If you are bringing the signal from the cartridge to your computer in
stereo, combine the signals in your computer program with the phase
reversed in ONE of the two channels. There should be some way to toggle
that choice. If you are combining them to mono before the computer,
follow Dan Nelson's advice. There is another factor when playing
vertical discs -- is the groove a needle-type or a sapphire-ball type.
The books I just looked at do not mention which. If it is a
sapphire-ball type, you might need a wider stylus such as the 4 mil
truncated or even wider. Anybody else have one of these. Supposedly
they are all of Henry Burr hymn on one side and a Hymn Talk on the other.
Mike Biel [log in to unmask]
Dan Nelson wrote:
> First question!!!
> Are you playing the disc as if was a lateral recording ? You need to modify the cartridge connections to play vertical recordings.
> If you have not modified the connections then you must do that before you think about stylus.
> I have played vertical recordings withe .7 mil lp stylus, 2.5 mil tuncated and 4 mil truncated depending which gave the best reproduction.
> To modify your cartridge connections (put the two coils in series) use the left ground as ground. Use right + lead as the output lead. connect the L+ and the R- together/in series. This will give you a mono vertical output to your computer.
> Hope this helps
> --- On Fri, 9/26/08, Eric Hollis <[log in to unmask]> wrote:
>> From: Eric Hollis <[log in to unmask]>
>> Subject: [ARSCLIST] Advice needed on how to restore an old acoustic recording
>> To: [log in to unmask]
>> Date: Friday, September 26, 2008, 1:57 PM
>> Hi. I'm an amateur at sound restoration. I don't do
>> it as a profession,
>> just as a hobby that I really enjoy.
>> I purchased a Rek-O-Kut CVS-16 turntable that will play up
>> to 16" discs, a
>> Stanton 500 cartrige and two styli (2.75TC, 3.0E). I
>> transfer everything
>> thru a flat phono preamp, and do all the restoration and EQ
>> in my software,
>> I'm trying to restore a recording from 1916. It's
>> on the Angelophone
>> label. It is a vertical recording, seven inch, speech
>> only. I have
>> several copies of the recording, but I think they've
>> all been damaged to
>> one extent or another. I've tried playing them with a
>> 2.75 TC diamond and
>> a 3.0 E. The surface noise is quite pronounced. I
>> attached an mp3 of a
>> very short segment of the recording to let you see what
>> I'm up against.
>> I don't have a microscope, and I don't want to
>> continue buying styli until
>> I get the right one.
>> My question: Would anyone on the list be willing to look at
>> and make a
>> recommendation on the proper stylus to play these
>> recordings? I'm in New
>> York, and I'd be willing to send the recording to
>> someone for evaluation
>> and recommendation on what type stylus I should use. I
>> know it's a long
>> shot, but I'd really like to do a good job restoring
>> these recordings. If
>> anyone has any suggestions for a humble newbie, I'm
>> Thanks for considering.
>> Eric Hollis