Do you still listen to 78rpm shellacs? - diyAudio
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Old 17th March 2008, 08:24 PM   #1
bulgin is offline bulgin  South Africa
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Default Do you still listen to 78rpm shellacs?

Hi all

I still keep a sizeable collection of 78rpm shellac records and besides the usual Carusos, Giglis et al, I have ol' Al Jolson, Dinah Shore, Elvis Pressly and many other interesting recordings.

I've played them off and on for years and even diy'ed a Micro Seiki MB-18 for this speed.

I recently bought a 50's Garrard TPA12 arm and must say, I bought it only for the Garrard cream colour...

It was dirty and corroded and of course wired for mono and came fitted with a custom cream Shure Headshell.

Getting into the swing of things after refurbishing the arm, I thought, well go the whole hog, ya know the SPU look.

I had a 3-pin brown bakelite 'shell bought new with a new ceramic cart fitted.

Over the weekend, I turned an extra cart pin for it and made up a new 78rpm stylus in sapphire which I fitted to another nos Shure SC35C broadcast cart.

The hard part was making another mini armboard for the Garrard as I decided to run it with two arms.

Anyway, the job got done and here's the result

bulgin
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Old 17th March 2008, 09:09 PM   #2
EC8010 is offline EC8010  United Kingdom
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Gosh, I remember an arm like that school! You really need some mass for that 301, though. I made my plinth from a sandwich of MDF and lead flashing, used a planer to get the edges flat, then covered it with black Formica.

I like your wooden "Dustbug."
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Old 17th March 2008, 09:15 PM   #3
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Wow, nice work, you guys are making me very 78 envious. I've got my own project in the works to piece together 2 Duals, but I don't have even near the nice collection of 78's you are describing. BTW, what to do with one of those flip over style headshells (33/45 on one side, 78 on the other)?
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Old 17th March 2008, 11:21 PM   #4
bulgin is offline bulgin  South Africa
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Default Do you still listen to...

Hello EC

@ Leadbelly

The plinthless one is often transported hence no plinth but I will get round to doing a plinth for it. Nice arm you have there. Is it a Schroeder diy?

The copy 'bug has been made by a friend of mine.

@ Leadbelly, here's a pic of my Dual 1215 which plays 78's too.

I have a number of brandnew ceramic carts and perhaps someone here will explain how to rig them for playing in a modern setup.

Cheers

bulgin
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Old 17th March 2008, 11:41 PM   #5
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Yep, I spin shellac all the time. I was playing some swing era, and dixieland jazz 78s last night as a metter of fact.

I use a garrard 4HF table, and it has a built in arm that is very very similar to yours. I am still using the original Garrard headshell. Other than being a bit difficult to fit modern cartridges, I really like the look of them.

I am using various carts (I have multiple headshells) but I am getting the best sound from magnetic carts on modern 78s. What ceramic carts do you use?
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Old 18th March 2008, 08:48 PM   #6
EC8010 is offline EC8010  United Kingdom
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Default Re: Do you still listen to...

Quote:
Originally posted by bulgin
The plinthless one is often transported hence no plinth but I will get round to doing a plinth for it. Nice arm you have there. Is it a Schroeder diy?
Ah, yes, a 301 on a proper plinth is a transport nightmare. The arm is a unipivot to my own design.

Unipivot pick-up arm

I'm very impressed by Frank Schroeder's arm design.

Edit: I have some data regarding 78 equalisation time constants if people are interested, but I'd need to convert it from Word Perfect and find the articles that gave the clues.
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Old 25th March 2008, 01:59 AM   #7
bulgin is offline bulgin  South Africa
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Default Do you still listen to...

Hi EC8010

Here's my EQ solution

Cheers

bulgin
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Old 25th March 2008, 08:28 PM   #8
EC8010 is offline EC8010  United Kingdom
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Hello Bulgin, you might want to consider something a little more customised. When I was looking at standards for LP before RIAA was standardised, there were an awful lot of different equalisations, so I imagine 78s are the same.
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Old 6th April 2008, 09:15 PM   #9
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Well as it is Sunday I had quite a bit of time to work on my Dual 1214 project and it's coming along quite well! When all is said and done it actually might be a better TT for LP's than the cheapo JVC I use now

Quote:
Originally posted by EC8010
Hello Bulgin, you might want to consider something a little more customised. When I was looking at standards for LP before RIAA was standardised, there were an awful lot of different equalisations, so I imagine 78s are the same.
EC, what do you recommend as a minimum for 78 eq's? For background, I have a modest collection of 78's from my dad. All would be from the 50's, and all would be either North American or European in origin.
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Old 7th April 2008, 05:43 PM   #10
EC8010 is offline EC8010  United Kingdom
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I didn't do as much looking around for 78 time constants, but Quad suggested:

Standard 636
Decca ffrr 636 25
AES 400 63.6
Pre-54 DG 450 50
BBC 450 25
International 450 50

All of which is a long way away from 318, 75 as used for LP. If you were to use split equalisation, you could use a three position (centre off) toggle switch to add in small capacitors to the 400 setting to give 450 or 636. The same technique could be used to modify 25 to 50 or 63.6. Of course, I'm assuming you're using a dedicated stage, rather than modifying your RIAA. After all, you need a different stylus and a different speed, so it's certainly a different arm/cartridge, and probably a different turntable... Oh, and it's mono.
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