sort of low frequency attenuation wasn't
>>>> used, then the amplitudes of low frequencies would have required
>>>> their attenuation to keep the groove spacing down. I believe that
>>>> they saw their options in 1925 as either 1. attenuate the bass or 2.
>>>> provide a constantly wide groove that would have accommodated the
>>>> lowest frequency on the new Orthophonic records [50 Hz]. The constant
>>>> wide groove would have required a 12" diameter disc to hold what was
>>>> previously held on a 10" acoustic disc. So the attenuation won out. I
>>>> personally have been very amazed that no corresponding bass boost on
>>>> playback was ever provided in the earliest electrical playback
>>>> equipment such as the Victrola 10-51 electrically amplified record
>>>> changer. _______________________________________________ 78-L mailing
>>>> list 78-L at klickitat.78online.com
>>>> http://klickitat.78online.com/mailman/listinfo/78-l
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